Hi Chris, 

The only real problem to switching to differential incrementals vs.
cumulative incrementals is management of tape resources. If you have all of
the tapes stored in the library all of the time, I say switch to
differential. If you are constantly swapping tapes in and out, you may end
up doing extensive management as you could end up having to put way too many
tapes back into the library to do a simple restore. 

In a nutshell, if all tapes are in the library all the time, NetBackup will
use them one by one for a restore. Otherwise, you start a restore, then find
out which tapes need to be added, then find them and add them. Management
pain in the butt. 

Have fun. 

d. 

_____ 
dave high
VERITAS Enterprise Consulting
Bay Area Region
702-683-7733
 
"Unix IS user friendly, it is just VERY picky who it chooses as friends" 

-----Original Message-----
From: Christopher Manders [mailto:CJManders AT lbl DOT gov] 
Sent: Tuesday, May 28, 2002 4:16 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Schedules Question.

Hi,

So, we have been looking at how we were implemented, as we are starting to
use
_alot_ of tapes.

Basically, what we have is:
Daily-Differentials
Weekly-Cumulative Incrementals
Monthly -Fulls

Is there a real advantage to having weekly cumulatives, as our customers,
who
we have to charge, complain about the extra tape usage?

Basically, we could really use the saved tapes. But, I wanted other people's
experiences before I decided.

Thanks for any input or suggestions.


Chris

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