so you have 6 virtual robots, with 20 drives each, or 120 drives.
How are the drives provisioned?
I assume your VTL has the 120 drives shared out of 2, 4, 6 HBA ports, and the
drives appear as 20-60 LUNs per HBA.
are you using LUN masking on the hosts to allow them to see a fixed number of
drives each?
if you're just using basic zoning, one of your media servers might be reserving
the entire "port", so other media servers zoned to the same port cannot run any
backups, hence its jobs queue...
It doesn't sound like an obvious misconfiguration.
Paul
--
-----Original Message-----
From: Kevin Whittaker [mailto:Kevin.Whittaker at syniverse.com]
Sent: March 5, 2007 11:53 AM
To: Paul Keating; veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] NB Enterprise Server 5.1 MP3 - Jobs are
queuing
At the times I see this, vaulting is not running.
As for the Virtual Robot, they are controlled by the master server, and
I allocated the drives to each media server as I needed them and I am not
sharing them.
Kevin
_____
From: Paul Keating [mailto:pkeating at bank-banque-canada.ca]
Sent: Monday, March 05, 2007 11:49 AM
To: Kevin Whittaker; veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] NB Enterprise Server 5.1 MP3 - Jobs are
queuing
Is the problem during vaulting or during backup?
How are you sharing the 6 virtual robots among the 32 media servers?
Paul
--
-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Kevin
Whittaker
Sent: March 5, 2007 10:25 AM
To: veritas-bu at mailman.eng.auburn.edu
Subject: [Veritas-bu] NB Enterprise Server 5.1 MP3 - Jobs are
queuing
Ok, Let me see if I can explain. I have a L700E with 11 Tape
drives. We recently purchased a EMC CDL720 (Virtual Tape Drive Unit), which I
can configure as multiple virtual robots. I have configured 6 L700 silos with
20 drives in each robot. I have been spreading them over the 32 media servers
that I currently have. Well, the master server I have does all my vaulting, so
I have configured 4 tape drives from each of the 6 virtual silos. One of the
main reasons for this new VTL is I am running out tape drive resources over the
weekends, and figured having 24 tape drives it would help resolve it.
Let's first start with.... Yes, I have tested the Virtual silos
and they do perform backups and restores. So when I move the backups to the
silos, they don't all run at the same time. I notice that the jobs are
queuing, and there are available tape drives?!?
I checked with VERITAS and they say there is no license that
would stop me from running a certain amount of backups at a time.
Kevin Whittaker
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