USER RESPONSIBLE FOR VERIFYING VERSION AND COMPLETENESS
OEM FUNCTIONAL SPECIFICATION ULTRASTAR XP (DFHC) SSA MODELS 1.12/2.25 GB -1.0" HIGH
Total Cylinders (tcyl) All models C4x Models C2x Models C1x Models
& User Cylinders (ucyl) tcyl ucyl ucyl ucyl
Notch #1 1893 1879 1877 1872
Notch #2 956 955 955 955
Notch #3 49 48 48 48
Notch #4 310 309 309 309
Notch #5 349 348 348 348
Notch #6 116 115 115 115
Notch #7 214 213 213 213
Notch #8 190 189 189 189
Notch #9 131 130 130 130
Notch #10 208 206 206 206
Sum of all Notches 4416 4392 4390 4385
Spares Sectors/cylinder (spr/cyl) C4x Models C2x Models C1x Models
Notch #1 40 20 10
Notch #2 40 20 10
Notch #3 38 19 10
Notch #4 37 19 9
Notch #5 36 18 9
Notch #6 34 17 9
Notch #7 33 17 8
Notch #8 32 16 8
Notch #9 31 16 8
Notch #10 30 15 7
Last cylinder extra spares (lcspr) 60 30 14
User bytes/sector (ub/sct) 256 - 744 (even number of bytes only)
Sectors/logical block (sct/lba) 1-8
The lowest sct/lba that satisfies th e following rules is used...
1. Block Length is evenly divisible by a number 2-8.
2. Quotient of previous equation is evenly divisible by 2.
3. Quotient must be ≥256 and ≤744.
User bytes/logical block (ub/lba) 256 - 5952 (See rules for determining sct/lba above for determining sup-
ported ub/lba values.)
Sectors/track (sct/trk) (See Table 1 on page 13 or contact an IBM Customer Representative
for other block lengths.)
Source filename=SPECSIBM CorporationPage 12 of 87