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ShadowImage troubleshooting
A hardware failure can cause a ShadowImage pair failure, in which case you
will have to restore the pair status.
If you perform a forced pair release, the pair status changes to PSUE (as it
does for a pair failure) and you must restore the pair status.
If DP-VOLs are used for the LUs configuring a pair, a pair failure can occur,
depending on the consumed capacity of the DP pool, and the pair status
may become PSUE.
If the DP-VOL created in the DP pool is used for a ShadowImage pair, a pair
failure may occur since the required area cannot be allocated, If a failure
occurs during the DP pool formatting, wait for the formatting of the DP pool
for total capacity of the DP-VOLs created in the DP pool to complete. If a
failure occurs due to DP pool capacity depletion, you can return the DP pool
status to normal by performing the DP pool capacity growing and DP pool
optimization operations and increasing the DP pool free capacity.
If a hardware error occurs while you are operating ShadowImage, both of
the following are necessary:
•
A CCI user intervention
•
Assistance from a Hitachi Customer Service representative
For example, when formatting is needed to resolve an LU error and that LU
is used for ShadowImage, the pair must be released by you (CCI operation
by you) before the LU can be formatted. Therefore, please contact Hitachi
personnel because maintenance requires you to issue CCI commands.
Hitachi personnel can only remove errors which result from hardware. An
operation such as recovering a ShadowImage pair status (for example,
resynchronizing) must be done by you.
Figure 2-1 on page 2-3
occurs.
Table 2-1 on page 2-3
2–2
Hitachi AMS 2000 Family Command Control Interface (CCI) Reference Guide
shows the flow of action when the PSUE error
shows the share of action to be taken by you.
Troubleshooting
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Table of Contents
Troubleshooting
