GDS setup operations are described below.
"6.3.1 Setting Up System Disk Mirroring"
When mirroring the system disk, set up system disk mirroring on all the nodes, and then restart OS on all the nodes.
"6.3.2 Setting Up Shared Disks"
When using the shared disk, set up the shared disk volumes.
Add this setting also when performing the mirroring among servers.
Note
If you are using a shared disk unit, you must use GDS to manage that unit.
Execute the configuration setting of GDS after initializing the cluster.
To use EC or REC function of the ETERNUS Disk storage systems without using PRIMECLUSTER GD Snapshot, do not add a GDS class that includes a copy destination disk of EC or REC to a cluster application.
When EC or REC is either the synchronous processing in process or equivalency maintain status, a program running on the server may fail to access the destination disk with error. Therefore, if the class that includes the copy destination disk is added to a cluster application, the program running on the server may fail to access the destination disk. This may lead to a failover of the cluster application.
