Data Replication Manager HSG80 ACS Version 8.6-4P Release Notes

Common Platform Issues
Release Notes – Data Replication Manager HSG80 ACS Version 8.6-4P 13
Intermittent Double Normalization After a Full Failback or
Failback To New Hardware Procedure
After you have performed a full failback or failback to new hardware, a second
normalization (from the initiator to target) can occur. This double normalization
happens after the point in the failback procedure where you add the target and
normalize your storage sets (from the target to initiator).
The only effect of this extra normalization is to add the additional controller overhead
of doing a full copy—it causes no data corruption. When normalization is complete,
you can proceed with the failback and add the load at the appropriate point in the
procedure.
Command Scripter Communication Loss Due To SCSI Error
If Command Scripter v1.0 has a loss of communication while a script is running, it
will cause the script to abort, and the script will not finish running. You must then put
the controllers in a known state by issuing the appropriate CLI commands from the
controllers. You can examine the .log files in the $CLONE_HOME/log directory to
determine which commands had been executed before communication was lost.
If the communication failure is due to a SCSI error, then the loss of connection is only
momentary. You can verify that the connection is re-established by issuing the
following command from the host:
cmdscript -f <device Name> "show this"
However, if this command continuously gives a communication failure error, a
hardware failure or configuration error is indicated. You will need to troubleshoot the
loss of connection for causes such as broken links, failed devices, controller
configuration, and so on.
Waiting for Write History Logging Disks
After clearing invalid cache and lost data, remote copy set processing will halt. When
you issue the CLI command, SHOW REMOTE_COPY_SETS FULL, if you see the
following error message:
Waiting for write history logging disks to become ready.
restart the controller to clear this condition.