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USER RESPONSIBLE FOR VERIFYING VERSION AND COMPLETENESS
OEM FUNCTIONAL SPECIFICATION ULTRASTAR XP (DFHC) SSA MODELS 1.12/2.25 GB - 1.0" HIGH
Table 1. Gross sectors per track for several block lengths
Table 2. User capacity for several block lengths
2.1.1 Capacity Equations
2.1.1.1 For Each Notch
The next group of equations must be calculated separately for each notch.
user bytes/sector (ub/sct) =
ub/lba
sct/lba
user sectors/cyl (us/cyl) = (sct/trk)(trk/cyl) - spr/cyl
spares/notch (spr/nch) = (spr/cyl)(ucyl)
Note: Add lcspr to the equation above for the notch closest to the inner diameter (#10).
user sectors/notch (us/nch) = (us/cyl)(ucyl)
Note: Subtract lcspr from the equation above for the notch closest to the inner diameter (#10).
Notch #
User bytes /
logical block
1 2 3 4 5 6 7 8 9 10
256 216 216 216 202 195 180 180 180 180 162
512 135 135 130 126 120 115 112 108 105 100
520 128 128 128 123 115 112 108 105 102 99
522 128 128 128 122 115 112 108 105 102 90
524 128 128 128 120 115 112 108 105 102 90
528 128 128 126 120 112 112 108 105 101 90
600 115 115 115 110 102 101 97 90 90 90
688 102 102 102 98 90 90 90 90 81 78
744 96 96 96 90 90 90 81 78 77 73
C4x Models C2x Models C1x Models
User bytes /
logical block
formatted
capacity
(bytes)
logical
blocks /
drive
formatted
capacity
(bytes)
logical
blocks /
drive
formatted
capacity
(bytes)
logical
blocks /
drive
256 3,654,540,800 14,275,550 1,826,312,448 7,134,033 912,135,680 3,563,030
512 4,512,701,440 8,813,870 2,255,098,368 4,404,489 1,126,337,536 2,199,878
520 4,375,536,880 8,414,494 2,186,554,760 4,204,913 1,092,119,600 2,100,230
522 4,374,300,492 8,379,886 2,185,931,898 4,187,609 1,091,803,716 2,091,578
524 4,385,878,952 8,369,998 2,191,716,460 4,182,665 1,094,691,544 2,089,106
528 4,408,629,984 8,349,678 2,203,082,640 4,172,505 1,100,365,728 2,084,026
600 4,512,402,000 7,520,670 2,254,925,400 3,758,209 1,126,282,800 1,877,138
688 4,604,578,976 6,692,702 2,300,969,904 3,344,433 1,149,310,880 1,670,510
744 4,675,830,192 6,284,718 2,336,559,528 3,140,537 1,167,099,408 1,568,682
Source filename=SPECS IBM Corporation Page 13 of 87