HP StorageWorks SAN Virtualization Services Platform administrator guide (5697-0109, July 2009)

Corrective actionProblem
• Check the status of the EVA or MSA.
• Check the VSM interface as to whether the virtual
disk is listed as a partial status. Partial status means
that one or more of the EVA or MSA virtual disks
that make up a VSM virtual disk are not accessible
to VSM. If it is a partial status, check zoning and
LUN masking to correct the problem.
• Check the DPM logs as to whether the virtual disk
is listed in a PART status. A PART status means that
one or more of the EVA or MSA virtual disks that
make up the VSM virtual disk is not accessible to
the DPM.
• Check DPM presentation to the host server.
Server I/O to virtual disk fails
• Check the status of the EVA or MSA.
• Check the VSM interface as to whether the virtual
disk is listed as a partial status. Partial status means
that one or more of the EVA or MSA virtual disks
that make up a VSM virtual disk are not accessible
to VSM.
• Check for storage pool capacity. Low or no pool
capacity can cause cloning or replication tasks to
fail.
• Check the EVA or MSA presentation.
VSM I/O fails/snapclone fails/Continuous Access
replication fails
• Check your zoning.
• Reboot the DPMs as needed.
• Reboot the VSMs as needed.
• Check if DPM licenses have been installed.
VSM does not see the DPMs
Presentation problems
Table 12 Presentation problems
Corrective actionProblem
• Verify that the correct preferred path is configured
with HP Command View EVA or the ACU for each
LUN that is exposed. If so, reboot the VSM server.
• If the preferred path is incorrect, unpresent the
virtual disks to VSM, rescan with VSM to remove
the virtual disks, fix the presentation mode on HP
Command View EVA or the ACU, re-present the
LUNs to VSM, and rescan with VSM.
Back-end LUNs cannot be seen, even after a rescan
using the VSM GUI.
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