This section provides information about configuring the
HP StorageWorks Enterprise Virtual Array (EVA) system for attachment
to a SAN Volume Controller.
Concurrent maintenance on the HP EVA
Concurrent
maintenance is the capability to perform I/O operations
to an HP EVA while simultaneously performing maintenance operations
on it.
Quorum disks on HP StorageWorks EVA systems
The SAN Volume Controller cluster
selects managed disks (MDisks) that
are presented by HP StorageWorks EVA systems as quorum disks.
Copy functions for HP StorageWorks EVA systems
Advanced
copy functions for HP StorageWorks EVA systems (for
example, VSnap and SnapClone) cannot be used with disks that are managed
by
the SAN Volume Controller cluster
because the copy function does not extend to the SAN Volume Controller cache.
Logical unit configuration on the HP EVA
An EVA logical unit is referred to as a virtual disk (VDisk).
An EVA system can support up to 512 VDisks. VDisks are created within
a set of physical disk drives, referred to as a disk group. A VDisk
is striped across all the drives in the group.
Logical unit presentation
A virtual disk (VDisk) must be explicitly presented to
a host before it can be used for I/O operations.
Configuration interface for the HP EVA
The HP EVA is configured, managed, and monitored through a Storage
Management Appliance. The Storage Management Appliance is a server that runs
a software agent called Command View EVA. The Command View EVA is accessed
using a graphical user interface that is provided by a standard Web browser.