Owner manual

Using The Virtual Disk Copy Feature

This chapter describes how the Virtual Disk Copy feature works, lists the script commands for Virtual Disk Copy, and

explains how to use the commands to create and run Virtual Disk Copy. Additional information about Virtual Disk Copy

and related definitions is available in the online help, the

Deployment Guide

, the

MD Storage Manager online help

, and

the

Administrator's Guide

NOTE: If you ordered Premium Features for Virtual Disk Copy, you received a Premium Features Activation card

shipped in the same box as your Dell PowerVault MD storage array. Follow the directions on the card to obtain a

key file and to enable the feature. For more information, see "Premium Feature — Virtual Disk Copy" in the

Owner's

Manual

The Virtual Disk Copy feature enables you to copy data from one virtual disk (the source) to another virtual disk (the

target) in a single storage array. You can use this feature to perform the following functions:

• Back up data.

• Copy data from disk groups that use smaller capacity physical disks to disk groups using larger capacity

physical disks.

• Restore snapshot virtual disk data to the associated source virtual disk.

• Copy data from a thin virtual disk to a standard virtual disk on the same storage array.

NOTE: You cannot copy data from a standard virtual disk to a thin virtual disk.

About Virtual Disk Copy

Starting a virtual disk copy operation does the following to your target copy disks:

• Overwrites all existing data on the target virtual disk.

• Makes the target virtual disk read-only to hosts.

• Fails all snapshot (legacy) virtual disks or snapshot image virtual disks associated with the target virtual disk.

If you have data stored on a virtual disk you specify as a virtual disk copy target, make sure you no longer need the data

or have it backed up before beginning virtual disk copy.

Virtual Disk Copy Types

The Virtual Disk Copy script commands create one of following types of virtual disk copies:

• A virtual disk copy using a snapshot (legacy), which suspends I/O to the source virtual disk while the copy is in

progress. The source virtual disk will not be available during the copy operation. This is called an offline virtual

disk copy.

• A virtual disk copy using a point-in-time copy of any virtual disk, while still allowing access to the source virtual

disk when the copy is in progress. This is called an online virtual disk copy.

In either type of virtual disk copy, the target virtual disk is locked and cannot be accessed while the copy operation is in

place.