Planning Volume 2, Control Workstation and Software Environment
Plan how you are going to use the Virtual Shared Disk and Recoverable
Virtual Shared Disk software before you install the hardware. Consider
- The Virtual Shared Disk subsystem lets you assign volume groups located on
any physical disks in any node within a partition. Volume groups
assigned to be used by the Virtual Shared Disk subsystem ought to be used only
to define virtual shared disks.
- Each virtual shared disk cluster must be in the same system
partition. You can have separate virtual shared disk clusters in
separate system partitions, but they cannot communicate directly with each
other. See Chapter 7, Planning SP system partitions for system partition planning information.
- In order to provide recovery, the Recoverable Virtual Shared Disk software
requires twin-tailed disk storage which must be installed before you define or
use the virtual shared disks. It also requires a minimum of two SP
See the book PSSP: Managing Shared Disks for additional
explanation of these and other dependencies and restrictions.
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