Fujitsu MAH3091MC - Enterprise 9.1 GB Hard Drive, Руководство по обслуживанию

Страница: 41 / 157

C141-E103-01EN 3 - 4
Table 3.3 Zone layout and track capacity (MAH series)
Zone 0 1 2 3 4 5 6 7
Cylinder 0 to 859 860 to
1,959
1,960 to
2,639
2,640 to
3,969
3,970 to
5,149
5,150 to
6,429
6,430 to
7,759
7,760 to
8,689
Byte/track 418,715 404,500 397,667 386,000 375,667 363,750 348,917 341,083
Sector/track 648 621 612 594 576 558 540 522
Zone 8 9 10 11 12 13 14 15
Cylinder 8,690 to
10,019
10,020 to
11,249
11,250 to
12,299
12,300 to
13,319
13,320 to
14,649
14,650 to
15,379
15,380 to
16,499
16,500 to
17,544
*1 (17,685)
Byte/track 328,667 316,417 306,083 295,166 278,583 271,750 259,333 246,333
Sector/track 504 486 468 450 432 414 396 378
(*1) The value given in parenthesis is for MAH3091 series.
Note: When the logical data block length is 512 bytes, the sector/track capacity indicates above amount.
(1) User space
The user space is a storage area for user data. The data format on the user space (the length of data
block and the number of data blocks) can be specified with the MODE SELECT or MODE
SELECT EXTENDED command.
The default value of cylinders in the user space is MAH3182 series = 17545, MAH3091 series =
17,686, MAJ3364 series = 14,792, MAJ3182 series = 14,808 and MAJ3091 series = 13,261.
These also equal the maximum cylinders number for each series. The user can also specify the
number of logical data blocks to be placed in the user space with the MODE SELECT or MODE
SELECT EXTENDED command. When the number of logical data blocks is specified, as many
cylinders as required to place the specified data blocks are allocated in the user space.
A number staring with 0 is assigned to each cylinder required in the user space in ascending order.
If the number of cylinders do not reach the maximum, the rest of the cylinders will not be used.
Always one alternate cylinders can be established in the user space. Alternate cylinders will be
used for alternate blocks when primary cylinders in the user space are used up. See Subsections
3.1.2 and 3.3.2 for details.
(2) Internal test space
The Internal test space is an area for diagnostic purposes only and its data block length is always
512KByte. The Internal test space consists of 8 cylinders and outer-host cylinder is always
assigned. The user cannot change the number of cylinders in the Internal test space or their
positions.