Drive Parameters WESTERN DIGITAL CORPORATION This file contains all Western Digital hard drive parameters, starting with older models to the latest Enhanced IDE Caviar family. Abbreviations: Cap: Capacity, Cyl: Cylinders, Hd: Heads, WPC: Write precompensation, LZone: Landing zone, spt: Sectors per track Model Cap Cyl WPC Hd LZone Access spt Total ----- --- --- --- -- ----- ------ --- ----- MFM WD262 20 615 615 4 615 80 17 N/A WD362 20 615 615 4 615 80 17 N/A Model Cap Cyl WPC Hd LZone Access spt Total ----- --- --- --- -- ----- ------ --- ----- RLL TM262R 20 782 783 4 783 85 26 N/A TM364 40 782 783 4 783 85 26 N/A WD344R 40 782 783 4 783 40 26 N/A WD382R 20 782 783 2 783 85 26 N/A WD383R 30 616 616 4 616 85 26 N/A WD384R 40 782 783 4 783 85 26 N/A WD544R 40 782 783 4 783 40 26 N/A WD582R 20 782 783 2 783 85 26 N/A WD583R 30 615 616 4 616 85 26 N/A WD584R 40 782 783 4 783 85 26 N/A Model Cap Cyl WPC Hd LZone Access spt Total ----- --- --- --- -- ----- ------ --- ----- XT WD-93028-X 21.4 615 615 4 616 70 17 41820 WD-93038-X 32.1 615 615 6 616 70 17 62730 WD-93048-X 42.5 977 977 5 978 70 17 83045 WD-93024-X 21.4 615 615 4 616 39 17 41820 WD-93034-X 32.1 615 615 6 616 39 17 62790 WD-93044-X 42.5 977 977 5 978 39 17 83045 WD-95028-X 21.4 615 615 4 616 70 17 41820 WD-95038-X 32.1 615 615 6 616 70 17 62730 WD-95048-X 42.5 977 977 5 978 70 17 83045 WD-95024-X 21.4 615 615 4 616 39 17 41820 WD-95034-X 32.1 615 615 6 616 39 17 62730 WD-95044-X 42.5 977 977 5 978 39 17 83045 Model Cap Cyl WPC Hd LZone Access spt Total ----- --- --- --- -- ----- ------ --- ----- AT WD-93028-A 21.4 615 615 4 616 69 17 41820 WD-93048-A 42.5 977 977 5 978 69 17 83045 WD-95028-A 21.4 615 615 4 616 69 17 41820 WD-95048-A 42.5 977 977 5 978 69 17 83045 WD-93028-AD 21.4 615 615 4 616 69 17 41820 WD-93048-AD 42.5 977 977 5 978 69 17 83045 WD-95028-AD 21.4 615 615 4 616 69 17 41820 WD-95048-AD 42.5 977 977 5 978 69 17 83045 WD-93024-A 21.4 615 615 4 616 28 17 41820 WD-93044-A 42.5 977 977 5 978 28 17 83045 WD-95024-A 21.4 615 615 4 616 28 17 41820 WD-95044-A 42.5 977 977 5 978 28 17 83045 WDAP4200 212.2 987 988 12 988 SUB-15 35 414540 Model Cap Cyl WPC Hd LZone Access spt Total ----- --- --- --- --- ----- ------ --- ----- SCSI WDSP4200 209.7 1280 N/A 8 N/A SUB-15 41 N/A WDSC8320 320 949 N/A N/A N/A 12.5 48 N/A WDSC8400 400 1199 N/A N/A N/A 11.5 48 N/A Model Cap Cyl Hd WPC LZone Access spt Total ----- --- --- -- --- ----- ------ --- ----- Caviar WDAC140 42.6 980 5 980 980 SUB-15 17 83314 WDAC160 62.5 1024 7 1024 1024 SUB-17 17 122265 WDAC280 85.3 980 10 980 980 SUB-15 17 166628 WDAC1170 170.6 1010 6 1010 1010 SUB-17 55 333300 WDAC2120 125 872 8 872 872 SUB-15 35 244530 WDAC2170 170.6 1010 6 1010 1010 SUB-14 55 333568 WDAC2200 212.6 989 12 989 989 SUB-15 35 415408 WDAC1210 212.6 989 12 989 989 SUB-13 35 414540 WDAC2250 256 1010 9 1010 1010 SUB-13 55 499950 WDAC1270 270 917 12 917 917 SUB-11 48 528192 WDAC2340 341.3 1010 12 1010 1010 SUB-13 55 666600 WDAC1365 365.4 708 16 708 708 SUB-12 63 713664 WDAC2425 425.3 989 15 989 989 SUB-12 56 830760 WDAC1425 426.8 827 16 827 827 SUB-12 63 833616 WDAC2540 540.8 1048 16 1048 1048 SUB-12 63 1056384 WDAC2635 639.9 1240 16 1240 1240 SUB-11 63 1249920 WDAC2700 730.3 1416 16 1416 1416 SUB-11 63 1427328 WDAC2850 853.2 1654 16 1654 1654 SUB-11 63 1667232 WDAC21000 1083.3 2100 16 2100 2100 SUB-11 63 2116800 WDAC31000 1083.3 2100 16 2100 2100 SUB-11 63 2116800 WDAC21200 1203.2 2484 16 2484 2484 SUB-12 63 2503872 WDAC31200 1203.2 2484 16 2484 2484 SUB-12 63 2503872 WDAC21600 1624.6 3148 16 3148 3148 SUB-12 63 3173184 WDAC31600 1624.6 3148 16 3148 3148 SUB-12 63 3173184 WDAC32100 2134.5 4092 16 4092 4092 SUB-12 63 4169088 WDAC32500 2559.8 4960 16 4960 4960 SUB-12 63 4999680 Model Cap Cyl Hd WPC LZone Access spt Total ----- --- --- -- --- ----- ------ --- ----- Caviar Lite WDAL180 85 980 10 980 980 SUB-16 17 166600 WDAL1100 100 958 6 958 958 SUB-17 34 195432 WDAL2120 120 1001 15 1001 1001 SUB-16 17 255255 WDAL2170 170 980 10 980 980 SUB-16 34 333200 WDAL2200 200.1 958 12 958 958 SUB-17 34 390864 WDAL2540 540.8104816 1048 1048 SUB-13 63 1056384 Model Cap Cyl Hd WPC LZone Access spt Total ----- --- --- -- --- ----- ------ --- ----- Tidbit WDAB130 31.9 733 5 733 733 SUB-16 17 62475 WDAH260 63.2 1024 7 1024 1024 SUB-16 17 123546 WDAB140 42.7 980 5 980 980 SUB-16 17 83564 WDAH280 85.5 980 10 980 980 SUB-16 17 167130 --- Last updated April-30-96