Dell CX4 manual Optional Storage Features, MirrorView, SnapView, SAN Copy, Assigning LUNs to Hosts

Assigning LUNs to Hosts

If you have Access Control enabled in Navisphere Manager, you must create storage groups and assign LUNs to the proper host systems.

Optional Storage Features

Your Dell/EMC CX4-series storage array may be configured to provide optional features that can be used in conjunction with your cluster. These features include MirrorView, SnapView, and SANCopy.

MirrorView

MirrorView automatically duplicates primary storage system data from a cluster or stand-alone system to a secondary storage system. It can be used in conjunction with SnapView and is managed from within Navisphere Manager.

SnapView

SnapView captures images of a LUN and retains the images independently of subsequent changes to the files. The images can be used to share LUNs with another system without affecting the contents of the source LUN.

SnapView creates copies of LUNs using either snapshots or clones. Snapshots are virtual copies that create an image of the source LUN at the time the snapshot was created. This snapshot is retained independently of subsequent changes to the source LUN. Clones are duplicate copies of a source LUN. You can use snapshots and clones to facilitate backups or to allow multiple hosts to access data without affecting the contents of the source LUN.

The source LUN and each snapshot or clone must be accessed from a different host or a different cluster.

SnapView, which is installed on the storage processors as a non-disruptive upgrade, can be used in conjunction with MirrorView and is managed from within Navisphere Manager.

SAN Copy

SAN Copy allows you to move data between storage systems without using host processor cycles or LAN bandwidth. It can be used in conjunction with SnapView or MirrorView and is managed from within Navisphere Manager.

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Preparing Your Systems for Clustering