IBM DS8882F, Introduction And Planning Manual, Page: 59 / 164

Note: The storage system supports Incremental FlashCopy and Metro Global
Mirror Incremental Resync on the same volume.
Safeguarded Copy
The Safeguarded Copy feature creates safeguarded backups that are not accessible
by the host system and protects these backups from corruption that can occur in
the production environment. You can define a Safeguarded Copy schedule to create
multiple backups on a regular basis, such as hourly or daily. You 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.
Copy Services Manager (available on the Hardware Management Console) is
required to facilitate the use and management of Safeguarded Copy functions.
Remote mirror and copy
The remote mirror and copy feature is a flexible data mirroring technology that
allows replication between a source volume and a target volume on one or two
disk storage systems. You can also issue remote mirror and copy operations to a
group of source volumes on one logical subsystem (LSS) and a group of target
Local Storage Server Remote Storage Server
Local A
Local B
Remote B
FlashCopy
f2c01089
Remote A
full duplex
Establish
FlashCopy
full duplex
Metro Mirror
Figure 5. Remote Pair FlashCopy
Chapter 3. Data management features
49