Hi Mark,
Ed's right on the money here.
I have the exact same setup here (except more drives and two sites). Just
don't let the Media Servers even glimpse the
new drives until you are ready to add them into SSO for a particular media
server. Either via zoning or mapping them in Emulex/JNI/anotherHBA.
I have 35 Media Servers (don't ask) and adding a new tape drive takes
forever. So we try not to 1) add any more drives or 2) (worse) add any more
Media Servers.
The issue here is that 33 of the Media Servers are also production
application servers and only back themselves up - so it's a bit of a
nightmare really.
Still, as I was told some years ago, if you can't take a joke, you shouldn't
have signed up....
Cheers - Tim
Tim Biller
Senior Support Analyst
Storage Management Team - Technology Services
experian
Abbey House,
Abbeyfield Road,
Nottingham,
NG80 1AH
Tel: +44 (0) 115 964 3097
Cell: +44 (0) 7740 191329
Fax: +44 (0) 115 964 3549
tim.biller AT uk.experian DOT com
To: veritas-bu AT mailman.eng.auburn DOT edu
From: Mark.Snow AT aseriti DOT com
Date: Tue, 27 Apr 2004 08:23:32 +0100
Subject: [Veritas-bu] NBU 4.5 SSO environment question
Has anyone seen this problem before?
Env= NBU 4.5 FP5, Solaris8 master, solaris, NT, W2K, HP-UX 11 media servers
and clients
We are currently looking at the best way to implement an additional 5 x
9840 drives into our tape SAN (currently has 4 drives), the process would
be as below:
1. Install the 5x9840 drives
2. Configure the new drives at the OS and in Netbackup to an exisiting
media server, so that server can see all drives (9 in total)
3. Test new drives are working correctly on that one server
4. Over a set period configure the new 5 drives to each of the media
servers, so eventually all media servers can see all 9 drives
Before step 4 is fully completed there will be a point where only some
media servers can see all the drives, would this cause a problem for the
media servers that cannot see all the drives. It has been seen in our old
Tape SAN that if some media servers can see only some of the drives in an
SSO environment, then this causes these servers problems, such as mounting
tapes on the wrong drives and downing drives. This problem was seen using
netbackup 3.4.
Has anyone had any experience of similiar problems, or any comments would
be welcomed
Thanks
Mark Snow
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