Seagate 15K.3 - Cheetah - Hard Drive Product Manual Download Page 17

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Cheetah 15K.3 SCSI Product Manual, Rev. G

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. See
Mode Select Command and Format Command in the

SCSI Interface Product Manual

[2]

User available capacity depends on spare reallocation scheme selected, the number of data tracks per
sparing zone, and the number of alternate sectors (LBAs) per sparing zone.

3.6

Programmable drive capacity

Using the Mode Select command, the drive can change its capacity to something less than maximum. See the
Mode Select Parameter List table in the

SCSI Interface Product Manual

. Refer to the Parameter list block

descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall not
change the capacity it is currently formatted to have. A number in the number of blocks field that is less than
the maximum number of LBAs changes the total drive capacity to the value in the block descriptor number of
blocks field. 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 the

Cheetah 15K.3 Installation Guide

, part number 100148125, and the

Safety and Regulatory Agency Specifications

, part number 75789512 (unless otherwise specified). The factory

also ships with the drive a small bag of jumper plugs used for the J2, J5, and J6 option select jumper headers
on LW models only.

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

Cheetah 15K.3 Installation Guide

, part number 100148125, is usually included with each standard OEM

drive shipped, but extra copies may be ordered.

• The

Safety and Regulatory Agency Specifications

, part number 75789512, is usually included with each

standard OEM drive shipped, but extra copies may be ordered.

3.9

Accessories (user installed)

The following accessories are available. All accessories may be installed in the field.
• Single unit shipping pack.

Formatted
data block size
512 bytes/sector [1]