HP XP Command View Advanced Edition Software - Manual (Page 196)

Troubleshooting 196
For example, depending on hardware, the servers and HBAs may not recognize the LUNs using the subject
port unless a specific host mode is selected for the port. For details on how to change the port settings, refer to
the manual for the corresponding storage subsystem.
The mode cannot be switched if a host is currently performing I/O operation with the LUNs
of the port. To proceed, shut down the host, change the mode, and then reboot the host.
Are you sure you want to continue?
Confirm that the host has shut down, and continue the operation.
12-3-3 LUN Security Automatically Takes Effect
If you try to perform an operation from Device Manager that may cause an error in host I/O, the following
warning message displays:
This operation will change the port's LUN security, which may prevent other hosts and
External ports from accessing LUNs with the following ports. Are you sure you want to
continue?
When LUN security takes effect, the servers and HBAs that currently recognize the LUN using the subject port
may no longer be able to recognize that LUN. If so, you must set LUN security for these servers and HBAs. If
you perform this operation, you may have to execute Disconnect Volume in Remote Web Console.
12-3-4 Access from Hosts is Disabled
When you restart a storage subsystem to make a setting take effect, the following warning message displays:
The system will now be rebooted to apply the settings. I/O requests cannot be received
during the reboot. If the system is being used as an external subsystem, make sure that
you execute the Disconnect Subsystem operation Remote Web Console.
Confirm that the hosts are not issuing I/Os on any LUNs for the storage subsystem you are restarting, and
continue the operation. If the subsystem is used as an external subsystem, make sure that you execute
Disconnect Subsystem in Remote Web Console.
12-3-5 Data in an S-VOL (Secondary Volume) Is Incomplete
When you change pair status to SPLIT during an I/O operation on a P-VOL (primary volume), the following
warning message displays:
If this operation is performed during I/O processing on the primary volume, the data of
the secondary volume may be corrupted. Make sure that no I/O processing is being
performed on the primary volume before you proceed. Are you sure you want to continue?
Confirm that the hosts are not issuing I/Os on any primary volume (P-VOL), and continue the operation.
12-3-6 I/Os to a Primary Volume are Affected
When you set the copy pace to a value other than a recommended one, the following warning message
displays:
An un-recommended value is specified for the copy pace. Make sure the value is correct.
Are you sure you want to continue?
For StorageWorks XP12000/XP10000, set the copy pace for Business Copy XP, Continuous Access XP, and
Snapshot XP to 15. Because changing this value affects I/O operations on the primary volume (P-VOL),
contact a system administrator.
12-3-7 Pair Setting Cannot be Performed
When a volume specified as a copy pair is deleted, you may not be able to set a pair. In such a case, the
following warning message displays:
Deleting pair volumes or command devices may disable later modification of the pair
volume settings. Are you sure you want to continue?
Make sure that the following conditions for setting a pair are met:
• For pair volumes: The host recognizes the pair volumes, and LUN security is set for that host.
• For command devices: The host that recognizes a pair volume also recognizes the command device, and
LUN security is set for that host.