Adaptec 2074700-R - ICP Vortex GDT8514RZ RAID Controller, Руководство пользователя

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Software Installation and User’s Guide 151
ICP RAID Console
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 disk defective. The retries counter also
increments when the parameters of a hard disk are changed.
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.
Note:
If a hard disk works with alternate tracks, it is generally no longer suitable for applications
with high performance expectations. Whenever a defective block is being accessed, the
read/write actuator has to move to an alternate position and this requires extra time.
The Grown Defects counter records the number of media defects that have occurred since
the hard disk was delivered by the manufacturer. A hard disk is in good condition when it
has 0 grown defects. Any value greater than 0 indicates a grown defect condition. For
more information on grown defects see
Section 10.5.2.4, View Defects/Status .
Last Status information should always be 0x00000000. After a device failure or other
significant events, a different value may be displayed here. This value is volatile and is
reset to 0x00000000 after each power up and/or reset.
Select a hard drive from the Hard Disk Information screen and press <Enter> to view
additional information on the SCSI parameter settings.
Figure 10-111. Hard Disk Information
10.6.4 Save Information
Use the Save Information menu option to save the configuration information of the
selected ICP RAID controller and its devices in an ASCII file. See Figure 10-112 . Such
system information/documentation would be helpful should you require support.