Source Disk Fails During Replace Member Operation; Target Disk Fails; General Disk Fails; Linux Operating System Errors - Dell PowerEdge H730P User Manual

Source Disk Fails During Replace Member Operation

Issue: The source disk fails during the Replace Member operation.
Corrective If the source data is available from other disks in the virtual disk, the rebuild begins
Action: automatically on the target disk, using the data from the other disks.

Target Disk Fails

Issue: The target disk fails.
Corrective If the target disk fails, the Replace Member operation aborts.
Action:

General Disk Fails

Issue: A general disk fails.
Corrective If the target disk fails and the Replace Member operation aborts but the source
Action: data is still available, then the Replace Member operation continues as Replace
Member.

Linux Operating System Errors

Virtual Disk Policy Is Assumed As Write-Through Error Message

Error:
<Date:Time> <HostName> kernel: sdb: asking for cache data
failed
<Date:Time> <HostName> kernel: sdb: assuming drive cache: write
through
Corrective The error message is displayed when the Linux Small Computer System Interface
Action: (SCSI) mid-layer asks for physical disk cache settings. The controller firmware
manages the virtual disk cache settings on a per controller and a per virtual disk
basis, so the firmware does not respond to this command. The Linux SCSI mid-
layer assumes that the virtual disk's cache policy is Write-Through. SDB is the
device node for a virtual disk. This value changes for each virtual disk.
For more information about Write-Through cache, see
Policies.
Except for this message, there is no effect of this behavior on normal operation.
The cache policy of the virtual disk and the I/O throughput are not affected by this
message. The cache policy settings for the PERC SAS RAID system remain
unchanged.
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Virtual Disk Write Cache