Create Logical Drive Copies; Introduction To Volumecopy - IBM DS3000 Introduction And Implementation Manual

7065Admin_Configure.fm

8.5 Create Logical Drive Copies

The VolumeCopy premium feature copies data from one logical drive (source) to another
logical drive (target) in a single storage subsystem. The target logical drive is an exact copy or
clone
of the source logical drive. VolumeCopy can be used to copy data from arrays that use
smaller capacity drives to arrays that use larger capacity drives, to backup data, or to restore
FlashCopy logical drive data to the base logical drive. The VolumeCopy premium feature
includes a Create Copy Wizard, to assist in creating a logical drive copy, and a Copy
Manager, to monitor logical drive copies after they have been created. See 10.3.6, "Manage
Logical Drive Copies" on page 235 for information on Copy Manager.

8.5.1 Introduction to VolumeCopy

The VolumeCopy premium feature must be enabled by purchasing a feature key. FlashCopy
must be installed as well. VolumeCopy is only available as a bundle that includes a FlashCopy
license.
VolumeCopy is a full point-in-time replication (Figure 8-67). It allows for analysis, mining, and
testing of data without any degradation of the production logical drive performance. It also
improve backup and restore operations, making them faster and eliminating I/O contention on
the primary (source) logical drive.
Figure 8-67 VolumeCopy
To create a VolumeCopy request, specify two compatible volumes (logical drives). One logical
drive is designated as the source, and the other is the target.
Copying data is a background operation managed by the controller firmware, which reads the
source logical drive and writes the data to the target logical drive. If the storage system
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IBM System Storage DS3000: Introduction and Implementation Guide
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Production
Server
PiT
Standard
Clone
Logical
Drive
DS3000 Subsystem
Training
Server
Volume
Copy