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

Platform-Specific Issues
Release Notes – Data Replication Manager HSG80 ACS Version 8.6-4P 17
• If the boot LUN is online to a controller that the server cannot access, the server
will be unable to boot. This condition could occur if the link between the server
and the fabric is broken. At this stage of booting, the server cannot move the LUN
between controllers. The LUN must be manually moved to the other controller by
issuing a RESTART THIS_CONTROLLER CLI command.
• When an intersite link with high latency (such as ATM) is used, the server may
take a long time to boot, and may be slow to respond during normal operation.
This is normal behavior for the server. It is caused by the time required to replicate
the boot disk across a very long distance.
Check Status
If a target controller or switch becomes inoperative and the Windows 2000 host is
rebooted, Secure Path Manager will not provide a report informing you that you have
lost multipath capability.
If you attempt to move a LUN to the inoperative path, a warning message appears,
indicating that you should check the Application Event Log for details. This may be
an indication that you have lost multipath capability.
Check the status of links, target switches, and target controllers.
HSG80 Controller Soft Shutdown/Restart
When the SHUTDOWN THIS or SHUTDOWN OTHER command is executed from the CLI,
the controller will shut down, forcing the LUNs to change paths. Secure Path will
immediately fail the LUNs over to the remaining path, but the original path may not be
marked as failed for several minutes.
Similarly, when the RESTART THIS or RESTART OTHER command is executed
from the CLI, the controller will restart, forcing the LUNs to change paths. Secure
Path will immediately fail the LUNs over to the remaining path, but the original path
will never be marked as failed. The icon for the failed LUN will be marked with a
yellow triangle with an exclamation point inside. The controller will finish restarting
and return to normal operation without notification.
The following procedure can be used to check whether a system is in this state:
1. Select one of the units in Secure Path Manager.
2. In the right-hand pane, click the path marked Available, and then right-click it to
bring up the menu.
3. Select Verify Path from the menu that appears.