Intel SRCU32 - RAID Controller, Руководство пользователя

Страница: 89 / 182

Storage Console 89
Figure 21. Controller Events
View Hard Drive Info
View Hard Drive Info menu shows information for hard drives. The hard drive information (shown
in Figure 22) includes SCSI Channel, SCSI ID, Vendor, Product Type, Retries/Reassigns, Grown
Defects, and Last Status.
Figure 22. Hard Drive Information
The Retries Counter
The Retries counter records the number of retries to a hard drive (the counter is incremented by one
unit whenever the Intel RAID Controller SRCU32 retries to access a hard drive. If the counter
continues to increase, it is likely that the cable is not adequate for the selected data transfer rate
(cable is too long, of poor quality or connectors are of poor quality) or that the SCSI bus is not
properly terminated (too many terminators on the cable or a missing terminator). In very few cases
is the hard drive defective. The retries counter also increments when the SCSI parameters of a hard
drive are changed.
The Reassigns Counter
The Reassigns counter records the number of media defects which occur on a hard drive. Defective
blocks of a hard drive are assigned substitute blocks (spare blocks) that are either on the same track,
or on alternate ones if all spare blocks on the same track are already in use. The administration of
the reassignments is carried out by the hard drive through reassignment tables. If you observe that
the number of reassigns is constantly increasing, you may assume that something is wrong with
the drive.