Western Digital Hard Drive Parameters


The following table contains the drive geometry to the complete line of hard disk drives, manufactured by Western Digital Corporation, starting with older models to the latest Enhanced IDE Caviar family.

You can download this file in Word for Windows 6.0 .DOC format or, plain text.

Abbreviations: 
		* Cap: Capacity 
		* Cyl: Cylinders
		* Hd: Heads
		* WPC: Write precompensation
		* LZone: Landing zone
		* spt: Sectors per track


MFM Hard Drives

Model Cap Cyl WPC Hd LZone Access spt Total
WD 262 20.0 615 616 4 616 80 17 N/A WD 362 20.0 615 616 4 616 80 17 N/A

RLL Hard Drives

Model Cap Cyl WPC Hd LZone Access spt Total
WD 344R 40.0 782 783 4 783 40 26 N/A WD 382R 20.0 782 783 2 783 85 26 N/A /TM262R WD 383R 30.0 615 616 4 616 85 26 N/A WD 384R 40.0 782 783 4 783 85 26 N/A /TM364 WD 544R 40.0 782 783 4 783 40 26 N/A WD 582R 20.0 782 783 2 783 85 26 N/A WD 583R 30.0 615 616 4 616 85 26 N/A WD 584R 40.0 782 783 4 783 85 26 N/A

XT Hard Disk Drives

Model Cap Cyl WPC Hd LZone Access spt Total
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

AT Hard Disk Drives

Model Cap Cyl WPC Hd LZone Access spt Total
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

SCSI Hard drives

Model Cap Cyl WPC Hd LZone Access spt Total
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

Caviar Hard Drives

Model Cap Cyl Hd WPC LZone Access spt Total
WDAC140 42.6 980 5 980 980 SUB-17 17 83314 WDAC160 62.5 1024 7 1024 1024 SUB-15 17 122265 WDAC280 85.3 980 10 980 980 SUB-17 17 166628 WDAC1170 170.6 1010 6 1010 1010 SUB-15 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-14 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 15 989 980 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 WDAC31000 1083.3 2100 16 2100 2100 SUB-10 63 2116800 WDAC31200 1203.2 2484 16 2484 2484 SUB-10 63 2503872 WDAC31600 1624.6 3148 16 3148 3148 SUB-10 63 3173184

Caviar Lite Hard Drives

Model Cap Cyl Hd WPC LZone Access spt Total
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 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