旼 RADIO FREQUENCY INTERFERENCE STATEMENT 커 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸  FCC NOTICE  This Western Digital product has been verified to comply with the limits for a Class B computing device pursuant to subpart B Part 15 of FCC rules. This does not guarantee that interference will not occur in individual installations. Western Digital is not responsible for any television, radio, or other interference caused by unauthorized modifications of this product. If interference problems do occur, please consult the system equipment owner's manual for suggestions. Some of these suggestions include relocation of the computer system away from the television or radio, or placing the computer AC power connection on a different circuit or outlet.  CSA NOTICE  Le pr굎ent appareil num굍ique n'굆et pas de bruits radio굃ectriques d굋assant les limites applicables aux appareils num굍iques de la classe B pr굎crites dans le R둮lement sur le brouillage radio굃ectrique 괺ict� par le minist둹e des Communications du Canada. This digital apparatus does not exceed the Class B limits for radio noise for digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Western Digital Corporation 8105 Irvine Center Drive Irvine, California 92718 (714) 932-4900 Information furnished by Western Digital Corporation is believed to be accurate and reliable. However, no responsibility is assumed by Western Digital Corporation for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Western Digital Corporation. Western Digital Corporation reserves the right to change specifications at any time without notice. Copyright (c) 1992 Western Digital Corporation. All rights reserved. Western Digital is a registered trademark and Caviar, FIT Lab, Hyperseek, and Interarchitecture are trademarks of Western Digital Corporation. Other marks may be mentioned herein that belong to other companies. 9/92 � Caviar(TM) Series � WDAC280 / WDAC2120 / WDAC1170 � WDAC2170 / WDAC2200 / WDAC2250 / WDAC2340 � 80, 120, 170, 200, 250 and 340 Megabyte � 3.5-Inch Disk Drives  IF YOU NEED HELP  If you need additional information or help during installation or normal use of this product, contact Western Digital Technical Support at (714) 932-4900, or access the Technical Support Bulletin Board if you have a modem. To access the bulletin board you need a Hayes-compatible modem, 1200 or 2400 Baud rate, and the following format: 8 data bits, 1 stop bit, and no parity. The Technical Support Bulletin Board number is (714) 753-1234. The Bulletin Board asks some preliminary questions about your modem setup and the type of system you are calling from before the main bulletin board menu is displayed. Refer to your modem manual for instructions on proper modem setup. Western Digital also offers related documentation for those users who require more detailed information. The Technical Reference Manual for the Caviar Drives provides complete specifications and technical information. Contact Western Digital Literature Distribution Department at (714) 932-4900 to obtain a copy of the Technical Reference Manual. � For the Caviar AC280 (80 Mbyte capacity), order part #S0475. � For the Caviar AC2120 (120 Mbyte capacity) order part #S0477. � For the Caviar AC2170 (170 Mbyte capacity) order part #S0489. � For the Caviar AC2200 (200 Mbyte capacity), order part #S0837. � For the Caviar AC1170 (170 Mbyte), AC2250 (250 Mbyte), and AC2340 (340 Mbyte capacity), order part #S0839. 旼 INTRODUCTION 커 읕컴컴컴컴컴컴컴켸  OVERVIEW  The Western Digital Caviar(TM) intelligent disk drives are available in 80, 120, 170 (single or dual disks), 200, 250, and 340 megabyte capacities. These drives are suitable as new, upgrade, or replacement drives for installation in your IBM PC/AT or compatible system. The Caviar hard drive is an intelligent drive, which means that the hard disk has the controller circuitry and 40-pin IDE connector attached directly to the drive. It does not require a separate controller card if your system provides a 40-pin IDE connector on the motherboard. Because of its compact size (1-inch height), the Caviar drive is easily incorporated into the newest generation of small desktop and transportable PC/AT systems. The Caviar hard disk is a 3.5-inch drive that can also be used in a 5.25-inch drive bay with a 5.25-inch frame available from your dealer. With a 1:1 interleave and an average seek time of less than 17 ms (15 ms for the Caviar AC2120; 14 ms for the Caviar AC2170 and AC2200; 13 ms for the Caviar AC1170, AC2250 and AC2340), the Caviar is designed for high-speed, AT-compatible systems (80286, 80386SX, 80386, 80486SX, and 80486). YOUR INTELLIGENT DRIVE IS LOW-LEVEL FORMATTED AND DEFECT FREE. You can use your Caviar drive with Disk Operating System (DOS) version 3.0 or later. It is also compatible with other operating systems such as OS/2, Xenix, Novell Netware, UNIX, and with applications such as Windows and DESQVIEW. The Caviar contains an automatic disk head parking feature that parks the disk drive heads in a safe, non-data area when the system power is turned off. This allows you to move the computer system without damaging the hard disk media. For more technical information and specifications on the Caviar intelligent disk drive, refer to the REFERENCE section of this manual.  INSTALLATION OPTIONS  There are a number of installation options depending on your current system components and configuration. � If your system has a 40-pin IDE (Intelligent Drive Electronics) connector on the motherboard, the Caviar drive is cabled directly to the motherboard. � If your system does not have a 40-pin IDE connector on the mother- board, you must install an AT bus to IDE adapter card and connect the hard drive to the connector on the adapter card. � If you are installing the Caviar drive as your second IDE hard drive (dual installation), the hard drives must be daisy-chained together using a daisy-chain cable. One connector attaches to the adapter card or motherboard, and the other two attach to the drives. The Caviar drive is not compatible with non-intelligent drives using a standard AT controller. For example, if you have an ST-506 or ESDI drive, you must remove it and the AT controller card before installing the Caviar drive.  