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8
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 read capacity data. Total LBAs = read capacity data
shown below + 1.
Model
ST34555
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 (part number 77738479).
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 Interface Product Manual (part number 77738479). 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 Hawk 4XL Installation Guide (part number 77767507) unless otherwise
specified. The factory 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:
• The capacities shown in Section 3.5. You can order other capacities by selecting other sparing schemes and
sector sizes.
• Single unit shipping pack. The drive normally ships in bulk packaging to provide maximum protection against
transit damage. Units shipped individually require additional protection as provided by the single unit ship-
ping pack. Specify this option if you are planning to ship single units to your customers.
• The Hawk 4XL Installation Guide (part number 77767507) is usually included with each standard OEM drive.
You may order additional copies of this publication.
3.9
Accessories (user installed)
The following accessories are available. Qualified individuals can install these accessories in the field.
• Front panel kit (with green rectangular LED lens), part number 73501451.
• Single unit shipping pack.
• Hawk 4XL Installation Guide (part number 77767507).
Formatted [1]
data block size
512 byte/sector
87A25Bh (4.55 GB)
Hawk 4XL Product Manual, Rev. A
Unformatted
Sparing
6.5 GB
118 spares per six cylinder region
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