HP XP20000XP24000 Disk Array - Manual (Page 79)

Preparing for Cross-OS File Exchange Operations 3-23
Hitachi USP V Cross-OS File Exchange User’s Guide
Note: The VIR OPEN-x devices can also be called custom volume size (CVS)
devices (e.g., OPEN-3-CVS). When formatting a VIR OPEN-x LU, use the
number of cylinders defined for VIR minus seven (e.g., use 993 cylinders for a
VIR device defined with 1000 cylinders). The cylinder size is: one cylinder =
15 tracks, one track = 96 sub-blocks, one sub-block = 512 bytes. Table 3-9
shows the relation between block length and write available capacity per track.
The actual data capacity per cylinder = (write available capacity per track) ×
(15 tracks).
Table 3-9 Relation between Block Length and Write Available Capacity
per Track
Block Length by
Allocater = (A)
(Bytes)
Write Available
Data per Track
(Bytes)
Block Length by
Allocater = (A)
(Bytes)
Write Available
Data Per Track
(Bytes)
Block Length by
Allocater = (A)
(Bytes)
Write Available
Data Per Track
(Bytes)
23477 - 32760 (A) × 1 1589 - 1684 (A) × 22 565 - 596 (A) × 44
15477 - 23476 (A) × 2 1493 - 1588 (A) × 23 533 - 564 (A) × 45
11477 - 15476 (A) × 3 1397 - 1492 (A) × 24 501 - 532 (A) × 46
9077 - 11476 (A) × 4 1333 - 1396 (A) × 25 469 - 500 (A) × 47
7477 - 9076 (A) × 5 1269 - 1332 (A) × 26 437 - 468 (A) × 48
6357 - 7476 (A) × 6 1205 - 1268 (A) × 27 405 - 436 (A) × 49
5493 - 6356 (A) × 7 1141 - 1204 (A) × 28 373 - 404 (A) × 50
4821 - 5492 (A) × 8 1077 - 1140 (A) × 29 341 - 372 (A) × 51
4277 - 4820 (A) × 9 1045 - 1076 (A) × 30 309 -340 (A) × 52
3861 – 4276 (A) × 10 981 - 1044 (A) × 31 277 - 308 (A) × 53
3477 –3860 (A) × 11 949 - 980 (A) × 32 245 - 276 (A) × 54
3189 – 3476 (A) × 12 917 - 948 (A) × 33 213 - 244 (A) × 55
2933 – 3188 (A) × 13 853 - 916 (A) × 34 181 - 212 (A) × 56
2677 – 2932 (A) × 14 821 - 852 (A) × 35 149 - 180 (A) × 57
2485 – 2676 (A) × 15 789 - 820 (A) × 36 117 - 148 (A) × 58
2325 – 2484 (A) × 16 757 - 788 (A) × 37 85 - 116 (A) × 59
2165 – 2324 (A) × 17 725 - 756 (A) × 38 53 - 84 (A) × 60
2005 – 2164 (A) × 18 693 - 724 (A) × 39 21 - 52 (A) × 61
1877 – 2004 (A) × 19 661 - 692 (A) × 40 1 - 20 (A) × 62
1781 – 1876 (A) × 20 629 - 660 (A) × 41 — —
1685 – 1780 (A) × 21 597 - 628 (A) × 42 — —
Note: The write available data per track includes the four-byte RL information
and four-byte BL information for each record. When transferring variable-
length records, make sure to take this extra required space into account.
WARNING: The FX FMT utility erases all data on the OPEN-x LU being
formatted. If necessary, back up the data on the OPEN-x LUs prior to FMT
formatting.