An incremental forever backup strategy minimizes backup
windows while providing faster recovery of your data.
Data Protection for VMware provides
a backup strategy called incremental forever. Rather than scheduling
weekly (periodic) full backups, this backup solution requires only
one initial full backup. Afterward, an ongoing (forever) sequence
of incremental backups occurs. The incremental forever backup solution
provides these advantages:
- Reduces the amount of data that goes across the network.
- Reduces data growth because all incremental backups
contain only the blocks that changed since the previous backup.
- No comparison with the backup target is needed since only changed
blocks are identified.
- Minimizes impact to the client system.
- Reduces the length of the backup window.
- No need to schedule an initial full backup as a
separate schedule: the first issue of an incremental forever backup
automatically defaults to an incremental forever full backup.
In addition, the restore process is optimized, as only the latest
versions of blocks that belong to a restored backup are restored.
Since the same area on the production disk is recovered only one time,
the same block is not written to multiple times as implemented in
prior versions of
Data Protection for VMware. As a
result of these advantages, incremental forever is the preferred backup
strategy. However, if your backup solution requires long-term storage
or tape retention of your data, consider the tasks described in
Periodic full backup strategy.
Figure 1. A comparison of both backup strategies
Restriction: Data Protection for VMware support
for VM backup and restore operations is limited to VM names and
datacenter names
that contain only English 7-bit ASCII characters. You cannot use VM
names and
datacenter names
that use other language characters. Additional character restrictions
are listed in
Unsupported characters in VM or datacenter name.