UNPACKING AND HANDLING PRECAUTIONS  Western Digital products are designed to withstand normal handling during unpacking and installation. Be aware of the following precautions when unpacking and installing the Caviar drive. � Be careful when handling the disk drive. Do not drop the drive or subject it to electrostatic shock. Doing so can permanently damage the drive and void the warranty. � Handle the intelligent drive by the ends only, and avoid touching the circuit board components. � Do not lift the intelligent drive by the faceplate or the circuit board. � Once the Caviar drive is unpacked, place the drive on an antistatic surface such as the antistatic drive bag. We recommend that you do not unpack the drive until you are ready to install it. � Retain your packing material in case you need to return the drive.  BEFORE INSTALLING THE DRIVE  CAUTION: Remember to handle the drive with care. To protect the drive components from damage and static, leave the drive in the anti- static bag until you are ready to install it into your system. Discharge static electricity by touching the metal chassis of your computer before handling the drive. Remember to handle the drive only by the sides to avoid contact with the circuit components. Be sure that you have the following items before installing the Caviar drive: � Computer system manual � DOS version 3.0 or later, or compatible operating system � Operating system manual � A screwdriver � A 40-pin host interface cable, not more than 18 inches long. There are some other items your system may require: � You may need to use a power Y-adapter if you are installing the Caviar drive as a second hard drive and you do not have two internal power connectors. This adapter can be purchased through your computer dealer. � You may need jumper shunts if you are changing the factory default jumper settings. � Some systems require drive mounting rails. Check your computer system manual to determine if drive mounting rails are required. These rails can be purchased through your computer manufacturer or dealer. � If you are installing the Caviar intelligent disk in a 5.25-inch drive bay, you need a 5.25-inch frame. This frame mounts on the drive and adapts it to the larger bay. Contact your dealer if you need to purchase this frame. � If your system does not have a 40-pin IDE connector on the motherboard, you need an IDE adapter card to connect the drive. Usually, replacing an ST-506 drive requires the use of an adapter card. 旼 INSTALLATION 커 읕컴컴컴컴컴컴컴켸  OVERVIEW  This section provides the steps necessary to prepare and install the Caviar intelligent disk drive in your computer. � Step One: Determining Your Installation Configuration � Step Two: Setting the Drive Jumpers � Step Three: Mounting the Drive  STEP ONE: DETERMINING YOUR INSTALLATION CONFIGURATION  Once you have all of the items necessary, you are ready to install the intelligent drive in your system. You may use the Caviar drive as a new disk in the computer, or as a replacement for an existing hard disk drive. There are two main installation configurations: � The drive is cabled directly to a 40-pin connector on the motherboard. � The drive is cabled to an adapter card mounted in one of the expansion card slots in the computer. Both configurations use a 40-pin host interface cable. DUAL INSTALLATION If you are using the Caviar drive as one of two IDE hard disk drives in the computer (dual installation), you may use either installation configuration. In dual installations, you must use a 40-pin host interface cable with three connectors, and daisy-chain the two drives to the motherboard or adapter card. Dual installations require a master/slave drive configuration, where one drive is designated as the primary drive (master) and the other is designated as the secondary drive (slave). The Caviar drive is compatible in dual installations with other intelligent drives that support a master/slave configuration. Be sure to determine your installation requirements, configuration, and materials before proceeding.  STEP TWO: SETTING THE DRIVE JUMPERS  The Caviar drive has a jumper block (J8) located next to the 40-pin connector on the drive. These jumpers select options on the hard drive. The Caviar drive is factory set for single drive installation. If you are installing the Caviar drive as the only intelligent drive in your system, you do not need to install any jumper shunts. In dual drive installations, jumper shunts are needed to designate which drive is master and which is slave. Refer to Figure 1 for an illustration of all jumper settings. � If you have a dual installation (two intelligent drives), you must designate one of the drives as the master and the other as the slave. The jumper pins on block J8 need to be configured for the dual installation. � For your other drive, consult its installation guide for master/slave configuration. To designate the Caviar drive as the master, place a jumper shunt on pins 5-6. To designate the Caviar drive as the slave, place a jumper shunt on pins 3-4. To install a jumper shunt on the J8 jumper pins: 1. Refer to the previous descriptions and Figure 1 to determine your configuration. 2. Carefully place the shunt over the two pins specified in Figure 1. 3. Push the shunt into place until it is flush against the base of the jumper block. NOTE: Designation of a drive as either master or slave is determined by jumper configuration, not by the order in which it is daisy- chained to the other drive. J8 5 3 1 旼컴컴컴컴컴컴컴커 � � � � � � � Single (Standard Installation) � � � � � � � 읕컴컴컴컴컴컴컴켸 6 4 2 5 3 1 旼컴컴컴컴컴컴컴커 � � � � � � � Dual (Master) � � � � � � � 읕컴컴컴컴컴컴컴켸 6 4 2 5 3 1 旼컴컴컴컴컴컴컴커 � � � � � � � Dual (Slave) � � � � � � � 읕컴컴컴컴컴컴컴켸 6 4 2 Figure 1. Jumper Settings 旼컴컴쩡컴컴컴컴컴컴컴커 � � � Jumper added � � KEY 쳐컴컴컴컴컴컴컴캑 � � � Jumper pins � 읕컴컴좔컴컴컴컴컴컴컴켸 NOTE: Pins 1 & 2 are reserved; do not jumper.  STEP THREE: MOUNTING THE DRIVE  You are now ready to install the Caviar drive. Make sure your interface cable is no longer than 18 inches. Also, if you are connecting two drives together, you need a daisy-chain cable that has three, 40-pin connectors. You may order this cable from your dealer. CAUTION: You may damage the Caviar drive if the interface cable is not connected properly. To prevent incorrect connection, use a cable that has keyed connectors. The female connector on the interface cable should have a plug in position 20. CONNECTING THE INTERFACE CABLE TO THE DRIVE 1. BE SURE TO TURN OFF SYSTEM POWER. 2. Open the computer case according to the system manual instructions. 3. Connect the 40-pin interface cable to the 40-pin connector on the Caviar hard drive. For dual installations, daisy-chain the two drives together by connecting them with a three-connector interface cable. Be sure to connect pin 1 of the cable to pin 1 of the connector. 