We have different media servers seeing different drives with 3.4 and now
4.5 with no issues. (Well no issue with that bit anyway).
You mention tapes being mounted in the wrong drive - this is normally due
to the ACS (I'm assuming acs as you mention 9840) definition not matching
the drive. This can be caused by tape drives moving device after a reboot
which can happen with san's. Use persistent binding if you can and only
zone what you need to the host and you can have as many or as few drives as
you like.
Ed
Mark.Snow AT aseriti DOT [email protected] on 27/04/2004 08:23:32
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu
To: veritas-bu AT mailman.eng.auburn DOT edu
cc:
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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