DataDirect Networks S2A9550, User Manual

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Trouble Shooting
DataDirect Networks S2A 9550 User Guide
87
2. Use the
DISK
command to check the status of the channel. Figure 4-74 below shows that
the system is looking for Channel D and there may be a problem with that channel.
Recovery steps:
• You may get guidance from DataDirect Technical Support to determine the cause of error
and steps to recover.
• Isolate the cause of channel failure, (for example, loose cable connections).
• Rebuild all the drives on that channel individually by issuing command:
DISK
REBUILD=<tier><channel> (
for example,
disk rebuild=1d, disk rebuild=2d, disk rebuild=3d).
Several rebuild operations are processed at the same time. The other rebuild jobs are
queued up and processed in the same order as they were entered.
4.1.3 Component Failure on Enclosures
The S2A implements the SES (SCSI Enclosure Services) protocol for communications with the
drive enclosures. If your enclosures provides SES communications, status information of the
enclosures, including power supply, fan, and presence of drive, will be obtained and evaluated.
If a change in status is found, an “SES” message is displayed on your console
(Figure 4-75)
.
Tier Configuration
Space Available
(Mbytes) Tier Disk Status Lun List
Capacity
(Mbytes)
ABC.EFGHPS
-----------------------------------------------------------------
280012 280012 1
ABC.EFGHPS 280012 280012 2
ABC.EFGHPS 280012 280012 3
Automatic disk rebuilding is Enabled
Figure 4-73 Checking the Tier Status
System rebuild extent: 32 Mbytes
System Capacity 840036 Mbytes, 840036 Mbytes available.
System rebuild delay: 60
Owner
Disk Channel Status
Figure 4-74 Disk Channel Information
Disk Channel A healthy.
Disk Channel B healthy.
Disk Channel C healthy.
Disk Channel D acquiring loop synchronization.
Disk Channel E healthy.
Disk Channel F healthy.
Disk write caching is Enabled.
Audio/Visual settings Disabled.
Disk command outstanding: 0
Disk command timeout: 10 seconds.
All disks are healthy.
Disk command AV timeout: 0
Fast AV reads: Enabled
Ordered Tag Count: 0
Disk Channel H healthy.
Disk Channel P healthy.
Disk Channel S healthy.
Disk Channel G healthy.