4. Route the cable toward the motherboard or card slot area. The cable should easily route from the hard drive to the card slot area. The cable should not block any air flow paths. 5. Insert the drive halfway into the drive bay. NOTE: The LED activity light is socketed and can be removed if you wish to extend the connection to an external LED. CONNECTING THE POWER SUPPLY CABLE 1. Attach the power cable to the power connector on the hard drive. 2. If unattached, attach the other end of the power cable to the power supply in your computer. 3. Completely insert the drive into your system drive bay. INSERTING MOUNTING SCREWS 1. Mount the Caviar drive in the drive bay using four 6-32 screws (3/16 inch). Be sure to use the correct length of screw. Screws which engage the drive with more than six threads may damage the Caviar drive. CONNECTING THE INTERFACE CABLE TO THE HOST 1. If you have a 40-pin IDE connector on the motherboard, connect the other end of the interface cable to the motherboard connector. 2. If your installation requires an adapter card, install it at this time. When installation is complete, connect the end of the 40- pin interface cable to the adapter. Make sure pin 1 of the cable is connected to pin 1 on the adapter card. 3. After the interface cable is properly connected, close the computer case according to the instructions provided in your system manual and proceed to PREPARING THE CAVIAR DRIVE FOR USE. 旼 PREPARING THE CAVIAR DRIVE FOR USE 커 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 YOUR CAVIAR DRIVE HAS BEEN LOW-LEVEL FORMATTED. The hard drive is ready to set up and is defect-free. The drive must be partitioned and high-level formatted so it can accept files. This section of the Installation Guide provides guidelines for preparing your drive. Consult your operating system documentation for complete information on preparing the drive for use with your operating system. The computer system provides an initial setup utility, which you access with a series of key strokes or run from a floppy diskette. System setup procedures vary from system to system, but each setup procedure allows you to tell the system what type of hardware you are using. Follow the setup instructions in your computer system manual. 旼컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴커 � Drive � Recommended Parameters � Total Sectors Available � 팠袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴袴孤 � Caviar AC280 � 980 x 10 x 17 � 166,628 � � Caviar AC2120 � 872 x 8 x 35 � 244,308 � � Caviar AC1170 � 1010 x 6 x 55 � 333,300 � � Caviar AC2170 � 1010 x 6 x 55 � 333,568 � � Caviar AC2200 � 989 x 12 x 35 � 416,346 � � Caviar AC2250 � 1010 x 9 x 55 � 499,950 � � Caviar AC2340 � 1010 x 12 x 55 � 666,600 � 읕컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 1. Recommended Drive Parameters One step in the setup procedure asks you to specify the type of hard drive used in your system. There is no standard drive type for these Caviar drives. Some suggested drive parameters are listed on the next page. Use the setup utility to examine the available drive tables. Choose a drive type that comes as close as possible to the recommended parameters listed above. DO NOT EXCEED THE TOTAL NUMBER OF SECTORS AVAILABLE ON THE DRIVE. The Basic Input/Output System (BIOS) may request values for write precompensation and landing zone. You may input any value. The drive's controller electronics eliminate the need to specify these parameters and will ignore this information. 旼컴컴컴컴쩡컴컴컴컴컴쩡컴컴컴쩡컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴커 � Drive � Cylinders � Heads � Sectors/Track � Total Sectors � 팠袴袴袴袴妄袴袴袴袴袴妄袴袴袴妄袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 �80 Mbyte � 980 � 10 � 17 � 166,600 (85.3 Mbyte) � � � 640 � 10 � 26 � 166,400 (85.2 Mbyte) � � � 841 � 6 � 33 � 166,518 (85.3 Mbyte) � � � 980 � 5 � 34 � 166,600 (85.3 Mbyte) � � � 1024 � 9 � 17 � 156,672 (80.2 Mbyte) � 팠袴袴袴袴妄袴袴袴袴袴妄袴袴袴妄袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 �120 Mbyte� 872 � 8 � 35 � 244,160 (125.0 Mbyte)� � � 1024 � 14 � 17 � 243,712 (124.8 Mbyte)� � � 763 � 10 � 32 � 244,160 (125.0 Mbyte)� � � 842 � 10 � 29 � 244,180 (125.0 Mbyte)� 팠袴袴袴袴妄袴袴袴袴袴妄袴袴袴妄袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 �180 Mbyte� 1010 � 6 � 55 � 333,300 (170.6 Mbyte)� � � 980 � 10 � 34 � 333,200 (170.6 Mbyte)� � � 952 � 7 � 50 � 333,200 (170.6 Mbyte)� � � 807 � 7 � 59 � 333,291 (170.6 Mbyte)� 읕컴컴컴컴좔컴컴컴컴컴좔컴컴컴좔컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴켸 Table 2. Suggested Drive Parameters To calculate the number of sectors a drive type supplies, multiply the number of cylinders by the number of heads by the number of sectors on each track. For example, a drive type with 980 cylinders, 10 heads, and 17 sectors supplies 166,600 sectors (980 x 10 x 17). The table on this page and the following page shows the number of sectors for several different drive types. Cylinders, heads and sectors can be of any combination as long as the total number of sectors is not exceeded. 旼컴컴컴컴쩡컴컴컴컴컴쩡컴컴컴쩡컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴커 � Drive � Cylinders � Heads � Sectors/Track � Total Sectors � 팠袴袴袴袴妄袴袴袴袴袴妄袴袴袴妄袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 �200 Mbyte� 989 � 12 � 35 � 415,380 (212.7 Mbyte)� � � 987 � 12 � 35 � 414,540 (212.2 Mbyte)� � � 987 � 10 � 42 � 414,540 (212.2 Mbyte)� � � 882 � 10 � 47 � 414,540 (212.2 Mbyte)� � � 735 � 12 � 47 � 414,540 (212.2 Mbyte)� � � 658 � 14 � 45 � 414,540 (212.2 Mbyte)� 팠袴袴袴袴妄袴袴袴袴袴妄袴袴袴妄袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 �250 Mbyte� 1010 � 9 � 55 � 499,950 (256.0 Mbyte)� � � 1020 � 14 � 35 � 499,800 (255.9 Mbyte)� � � 980 � 15 � 34 � 499,800 (255.9 Mbyte)� � � 967 � 11 � 47 � 499,939 (256.0 Mbyte)� 팠袴袴袴袴妄袴袴袴袴袴妄袴袴袴妄袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 �340 Mbyte� 1010 � 12 � 55 � 666,600 (341.3 Mbyte)� � � 1013 � 14 � 47 � 666,554 (341.3 Mbyte)� � � 807 � 14 � 59 � 666,582 (341.3 Mbyte)� � � 952 � 14 � 50 � 666,400 (341.2 Mbyte)� 읕컴컴컴컴좔컴컴컴컴컴좔컴컴컴좔컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴켸 Table 2. Suggested Drive Parameters (Continued)  PARTITIONING THE DRIVE  You may need to partition your drive(s) to overcome certain limitations of your MS DOS version. Partitioning allows you to divide your disk into multiple partitions, which function as separate disk drives. Use the MS DOS FDISK.COM utility to display a series of menus that help you partition your hard disk for MS DOS. To partition your intelligent disk: 1. Insert your MS DOS system diskette into drive A. 2. Reboot the system by simultaneously pressing [CTRL], [ALT], and [DEL]. Make sure the MS DOS diskette with FDISK.COM (located on the diskette) is inserted in Drive A . 