Monitoring Event Logs
The ServeRAID controller stores, in the event logs, information concerning various unexpected events.
There are three types of event logs: a device event log, a hard event log, and a soft event log.
To view the event logs:
A screen similar to the following appears.
Device Event Log: The Device Event Log contains event counters for each attached physical device.
SCSI devices detect these events and reports them to the ServeRAID controller through Check Condition status.
Predictive Failure Analysis (PFA)
A device has signaled the ServeRAID controller that it might fail in the near future.
The ServeRAID controller detects these events. Most likely, these events are caused by the ServeRAID controller.
The ServeRAID controller detects these events. Most likely, these events are caused by the SCSI device, such as selection timeout, unexpected bus free, or SCSI phase event.
Note: Under normal operating conditions, the event logs will contain entries that are not errors.
Hard Event Log: You can view the Hard Event Log.
|Logical Drive Number||The number of the logical drive.|
|Blocked||No - The logical drive is accessible.|
|Yes - The logical drive is not accessible.|
|Part of Array||The identifier of the logical drive's disk|
|array (A, B, C, D, E, F, G, H).|
|Part of Merge||The identifier of the logical drive's merge group (1 through 254)|
|Date Created||The date that the logical drive was created|
|State||The current drive state (see 'Logical Drive States' for more information).|
|Size||The size in megabytes.|
|RAID Level||RAID level (0, 1 or 5).|
|Write Policy||WT - Write-through|
|WB - Write-back|
|Read Ahead||Off - Disk Read-Ahead is inactive|
|ON - Disk Read-Ahead is active|
|Stripe Unit Size||The size of each stripe unit per hard disk (8, 16, 32, 64).|
|Number of Chunks||The number of hard disk drives that make up the logical drive.|
|Stripe Order||The channel and bay number of the physical drives that make|
|up the logical drive|
Monitoring the Physical Device Information: You can monitor the physical device information by clicking on the desired device button on the Main Screen of the Administration and Monitoring utility program.
When you click on the device button, a screen similar to the following appears.
|Channel||The channel to which the device is connected.|
|Bay||The bay number of the device on a channel (1 to 16).|
|SCSI ID||The SCSI ID (0 to 15).|
|Vendor||The drive manufacturer.|
|Serial Number||The drive manufacturer's identifier.|
|Size||The size of the drive in megabytes.|
|State||The current drive state (see 'Physical Device States' and|
|'Logical Drive States' for more information.)|
|Soft Event||The number of soft events reported from the device event log.|
|Hard Event||The number of hard events reported from the device event log.|
|Misc Event||The number of miscellaneous events reported from the device event log.|
|Parity Event||The number of parity events reported from the device event log.|
|PFA||Yes - Device indicates predictive failure analysis event.|
|No - Device does not indicate predictive failure analysis event.|
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