Product manual

Cheetah 4LP FC Product Manual, Rev. A 7
3.5 Unformatted and formatted capacities
The standard OEM models are formatted to 512 bytes per block.
ST34501FC drives uses a regional sparing scheme. The drive is divided into regions that are each 12 cylinders
wide. Each region has 108 spares when formatted with 512-byte sectors.
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 also depends on the spare real-
location scheme you select. See the Mode Select command and the Format command in the
Fibre Channel
Interface Manual
(part number 77767496).
3.6 Factory-installed accessories
OEM standard drives are shipped with the Cheetah 4LP FC Installation Guide (part number 83329180).
3.7 Factory-installed options
You may order the following items which are incorporated at the manufacturing facility during production or
packaged before shipping:
• 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.
3.8 User-installed accessories
The following accessories are available. All kits may be installed in the field.
• Evaluation kit, part number 73473641.
This kit provides an adapter card (“T-card”) to allow cable connections for two FC ports and DC power. Two
twin axial cables, 6 feet in length, are included for the input and output connections to the FC interface.
Formatted Unformatted
ST34501FC 4.52 Gbytes 5.59 Gbytes