Troubleshooting
2–11
Hitachi AMS 2000 Family Command Control Interface (CCI) Reference Guide
TCE troubleshooting
If the following problem occurs, the pair status changes to PSUE:
• The amount of the data in the data pool exceeds the capacity allowed
for use
• A path detach operation occurs
• A logical abnormal state occurs due to problems with the storage
system
• An abnormal state occurs from causes unrelated to the storage system
If a hardware or Fibre path error occurs while you are operating the TCE,
both of the following are necessary:
• A CCI user intervention
• Assistance from a Hitachi Customer Service representative
When the amount of the data in the data pool exceeds the capacity allowed
to be used, you should:
1. Resynchronize all pairs whose data pools have a PSUE or PFUS status.
2. Check whether the configuration, including the data pool capacity and
number of V-VOLs (when concurrent use of SnapShot), is appropriate.
3. Perform a TCE operation to recover a pair status (such as paircreate).
For example, when formatting is needed to resolve an LU error and that LU
is used for TCE, 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. Note that the
Hitachi personnel can only remove errors which result from hardware. An
operation such as recovering the TCE pair status (for example,
resynchronizing) must be done by you.
shows the flow of action when the PSUE error
occurs.
shows the share of action to be taken by you.
•
Note 1: In the case of TCE, even when one of the pairs belonging to the
same CTG is placed in the PSUE status, all the pairs in the CTG are placed
in the PSUE status because the change to the PSUE status is made in units
of CTG. However, concerning the pair in the PSUS status, the status is not
changed to PSUE but left as it is.
Note 2: In the case where the data pool-over occurs in the secondary data
pool, it is reported to the P-VOL after the S-VOL status is changed to PFUS
and the P-VOL status is changed to PSUE. On the other hand, when the data
pool-over occurs in the primary data pool, only the P-VOL status is changed
to PFUS and the change of the S-VOL status does not occur.
Summary of Contents for AMS 2000 Series
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