3. Type FDISK at the A: prompt. 4. Press the [Enter] key. 5. Follow the default options. For more information, refer to your MS DOS manual. MS DOS versions 3.3 and higher allow you to create a primary partition, create an extended partition, change the active partition, delete a partition, and display partition data. Your version of DOS determines how you can partition your disk(s). � If you have an MS DOS version earlier than 3.3, you can only address 32 megabytes maximum on your drive. You cannot partition the drive without second party software. We recommend you upgrade to MS DOS 3.3 or above. � If you have MS DOS version 3.3, DOS allows you to partition larger drives into logical disk drives with a maximum of 32 megabytes per partition. � If you are working with MS DOS version 3.31 or greater, you can partition a disk drive to the maximum size of the drive. You are not limited to 32 megabytes. � Some newer versions of DOS may automatically partition and format the drive. � Some non-Microsoft versions of DOS may allow larger partitions than those mentioned here. FDISK.COM automatically assigns drive IDs to the partitions. Refer to your operating system manual for more information on partitioning drives.  FORMATTING THE DRIVE  Just as you need to format a floppy diskette before it can accept files, you must high-level format the Caviar drive to prepare it to receive files. YOU DO NOT NEED TO PERFORM A LOW-LEVEL FORMAT. To high-level format the first logical drive (the "C" drive) to be bootable: 1. Insert the MS DOS diskette with the FORMAT.COM utility into drive A. 2. Type FORMAT C:/S at the A: prompt. (The "/S" parameter installs the operating system files needed to boot from the hard disk. It is only required for drive C.) 3. Press the [Enter] key. If you designated other drives or partitions during the FDISK.COM routine, you must format those drives as well. For example, type FORMAT D: at the A: prompt and then press [Enter]. Continue the format process until you have formatted all drives. When the formatting process is complete, copy all DOS files from the floppy onto your hard drive. For more information on formatting, refer to your operating system documentation.  BOOTING THE SYSTEM  After you have properly formatted your drive(s) and copied the operating system, you are ready to use the computer. Boot the system from the active operating system drive, usually C. Be sure to remove any diskettes from drive A before booting. To boot the system: 1. Simultaneously press [CTRL], [ALT], and [DEL]. 2. The system should respond, and the monitor should display C> after you have entered the current date and time. Refer to your system documentation for more information on booting the system. If the system will not boot, or if you are unable to access the new drive, refer to your operating system documentation. Verify that you ran the system utilities correctly, specified the correct drive tables, designated an active partition, and partitioned and formatted the hard disk correctly. If your system still won't boot, you may have improperly installed or connected the drive. Re-read the installation instructions provided in this manual to be sure that you installed and connected everything properly. Refer to the TROUBLESHOOTING section of this manual for more information.  PREPARING THE CAVIAR DRIVE FOR A NOVELL NETWORK  If you are installing Novell, and your version of Netware has COMPSURF, you must COMPSURF the Caviar drive. The following parameters are recommended: � Format the disk No � Maintain the current media defect list No � Enter media defects No � Number of sequential passes Default � Number of I/O random test Default � Are parameters correct Yes After running COMPSURF on the Caviar drive, run NETGEN. Refer to your Novell installation manual for more information on COMPSURF and Novell installation procedures.  USING THE DRIVE  It is extremely important to regularly back up the data on your hard disk. Data can be damaged or lost due to a number of unanticipated factors. Consult your operating system documentation for back-up instructions and procedures.  AUTOMATIC HEAD PARK FEATURE  The Caviar drive provides an automatic feature that parks the drive heads when the system power is turned off. No separate utilities are required to park the Caviar drive. If you move your system, be sure to turn the system power off. The drive heads are then automatically moved to a safe, non-data area, and the heads are locked into place. This helps protect the disk media and the heads from accidental damage due to vibration, moving, or shipping. 旼 TROUBLESHOOTING 커 읕컴컴컴컴컴컴컴컴컴� This section lists procedures to resolve problems you may encounter when installing the Caviar drive. � Reread the installation instructions provided in this manual to be sure that you followed the instructions correctly and included all necessary hardware. � Refer to your system documentation to be sure that you followed the setup procedures correctly. � Make sure that you partitioned and formatted the intelligent drive and any additional drive with the DOS FDISK.COM and FORMAT.COM utilities. (If you are making this disk bootable, remember to specify the /S parameter). Refer to your operating system documentation to check these procedures. � If using DOS 4.0 or DOS 5.0, be certain to make the partition active during FDISK. � Check the physical installation of your system. Make sure: - The jumper selections on the drive are correct for your installation. - The cables are correctly connected. - The adapter card, if installed, is properly seated, connected, and configured. - Power is properly connected to your system and the system is plugged in. - There is not an ST506 AT controller in the system. Another 16- bit (AT) hard disk controller cannot be used in the same system as the Caviar drive. If you have further questions or trouble, contact your dealer or Western Digital Technical Support at (714) 932-4900 or contact the Western Digital Bulletin Board at (714) 753-1234 for more information. 