One more q

[William_Lawance]

One more question, once data is required to restore.

There is only one drive in my backup library.

How do differential backup data restore ? Since can't insert both full and differential backup tape to library.

Or just insert differential backup tape is ok ?

Thanks !

[CraigV]

...you need both tapes to do a complete DIFF restore (FULL + DIFF), but only the DIFF to do a file-level restore of changed files since the previous FULL.

Thanks!

[William_Lawance]

Hi,

May be let me introduce my environment.​

There are 3 set tapes for backup and rotate every week on Monday.

Tape 1 (Week 1)

• Mon to Sat Differential backup (Week 1)
• Sun Full backup (Week 2)

Tape 2 (Week 2)

• Mon to Sat Differential backup (Week 2)
• Sun Full backup (Week 3)

Tape 3 (Week 3)

• Mon to Sat Differential backup (Week 3)
• Sun Full backup (Week 4)

Tape 1 (Week 4)

• Mon to Sat Differential backup (Week 4)
• Sun Full backup (Week 5)

​** Rotate backup tape (Every Monday)

====================================

If I need to restore file on Tape 2 (Week 2), for example on Wednesday.

• I have to insert both Tape 1 (Week 1) and Tape 2 (Week 2) into tape library and do restore ?

Thanks !

[CraigV]

Should only be the second tape unless you're restoring all the data.

[William_Lawance]

Hi,

Yes, only 2nd tape is in tape library.

If restoring data, then both tape have to insert to library ? Any slot is ok ?

Thanks

[CraigV]

Yes, as long as you Inventory/Scan the slots. Otherwise crate an Import job and BE will be made aware of the tape.