Seagate ST12450W, Product Manual

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ST12450W/WD Product Manual, Rev. A 37
9.0 Defect and error management
The drive, as delivered, complies with this product manual. The read error
rates and specified storage capacities are not dependent on using defect-
management routines by the host (initiator).
Defect and error management in the SCSI system involves the drive’s
internal defect/error management and SCSI system error considerations
(errors in communications between the initiator and the drive). Tools for
designing a defect/error management plan are briefly outlined in this section.
References to other sections are provided when necessary.
9.1 Defects and errors
Identified defects are recorded on the drive’s defects list (referred to as the
primary or ETF defect list). These known defects are reallocated during the
initial drive format at the factory. (See Format Unit command Section 5.2.1.2
in the
SCSI-2 Interface Product Manual, part number 77738479.) Data
correction by ECC recovers data from additional flaws if they occur.
Details of the SCSI commands supported by the drive are described in the
SCSI-2 Interface Product Manual. Also, more information about the drive’s
Error Recovery philosophy is presented in Section 6 of the
SCSI-2 Interface
Product Manual.