旼 REFERENCE 커 읕컴컴컴컴컴컴�  PHYSICAL SPECIFICATIONS  This section contains the physical and environmental specifications and requirements for the Caviar intelligent disk. NOTE: DO NOT EXCEED THE MAXIMUM SECTOR CAPACITY OF THE DRIVE WHEN SPECIFYING THE NUMBER OF CYLINDERS, HEADS AND SECTORS PER TRACK. 旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컫컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴커 쿒ENERAL 쿌C280-80Mbyte쿌C2120-120Mbyte쿌C1170-170Mbyte� 팠袴袴袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴曲袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴孤 쿑ormatted Capacity �85.3 Mbytes � 125.0 Mbytes � 170.6 Mbytes � 쿔nterface �40-pin PC/AT � 40-pin PC/AT � 40-pin PC/AT � 쿌ctuator Type 쿝otary Voice � Rotary Voice � Rotary Voice � � � Coil � Coil � Coil � 쿙umber of Disks � 2 � 2 � 1 � 쿏ata Surfaces � 4 � 4 � 2 � 쿙umber of Heads � 4 � 4 � 2 � 쿙umber of Cylinders � 1082 � 1350 � 2233 � 쿌verage Track Density � 1405 TPI � 1712 TPI � 2481 TPI � 쿑ormatted Cylinder � 78.8 Kbytes � 80.9 to 97.3 � 57.3 to 98.3 � � Capacity � � Kbytes � Kbytes � 쿍ytes per Sector � 512 � 512 � 512 � 쿢ser Sectors per Drive� 166,628 � 244,308 � 333,300 � 쿢ser Sectors per Cyl � 154 � 158 to 190 � 112 to 192 � 쿛hysical Sectors per � 39 � 40 to 48 � 56 to 96 � � Track � � � � 쿞ervo Type 쿐mbedded 쿐mbedded 쿐mbedded � � 쿞ector Servo 쿞ector Servo 쿞ector Servo � 쿝ecording Method � 2,7 RLL � 2,7 RLL � 1,7 RLL � 쿝ecording Density � 31,591 BPI � 33,465 BPI � 55,200 BPI � 쿑lux Density � 21,061 FCI � 22,310 FCI � 41,400 FCI � 쿐CC � 56-bit � 56-bit 쿝eed Solomon � 쿓ead Park 쿌utomatic 쿌utomatic 쿌utomatic � � 쿓ead Parking 쿓ead Parking 쿓ead Parking � 쿞uggested Logical � 980/10/17 � 872/8/35 � 1010/6/55 � � Parameters � � � � � Cyl/Hds/SPT � � � � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컨컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴켸 Table 3. General Specifications 旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴커 쿒ENERAL (Cont'd) � AC2170-170 Mbyte � AC2200-200 Mbyte � 팠袴袴袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 쿑ormatted Capacity � 170.6 Mbytes � 213.2 Mbytes � 쿔nterface � 40-pin PC/AT � 40-pin PC/AT � 쿌ctuator Type � Rotary Voice Coil � Rotary Voice Coil � 쿙umber of Disks � 2 � 2 � 쿏ata Surfaces � 4 � 4 � 쿙umber of Heads � 4 � 4 � 쿙umber of Cylinders � 1584 � 1971 � 쿌verage Track Density � 2400 TPI � 2400 TPI � 쿑ormatted Cylinder � 97.3 to 113.6 Kbytes � 97.3 to 113.6 Kbytes � � Capacity � � � 쿍ytes per Sector � 512 � 512 � 쿢ser Sectors per Drive� 333,568 � 416,346 � 쿢ser Sectors per Cyl � 190 to 222 � 190 to 222 � 쿛hysical Sectors per � 48 to 56 � 48 to 56 � � Track � � � 쿞ervo Type 쿐mbedded Sector Servo 쿐mbedded Sector Servo � 쿝ecording Method � 2,7 RLL � 2,7 RLL � 쿝ecording Density � 43,000 BPI � 43,000 BPI � 쿑lux Density � 28,667 FCI � 28,667 FCI � 쿐CC � 56-bit � 56-bit � 쿓ead Park 쿌utomatic Head Parking쿌utomatic Head Parking� 쿞uggested Logical � 1010/6/55 � 989/12/35 � � Parameters � � � � Cyl/Hds/SPT � � � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴켸 Table 3. General Specifications (Continued) 旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴커 쿒ENERAL (Cont'd) � AC2250-250 Mbyte � AC2340-340 Mbyte � 팠袴袴袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 쿑ormatted Capacity � 256.0 Mbytes � 341.3 Mbytes � 쿔nterface � 40-pin PC/AT � 40-pin PC/AT � 쿌ctuator Type � Rotary Voice Coil � Rotary Voice Coil � 쿙umber of Disks � 2 � 2 � 쿏ata Surfaces � 3 � 4 � 쿙umber of Heads � 3 � 4 � 쿙umber of Cylinders � 2233 � 2233 � 쿌verage Track Density � 2481 TPI � 2481 TPI � 쿑ormatted Cylinder � 86.0 to 147.5 Kbytes � 114.7 to 196.6 Kbytes� � Capacity � � � 쿍ytes per Sector � 512 � 512 � 쿢ser Sectors per Drive� 499,950 � 666,600 � 쿢ser Sectors per Cyl � 168 to 288 � 224 to 384 � 쿛hysical Sectors per � 56 to 96 � 56 to 96 � � Track � � � 쿞ervo Type 쿐mbedded Sector Servo 쿐mbedded Sector Servo � 쿝ecording Method � 1,7 RLL � 1,7 RLL � 쿝ecording Density � 55,200 BPI � 55,200 BPI � 쿑lux Density � 41,400 FCI � 41,400 FCI � 쿐CC � Reed Solomon � Reed Solomon � 쿓ead Park 쿌utomatic Head Parking쿌utomatic Head Parking� 쿞uggested Logical � 1010/9/55 � 1010/12/55 � � Parameters � � � � Cyl/Hds/SPT � � � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴켸 Table 3. General Specifications (Continued) 旼컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 쿑ORM FACTOR� ALL MODELS � �3.5 Inches � � 팠袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴佶袴袴袴袴袴佶袴袴袴袴袴袴袴袴袴袴孤 � Height �1.00 inches, �.010 � Width �4.00 inches � � Length �5.75 inches, �.010 � Weight �1.12 pounds (0.508 Kg)� 읕컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴켸 Table 3. General Specifications (Continued)  PERFORMANCE SPECIFICATIONS  旼컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴커 쿛ERFORMANCE � AC280-80Mbyte 쿌C2120-120Mbyte쿌C1170-170Mbyte� 팠袴袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴孤 쿌verage Seek Time 쿞ub-17 ms 쿞ub-15 ms 쿞ub-13 ms � 쿟rack-to-Track Seek �6 ms �6 ms �4 ms � 쿘aximum Seek �28 ms �28 ms �26 ms � 쿔ndex Pulse Period �16.67 ms �16.67 ms �18.1 ms � � � (�0.1%) � (�0.1%) � (�0.1%) � 쿌verage Latency �8.34 ms �8.34 ms �9 ms � � � (�0.1%) � (�0.1%) � (�0.1%) � 쿝otational Speed �3595 Revolu- �3605 Revolu- �3322 Revolu- � � 퀃ions/min 퀃ions/min 퀃ions/min � � �(�0.1%) �(�0.1%) �(�0.1%) � 쿎ontroller Overhead �0.3 ms average �0.3 ms average �0.3 ms average � 쿏ata Transfer Rate: � � � � � Buffer to Disk �12 Mbits/s �12 - 15 Mbits/s�17 - 30 Mbits/s� � Buffer to Host �4.5 Mbytes/s �4.5 Mbytes/s �5.75 Mbytes/s � 쿔nterleave �1:1 �1:1 �1:1 � 쿍uffer Size �32-Kbyte RAM �32-Kbyte RAM �32-Kbyte RAM � � �(8 Kbyte �(64 Kbyte �(64 Kbyte � � 쿽ptional) 쿽ptional) 쿽ptional) � 쿞pindle Start Time �5s (typical) �5s (typical) �5s (typical) � 쿞pindle Stop Time �6s (typical) �6s (typical) �6s (typical) � 쿞tart/Stop Cycles �10,000 cycles �10,000 cycles �20,000 cycles � � 쿺in 쿺in 쿺in � 쿌coustics (typical) 쿔dle at 1 meter쿔dle at 1 meter쿔dle at 1 meter� � �40 dBA, Seeking�40 dBA, Seeking�36 dBA, Seeking� � 쿪t 1 meter, 쿪t 1 meter, 쿪t 1 meter � � �42 dBA �43 dBA �42 dBA � 읕컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴켸 Table 4. Performance Specifications 旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴커 쿛ERFORMANCE (Cont'd) � AC2170-170 Mbyte � AC2200-200 Mbyte � 팠袴袴袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 쿌verage Seek Time 쿞ub-14 ms 쿞ub-14 ms � 쿟rack-to-Track Seek �5 ms �5 ms � 쿘aximum Seek �24 ms �24 ms � 쿔ndex Pulse Period �16.42 ms (�0.1%) �16.42 ms (�0.1%) � 쿌verage Latency �8.21 ms (�0.1%) �8.21 ms (�0.1%) � 쿝otational Speed �3652 Revolutions/ �3652 Revolutions/ � � 쿺in (�0.1%) 쿺in (�0.1%) � 쿎ontroller Overhead �0.3 ms average �0.3 ms average � 쿏ata Transfer Rate: � � � � Buffer to Disk �15.625 - 18.75 Mbits/s�15.625 - 18.75 Mbits/s� � Buffer to Host �5 Mbytes/s �5 Mbytes/s � 쿔nterleave �1:1 �1:1 � 쿍uffer Size �32-Kbyte RAM �64-Kbyte RAM � 쿞pindle Start Time �5s (typical) �5s (typical) � 쿞pindle Stop Time �6s (typical) �6s (typical) � 쿞tart/Stop Cycles �10,000 cycles min �10,000 cycles min � 쿌coustics (typical) 쿔dle at 1 meter,40 dBA쿔dle at 1 meter,40 dBA� � 쿞eeking at 1 meter, 쿞eeking at 1 meter, � � �43 dBA �43 dBA � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴켸 Table 4. Performance Specifications (Continued) 旼컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴커 쿛ERFORMANCE (Cont'd) � AC2250-250 Mbyte � AC2340-340 Mbyte � 팠袴袴袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴袴袴袴袴孤 쿌verage Seek Time 쿞ub-13 ms 쿞ub-13 ms � 쿟rack-to-Track Seek �4 ms �4 ms � 쿘aximum Seek �26 ms �26 ms � 쿔ndex Pulse Period �18.1 ms (�0.1%) �18.1 ms (�0.1%) � 쿌verage Latency �9 ms (�0.1%) �9 ms (�0.1%) � 쿝otational Speed �3322 Revolutions/ �3322 Revolutions/ � � 쿺in (�0.1%) 쿺in (�0.1%) � 쿎ontroller Overhead �0.3 ms average �0.3 ms average � 쿏ata Transfer Rate: � � � � Buffer to Disk �17 - 30 Mbits/s �17 - 30 Mbits/s � � Buffer to Host �5.75 Mbytes/s �5.75 Mbytes/s � 쿔nterleave �1:1 �1:1 � 쿍uffer Size �64-Kbyte RAM (128/256 �64-Kbyte RAM (128/256 � � 쿖byte optional) 쿖byte optional) � 쿞pindle Start Time �5s (typical) �5s (typical) � 쿞pindle Stop Time �6s (typical) �6s (typical) � 쿞tart/Stop Cycles �20,000 cycles min �20,000 cycles min � 쿌coustics (typical) 쿔dle at 1 meter,36 dBA쿔dle at 1 meter,36 dBA� � 쿞eeking at 1 meter, 쿞eeking at 1 meter, � � �42 dBA �42 dBA � 읕컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴켸 Table 4. Performance Specifications (Continued)  POWER SPECIFICATIONS  NOTE: FOR INFORMATION ON POWER SAVE FEATURES INCORPORATED IN YOUR CAVIAR DRIVE, PLEASE REFER TO THE TECHNICAL REFERENCE MANUAL FOR THAT DRIVE. 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � 12 VDC and 5 VDC Typical Current Draw � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � � AC280 � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴� � � Input Voltage � Power � � Operation � 12 VDC �5% 5 VDC �5% � � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴孤 쿝ead/Write � 0.35A � 0.22A � 5.30W � 쿞eek (1/3 stroke) � 0.37A � 0.22A � 5.60W � 쿞pinup � 1.08A � 0.20A � 13.96W � � � 1.40A max � 0.25A max � � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴캑 � � � � Ripple Voltage � Maximum Frequency � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴袴袴袴袴孤 �12 VDC �200 mV (peak-to-peak) �0-20 MHz � � 5 VDC �100 mV (peak-to-peak) �0-20 MHz � 쳐컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴캑 쿙OTE: Spin mode begins at zero RPM spindle speed and ends with � � normal speed. A complete spin-up operation typically � � requires five seconds. � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 5. 12 VDC and 5 VDC Typical Current Draw 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � 12 VDC and 5 VDC Typical Current Draw � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � � AC2120 � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴� � � Input Voltage � Power � � Operation � 12 VDC �5% 5 VDC �5% � � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴孤 쿝ead/Write � 0.24A � 0.30A � 4.38W � 쿞eek (1/3 stroke) � 0.28A � 0.30A � 4.86W � 쿞pinup � 0.60A � 0.30A � 8.70W � � � 0.80A max � 0.35A max � � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴캑 � � � � Ripple Voltage � Maximum Frequency � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴袴袴袴袴孤 �12 VDC �200 mV (peak-to-peak) �0-20 MHz � � 5 VDC �100 mV (peak-to-peak) �0-20 MHz � 쳐컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴캑 쿙OTE: Spin mode begins at zero RPM spindle speed and ends with � � normal speed. A complete spin-up operation typically � � requires five seconds. � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 5. 12 VDC and 5 VDC Typical Current Draw 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � 12 VDC and 5 VDC Typical Current Draw � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � � AC2170 � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴� � � Input Voltage � Power � � Operation � 12 VDC �5% 5 VDC �5% � � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴孤 쿝ead/Write � 0.31A � 0.33A � 5.37W � 쿞eek (1/3 stroke) � 0.30A � 0.33A � 5.25W � 쿞pinup � 0.88A � 0.33A � 12.21W � � � 1.1A max � 0.33A max � � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴캑 � � � � Ripple Voltage � Maximum Frequency � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴袴袴袴袴孤 �12 VDC �200 mV (peak-to-peak) �0-20 MHz � � 5 VDC �100 mV (peak-to-peak) �0-20 MHz � 쳐컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴캑 쿙OTE: Spin mode begins at zero RPM spindle speed and ends with � � normal speed. A complete spin-up operation typically � � requires five seconds. � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 5. 12 VDC and 5 VDC Typical Current Draw (Continued) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � 12 VDC and 5 VDC Typical Current Draw � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � � AC2200 � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴� � � Input Voltage � Power � � Operation � 12 VDC �5% 5 VDC �5% � � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴孤 쿝ead/Write � 0.31A � 0.33A � 5.37W � 쿞eek (1/3 stroke) � 0.30A � 0.33A � 5.25W � 쿞pinup � 0.88A � 0.33A � 12.21W � � � 01.1A max � 0.33A max � � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴캑 � � � � Ripple Voltage � Maximum Frequency � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴袴袴袴袴孤 �12 VDC �200 mV (peak-to-peak) �0-20 MHz � � 5 VDC �100 mV (peak-to-peak) �0-20 MHz � 쳐컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴캑 쿙OTE: Spin mode begins at zero RPM spindle speed and ends with � � normal speed. A complete spin-up operation typically � � requires five seconds. � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 5. 12 VDC and 5 VDC Typical current Draw (Continued) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � 12 VDC and 5 VDC Typical Current Draw � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� � � AC1170, AC2250, AC2340 � � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴� � � Input Voltage � Power � � Operation � 12 VDC �5% 5 VDC �5% � � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴孤 쿝ead/Write � 0.12A � 0.31A � 3.0W � 쿞eek (1/3 stroke) � 0.24A � 0.30A � 4.4W � 쿞pinup � 1.10A � 0.11A � 12.0W � � � 1.20A max � 0.35A max � � 쳐컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴캑 � � � � Ripple Voltage � Maximum Frequency � 팠袴袴袴袴袴袴袴袴曲袴袴袴袴袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴袴袴袴袴孤 �12 VDC �200 mV (peak-to-peak) �0-20 MHz � � 5 VDC �100 mV (peak-to-peak) �0-20 MHz � 읕컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴켸 Table 5. 