IBM DS8900F, Introduction And Planning Manual

Page: 91 / 172

can also restore a backup to the source volume or to a different volume. A backup contains the same
metadata as the safeguarded source volume.
Safeguarded Copy can create backups with more frequency and capacity in comparison to FlashCopy
volumes. The creation of safeguarded backups also impacts performance less than the multiple target
volumes that are created by FlashCopy.
With backups that are outside of the production environment, you can use the backups to restore your
environment back to a specified point in time. You can also extract and restore specific data from the
backup or use the backup to diagnose production issues.
You cannot delete a safeguarded source volume before the safeguarded backups are deleted. The
maximum size of a backup is 16 TB.
z/OS Global Mirror
z/OS Global Mirror (previously known as Extended Remote Copy or XRC) provides a long-distance remote
copy solution across two sites for open systems and IBM Z data with asynchronous technology.
z/OS Metro/Global Mirror Incremental Resync
z/OS Metro/Global Mirror Incremental Resync (RMZ) is an enhancement for z/OS Global Mirror. z/OS
Metro/Global Mirror Incremental Resync can eliminate the need for a full copy after a HyperSwap
situation in 3-site z/OS Global Mirror configurations.
The storage system supports z/OS Global Mirror that is a 3-site mirroring solution that uses IBM System
Storage Metro Mirror and z/OS Global Mirror (XRC). The z/OS Metro/Global Mirror Incremental Resync
capability is intended to enhance this solution by enabling resynchronization of data between sites by
using only the changed data from the Metro Mirror target to the z/OS Global Mirror target after a
HyperSwap operation.
Copy Services Manager on the Hardware Management Console license
IBM Copy Services Manager facilitates the use and management of Copy Services functions such as the
remote mirror and copy functions (Metro Mirror and Global Mirror) and the point-in-time function
(FlashCopy). IBM Copy Services Manager is available on the Hardware Management Console (HMC),
which eliminates the need to maintain a separate server for Copy Services functions.
The Copy Services Manager on Hardware Management Console (CSM on HMC) license is available for the
following license scopes: FB and ALL (both FB and CKD).
The CSM on HMC license includes the following feature codes.
Table 40. Copy Services Manager on Hardware Management Console license feature codes
Feature Code Feature code for licensed function indicator
8451 CSM on HMC - active
Chapter 5. Licensed functions 77