HP C2488A Technical Reference Manual page 15

Table 1-1. HP C2486A/88A/90A SCSI Disk Drive Capacities (continued)
These numbers are for comparison only. Capacities are calculated using a 512-byte sector. When other sector
sizes are used, formatted capacities will change. Unformatted capacities are given
in
parenthesis ( ).
Zone 7 Zone 8 Zone 9 Zone 10 Zone 11 Zone 12 Zone 13
(hIDer)
Data Tracks per Surface: 152 148 146 136 164 144 180
Data Sectors per Track: 88 84 80 76 72 68 64
Data Bytes per Track:
49,056 43,008 40,960 38,912 36,864 34,816
32,768
(54,296) (51,828) (49,360) (46,892) (44,424) (41,956) (39,488)
Data Sectors per Cylinder:
C2486A 968 924
880 836
792 748 704
C2488A 1,232 1,176 1,120 1,064 1,088 952 896
C2490A 1,496 1,428 1,360 1,292 1,224 1,156 1,088
Data Bytes per Cylinder:
C2486A 495,616 473,088 450,560 428,032 405,504
382,976 360,448
(597,256) (570,108) (542,960) (515,812) (488,664) (461,516)
(434,368)
C2488A 630,784 602,112 573,440
544,768 516,096 487,424 458,752
(760,144) (725,592) (691,040) (656,488) (621,936) (587,384) (552,832)
C2490A 765,952 731,136 696,320 661,504 626,688 591,872 557,056
(923,032) (881,076) (839,120) (797,164) (755,208) (713,252) (671,296)
Notes:
1. There are 2531 total cylinders per drive, allocated as follows: 2467 dMa cylinders, 62 spare cylinders, and 2
cylinders reserved for logs and maintenance information. Partial cylinders have been rounded to the next
whole number. Refer to Chapter 3, Table 3-1 for a complete cylinder allocation list.
DRAFT Product Specifications 1-5
1/18/93 09:58