12 VDC and 5 VDC Typical Current Draw (Continued) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 쿛OWER CONNECTORS AND CABLES � 팠袴袴袴袴袴袴袴袴袴袴袴佶袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴孤 쿛ower Connector � 4-pin MOLEX (P/N 15-24-4041 or equivalent) � � � 3-pin MOLEX (P/N 30-27-0032 or equivalent).� � � Factory installed option. � 쿘ating Connector � Body (AMP 1-480424-0 or equivalent) � � � Pins (AMP 60619-4 or equivalent) � 쿛ower Cable Wire Gauge � 18 AWG � 읕컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 6. Power Connectors and Cables  ENVIRONMENTAL SPECIFICATIONS  NOTE: THE SYSTEM ENVIRONMENT MUST ALLOW SUFFICIENT AIR FLOW TO MAINTAIN THE AIR TEMPERATURE ADJACENT TO THE CASTING AT OR BELOW 50�C (122�F). 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � ENVIRONMENTAL � � 旼컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴� � � AC280-80 Mbyte � AC2120-120 Mbyte� AC1170-170 Mbyte� 팠袴袴袴袴袴袴賈袴袴袴袴袴袴袴袴賈袴袴袴袴袴袴袴袴賈袴袴袴袴袴袴袴袴孤 � SHOCK � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴캑 쿚perating � 10 Gs � 10 Gs � 10 Gs � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿙on-operating � 75 Gs � 75 Gs � 70 Gs � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴캑 � VIBRATION � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴캑 쿚perating �5-20 Hz, 0.034" �5-20 Hz, 0.034" �5-21 Hz, 0.34" � � �(double ampli- �(double ampli- �(double ampli- � � 퀃ude) 20-400 Hz, 퀃ude) 20-400 Hz, 퀃ude) 21-400 Hz, � � �0.75 Gs (Peak) �0.75 Gs (Peak) �0.75 Gs (Peak) � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿙on-operating �5-20 Hz, 0.195" �5-20 Hz, 0.195" �5-21 Hz, 0.195" � � �(double ampli- �(double ampli- �(double ampli- � � 퀃ude) 20-500 Hz, 퀃ude) 20-500 Hz, 퀃ude) 21-500 Hz, � � �4 Gs (Peak) �4 Gs (Peak) �4 Gs (Peak) � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿞weep Rate 쿚ne half octave/ 쿚ne half octave/ 쿚ne half octave/ � � 쿺inute 쿺inute 쿺inute � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴캑 � TEMPERATURE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴캐 쿚perating �5�C to 50�C (41�F�5�C to 50�C (41�F�5�C to 55�C (41�F� � 퀃o 122�F); 10�C/ 퀃o 122�F); 10�C/ 퀃o 131�F); 20�C/ � � 쿴our Thermal 쿴our Thermal 쿴our Thermal � � 쿒radient 쿒radient 쿒radient � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿙on-operating �-40�C to 60�C �-40�C to 60�C �-40�C to 60�C � � �(-40�F to 140�F);�(-40�F to 140�F);�(-40�F to 140�F);� � �20�C/hour Thermal�20�C/hour Thermal�20�C/hour Thermal� � 쿒radient 쿒radient 쿒radient � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴캑 � RELATIVE HUMIDITY � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴캐 쿚perating �8% to 80% RH �8% to 80% RH �8% to 80% RH � � 쿻on-condensing 쿻on-condensing 쿻on-condensing � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿘aximum Wet �26�C (79�F) �26�C (79�F) �33�C (91�F) � 쿍ulb � � � � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿙on-operating �5% to 95% RH �5% to 95% RH �5% to 95% RH � � 쿻on-condensing 쿻on-condensing 쿻on-condensing � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿘aximum Wet �26�C (79�F) �26�C (79�F) �35�C (95�F) � 쿍ulb � � � � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴캑 � ATMOSPHERIC PRESSURE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴캐 쿚perating �-1000 to 10,000 �-1000 to 10,000 �-1000 to 10,000 � � 쿯eet 쿯eet 쿯eet � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴캑 쿙on-operating �-1000 to 40,000 �-1000 to 40,000 �-1000 to 40,000 � � 쿯eet 쿯eet 쿯eet � 읕컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴켸 Table 7. Environmental Specifications 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � ENVIRONMENTAL (CONT'D) � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴� � � AC2170-170 Mbyte � AC2200-200 Mbyte � 팠袴袴袴袴袴袴賈袴袴袴袴袴袴袴袴袴袴袴袴袴鳩袴袴袴袴袴袴袴袴袴袴袴袴孤 � SHOCK � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캑 쿚perating � 10 Gs � 10 Gs � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating � 75 Gs � 75 Gs � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � VIBRATION � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캑 쿚perating �5-20 Hz, 0.034" (double �5-20 Hz, 0.034" (double � � 쿪mplitude) 20-400 Hz, 쿪mplitude) 20-400 Hz, � � �0.75 Gs (Peak) �0.75 Gs (Peak) � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �5-20 Hz, 0.195" (double �5-20 Hz, 0.195" (double � � 쿪mplitude) 20-500 Hz, 쿪mplitude) 20-500 Hz, � � �4 Gs (Peak) �4 Gs (Peak) � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿞weep Rate 쿚ne half octave/minute 쿚ne half octave/minute � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � TEMPERATURE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 쿚perating �5�C to 50�C (41�F to �5�C to 50�C (41�F to � � �122�F); 10�C/hour Thermal �122�F); 10�C/hour Thermal � � 쿒radient 쿒radient � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �-40�C to 60�C (-40�F to �-40�C to 60�C (-40�F to � � �140�F); 20�C/hour Thermal �140�F); 20�C/hour Thermal � � 쿒radient 쿒radient � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � RELATIVE HUMIDITY � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 쿚perating �8% to 80% RH non- �8% to 80% RH non- � � 쿬ondensing 쿬ondensing � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿘aximum Wet �26�C (79�F) �26�C (79�F) � 쿍ulb � � � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �5% to 95% RH non- �5% to 95% RH non- � � 쿬ondensing 쿬ondensing � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿘aximum Wet �26�C (79�F) �26�C (79�F) � 쿍ulb � � � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � ATMOSPHERIC PRESSURE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 쿚perating �-1000 to 10,000 feet �-1000 to 10,000 feet � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �-1000 to 40,000 feet �-1000 to 40,000 feet � 읕컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 7. Environmental Specifications (Continued) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � ENVIRONMENTAL (CONT'D) � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴� � � AC2250-250 Mbyte � AC2340-340 Mbyte � 팠袴袴袴袴袴袴賈袴袴袴袴袴袴袴袴袴袴袴袴袴鳩袴袴袴袴袴袴袴袴袴袴袴袴孤 � SHOCK � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캑 쿚perating � 10 Gs � 10 Gs � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating � 70 Gs � 70 Gs � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � VIBRATION � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캑 쿚perating �5-21 Hz, 0.034" (double �5-21 Hz, 0.034" (double � � 쿪mplitude) 21-400 Hz, 쿪mplitude) 21-400 Hz, � � �0.75 Gs (Peak) �0.75 Gs (Peak) � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �5-21 Hz, 0.195" (double �5-21 Hz, 0.195" (double � � 쿪mplitude) 21-500 Hz, 쿪mplitude) 21-500 Hz, � � �4 Gs (Peak) �4 Gs (Peak) � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿞weep Rate 쿚ne half octave/minute 쿚ne half octave/minute � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � TEMPERATURE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 쿚perating �5�C to 55�C (41�F to �5�C to 55�C (41�F to � � �131�F); 20�C/hour Thermal �131�F); 20�C/hour Thermal � � 쿒radient 쿒radient � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �-40�C to 60�C (-40�F to �-40�C to 60�C (-40�F to � � �140�F); 20�C/hour Thermal �140�F); 20�C/hour Thermal � � 쿒radient 쿒radient � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � RELATIVE HUMIDITY � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 쿚perating �8% to 80% RH non- �8% to 80% RH non- � � 쿬ondensing 쿬ondensing � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿘aximum Wet �33�C (91�F) �33�C (91�F) � 쿍ulb � � � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �5% to 95% RH non- �5% to 95% RH non- � � 쿬ondensing 쿬ondensing � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿘aximum Wet �35�C (95�F) �35�C (95�F) � 쿍ulb � � � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � ATMOSPHERIC PRESSURE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 쿚perating �-1000 to 10,000 feet �-1000 to 10,000 feet � 쳐컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴캑 쿙on-operating �-1000 to 40,000 feet �-1000 to 40,000 feet � 읕컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 7. Environmental Specifications (Continued)  RELIABILITY SPECIFICATIONS  旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � RELIABILITY � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴� � 쿌C280,AC2120,AC2170,AC2200� AC1170,AC2250,AC2340 � 팠袴袴袴袴袴袴賈袴袴袴袴袴袴袴袴袴袴袴袴袴鳩袴袴袴袴袴袴袴袴袴袴袴袴孤 � MEAN TIME BETWEEN FAILURES (MTBF) � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캑 � �100,000 power-on hours �250,00 power-on hours � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � MEAN TIME TO REPAIR (MTTR) � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캑 � �10 Minutes typical �10 Minutes typical � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � COMPONENT DESIGN LIFE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 � �5 Years �5 Years � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � ERROR RATE � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 � �<1 IN 10000000000000 bits �<1 in 10000000000000 bits � � 퀁ead unrecoverable 퀁ead unrecoverable � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � WARRANTY PERIOD � 쳐컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴캐 � �2 Years �2 Years � 쳐컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴캑 � Specifications subject to change without notice � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 Table 8. Reliability Specifications  AGENCY APPROVALS  The Caviar drives meet the standards of the following regulatory agencies: Underwriters Laboratories UL-Standard 1950, for Safety, Electronic Data Processing Units and Systems. File Number - E101559 Federal Communication Commission Verified to comply with FCC Rules for Radiated and Conducted Emission, Part 15, Subpart B, for Class B Equipment Canadian Standards Association CSA-Standard C22.2, No. 950 - M89 Safety of Information Technology Equipment, Including Electrical Business Equipment. File Number LR 68850 TUV Essen Laboratories IEC 950 (EN 60 950) Standard for Information Technology and Business Equipment  OBTAINING WARRANTY AND NON-WARRANTY SERVICE  Warranty and non-warranty service is available from Western Digital. However, if this Western Digital product ever needs service, check with your dealer. You may also contact Western Digital Technical Support. No product may be returned to us without first calling Technical Support at (714) 932-4900. Technical Support will determine the cause of the product problem. If it is decided that your Western Digital product needs to be repaired or replaced, you will be given a Return Material Authorization number (RMA#) and instructions on how and where to return your product. Please include this RMA# when returning the product. No unauthorized shipments will be accepted.  LIMITED WARRANTY  WESTERN DIGITAL CORPORATION (WDC) expressly warrants, in accordance with the terms described below, that it will either repair or replace this WDC peripheral Product if it proves to be defective in design, material, or workmanship in the course of its normal use, within two (2) years from the Buyer's date of purchase from an authorized WDC dealer. For warranty repair or replacement, the defective Product must be returned within two (2) years to place of purchase or to an authorized WDC service center, either in person or by insured mail, packaged in the original container and accompanied by proof of purchase, model number, and serial number. A repaired or replacement Product shall be warranted as above for the balance of the original product Warranty Period or ninety (90) days, whichever is longest. The normal intended use of the Product is as computer peripheral equipment in accordance with the functional, environmental and operational standards published by WDC or generally accepted in the industry. WDC shall have no obligation with respect to lost data or data contained in any Product placed in its possession. WDC's liability to Buyer or anyone claiming through or on behalf of Buyer with respect to claim or loss arising out of this transaction or alleged to have resulted from an act or omission of WDC shall in no event exceed the purchase price of the Product with respect to which such liability is claimed. In no event shall WDC be liable for consequential damages, losses, or expenses arising out of this transaction. The return of the purchase price or the repair or replacement of the product shall be the buyer's sole remedy hereunder. All claims hereunder must be presented to WDC within ninety (90) days following discovery of an alleged defect in the Product. This limited warranty is WDC's sole warranty. WDC makes no other warranty of any kind whatsoever, expressed or implied. All implied warranties of merchantability and/or fitness for a particular purpose are hereby disclaimed by WDC. In the United States, some states do not allow exclusion or limitation of incidental or consequential damages, so the limitations above may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.