This strategy provides an easier restore than the full plus incremental backup strategy.
This approach might be useful if your backup window and network capacity can process the backup of all transaction logs that accumulate between full backups. This strategy requires the transfer of only one differential plus the last full backup to accomplish a restore. However, the same amount of data must be transferred in the differential image, as in the series of incremental backups.
Therefore, a full backup plus differential backup policy increases network traffic and Tivoli® Storage Manager storage usage. This policy assumes that the differential backups are processed with the same frequency as the incremental backups.
Carefully consider whether there is sufficient advantage to justify the additional resource necessary to resend all prior transaction logs with each subsequent differential backup.