Which two capabilities are provided with the IBM Spectrum Protect incremental forever backup method? (Choose two.)
A . increase the total number of bytes sent to the protect server
B . reduce the time needed to perform a restore of a system
C . reduce the total storage used to save backups of the system
D . provide the ability to use LAN-Free backups
E . perform a point-in-time restore
Answer: BC
Explanation:
C: 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.
B: 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 a result of these advantages, incremental forever is the preferred backup strategy.
References: https://www.ibm.com/support/knowledgecenter/en/SSERB6_8.1.0/ve.hv/ c_ve_hv_bup_incrforever.html