Product manual

Cheetah 4LP FC Product Manual, Rev. A 23
7.0 Defect and error management
The drive, as delivered, complies with this product manual. The read error rates and specified storage capaci-
ties are not dependent upon use of defect management routines by the host (initiator).
Defect and error management in the SCSI protocol involves the drive internal defect/error management and
FC-AL system error considerations (errors in communications between the initiator and the drive). Tools for
use in designing a defect/error management plan are briefly outlined in this section. References to other sec-
tions are provided when necessary.
7.1 Drive internal defects/errors
Identified defects are recorded on the drive defects list tracks (referred to as the primary or ETF defect list).
These known defects are reallocated during the initial drive format operation at the factory. See the Format
Unit command in the
Fibre Channel Interface Manual (part number 77767496). Data correction by ECC is
applied to recover data from additional flaws if they occur.
Details of the SCSI commands supported by the drive are described in the
Fibre Channel Interface Manual .
Also, more information on the drive Error Recovery philosophy is presented in the
Fibre Channel Interface
Manual
.