savegrp -O. That's how we do it if the environment is large enough.  The
way I decide to do it that way or not is how many tapes a Full backup
requires, since the worst case scenario is that a index rebuild will
require scanning (probably) all those tapes for index chunks.  If this
number is 10 or less tapes, I don't do savegrp -O and save indexes along
with the savesets.  I'm willing to wait for these tapes to load and
scan.  But where it's much more than 10 tapes, it would take days to
scan all the tapes!  Compare this to scanning one index tape start to
finish.

As long as you have the index somplace, there's no scanner commands at
all, just nsrck -L7

Also, you have explicit control over the expiration this way - at the
cost of making client resources for the SGO group(s), or using
group/pool settings if your version supports them.  So we have 2 SGO
client resources for each client, one for dailies which last a week, and
another for offsite fulls, which match that retention.

HTH
Jerry

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On
Behalf Of MIchael Leone
Sent: Wednesday, April 09, 2008 9:46 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] To index save or not?


So all of my backup jobs have "No index save" set as an option; this was

apparently done under advice of EMC, when they originally set us up.
Now, 
I can understand the reasoning for a separate Bootstrap group and
separate 
tape; this facilitates ease of DR recovery, so I can get back all of my 
clients at once (I think). But why would I *not* want to save the index 
with each backup job? Wouldn't having the index make
restoring/recovering 
from tape easier? i.e., it's easier to do a "scanner -m" rather than 
having to do a more time-consuming "scanner -i".

So I'm thinking of changing my job definitions to remove the "No index 
save", but also keep my separate Bootstrap group, tape and scheduled job

to run the "savegrp -O" every morning.

Thoughts? Good idea? Best practice? Waste of time? etc

Thanks

-- 
Michael Leone
Network Administrator, ISM
Philadelphia Housing Authority
2500 Jackson St
Philadelphia, PA 19145
Tel:  215-684-4180
Cell: 215-252-0143
<mailto:michael.leone AT pha.phila DOT gov>

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