Hitachi VSP F1500

Items Notes and restrictions
Linkage with HA
software
The HORC Manager must not be an object of the process monitoring
by the HA software (cluster manager), because HORCM should run
in the same level as the cluster manager. Cooperation with HA
software is done by activating the takeover command from the shell
script activated by the cluster manager in units of the package
software.
Note: Cannot use a pair volume for the cluster lock disk that HA
software uses for election.
Maintenance Restart of HORCM is required if the storage system configuration is
changed (for example, microcode exchange, cache memory install/
uninstall).
TrueCopy only: In the case of an error (for example, single error in
cache memory) which made the pair volume is accompanied by
maintenance work, the pairresync or paircreate command
cannot execute copy rejection.
SVP/GUM
microcode
exchange
In out-of-band method using SVP, if the microcode exchange of the
SVP is performed, the timeout on command occurs. Execute the
command again after finishing the microcode exchange.
In out-of-band method using GUM, if the maintenance on the
controller with GUM is performed, the timeout on command might
occur. Switch the command device so that the other virtual
command device of GUM can be used before the maintenance. For
details about the alternate command device function, see
Alternate
command device function on page 2-5.
Command device Each TrueCopy/ShadowImage command is executed by issuing a
command to the command device. The TrueCopy/ShadowImage
command is read or written from/into the specific block area of the
command device. Therefore, the command device cannot be used.
In addition, this device must not belong to an LVM volume group.
For Windows systems, do not assign a drive letter to the command
device to prevent utilization by general users.
SCSI alternate
path restrictions
If the P-VOL and S-VOL are on the same server, alternate path from
P-VOL to S-VOL cannot be used. Use of SCSI alternate path to a
volume pair in the pair status is limited to among primary
Troubleshooting
9-5
Command Control Interface User and Reference Guide