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

Common Platform Issues
12 Release Notes – Data Replication Manager HSG80 ACS Version 8.6-4P
Required Delay Time Before Failback
Be careful that you don’t start a site failover or site failback process too soon. You
must wait a minimum of 15 minutes from the completion of a site failover process to
begin a site failback procedure. You must also wait a minimum of 15 minutes from the
completion of a site failback process to begin a site failover procedure.
Removing Targets from the Proper Controller
A problem occurs if both fabric intersite links are not functioning and you remove the
target of a remote copy set that is part of an association set that has a write history log.
If you issue the command to remove the target from the opposite controller that the
remote copy set is not on line to, and then issue the CLI command SHOW REMOTE
COPY SET FULL, the target state will indicate LUN D0 is copying 0% complete. The
actual indication of the target state should be "No targets."
Example:
Name Uses Used by
---------------------------------------------------------------------------
RCS1 remote copy D1 AS1
Reported LUN ID: 6000-1FE1-0007-9DD0-0009-0510-3907-000E
Switches:
OPERATION_MODE = SYNCHRONOUS
ERROR_MODE = NORMAL
FAILOVER_MODE = MANUAL
OUTSTANDING_IOS = 20
Initiator (BUILDNGA\D1) state:
ONLINE to the other controller
Target state:
\D0 is COPYING 0% complete
The real problem occurs when you try to add the target back in, at which time you will
see the %EVL error message: "Too many targets have been specified in this set."
Solution: You cannot add a target if you are in a normal production mode or if you are
in a failed over condition. You must first issue the CLI command to delete the remote
copy set, and then issue the CLI command to add the remote copy set back in.
Deleting and then re-adding the remote copy set will force normalization.
Startup of Only One Fabric at a Time
When an event occurs that causes a fabric reconfiguration (for example, a scheduled
or unscheduled outage of intersite links, addition or removal of a switch or
switch-to-switch link, and so on), you should allow all of the Fibre Channel switches
in that fabric to reconfigure, before you reconfigure the second fabric.