3.1.2 Matrix Server Administration Guide

Manage Hardware Snapshots

Matrix Server provides support for taking hardware snapshots of PSFS

filesystems. The subdevices on which the filesystems are located must

reside on one or more storage arrays that are supported for snapshots.

Snapshot support can be configured either on the Management Console

“Configure Matrix” window or via the mxconfig utility. (See the

PolyServe Matrix Server Installation Guide for more information.) This

procedure creates a snapshot configuration file on each server.

NOTE: Currently, hardware snapshots are supported only on Hewlett-

Packard StorageWorks Enterprise Virtual Array (EVA) storage

arrays. The latest version of the HP StorageWorks Scripting

System Utility (SSSU) must be installed on all servers in the

cluster in order for HP EVA snapshots to work. To locate this

utility, go to

www.hp.com, select Software & Driver Downloads,

and search for “HP StorageWorks Command View EVA

Software.” Choose the latest media kit version, and select the

correct version for your OS. The current media kit version is v4.1.

The utility must be renamed, or linked, to /usr/sbin/sssu, and must

be executable by all users.

Create a Snapshot or Snapclone

A snapshot is a space-efficient reflection of a source filesystem at a

particular point in time. Snapshots initially consume storage space only

to store pointers to the data in the source filesystem, growing in size