Product manual
8 Barracuda 4LP Product Manual, Rev. D
3.5 Unformatted and formatted capacities
Formatted capacity depends on the number of spare reallocation sectors reserved and the number of bytes per
sector. The following table shows the standard OEM model capacities:
Notes.
[1] Sector size selectable at format time. Users having the necessary equipment may modify the data block
size before issuing a format command and obtain different formatted capacities than those listed. User
available capacity depends on spare reallocation scheme selected. See Mode Select Command and For-
mat Command in the SCSI Interface Product Manual P/N 77738479.
[2] Sparing equivalent to eighty spare sectors per eight cylinder region. Spares are located at the end of each
sparing region.
3.6 Programmable drive capacity
Using the Mode Select command, the drive can change its capacity to something less than maximum. See
Table 5.2.1-13 in the SCSI I/O Product Manual, P/N 77738479, Rev. G. Refer to the Parameter list block
descriptor, bytes 1, 2 and 3. A value of zero in bytes 1, 2 and 3 indicates that the drive shall not change the
capacity it is currently formatted to have. A number in bytes 1, 2 and 3 that is less than the maximum number of
LBAs changes the total drive capacity to the value in the block descriptor bytes 1, 2 and 3. A value greater than
the maximum number of LBAs is rounded down to the maximum capacity.
3.7 Factory installed accessories
OEM Standard drives are shipped with Installation Guide P/N 77767492 (unless otherwise specified). The fac-
tory also ships with the drive a small bag of the two jumper plug types used for the J6, J2 and J1-Aux option
select jumper headers.
3.8 Options (factory installed)
All customer requested options are incorporated during production or packaged at the manufacturing facility
before shipping. Some of the options available are (not an exhaustive list of possible options):
• Other capacities can be ordered depending on sparing scheme and sector size requested.
• Single unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection
against transit damage. Units shipped individually require additional protection as provided by the single unit
shipping pack. Users planning single unit distribution should specify this option.
• The Installation Guide (P/N 77767492) is usually included with each standard OEM drive shipped, but extra
copies may be ordered.
• Level 2 SCAM compliance.
3.9 Accessories (user installed)
The following accessories are available. All accessories may be installed in the field.
• Single unit shipping pack.
Formatted [1]
Data Block Size
512 Byte/Sector Unformatted
ST34371 4.35 GB [2] 5.31 GB
ST32171 2.16 GB [2] 2.65 GB
ST34571 4.55 GB [2] 5.54 GB
ST32271 2.26 GB [2] 2.77 GB