[Fwd: [Veritas-bu] NetApp backups and multi drives]
2001-09-17 16:40:22
Subject: |
[Fwd: [Veritas-bu] NetApp backups and multi drives] |
From: |
jlkennedy AT amcc DOT com (Jeff Kennedy) |
Date: |
Mon, 17 Sep 2001 13:40:22 -0700 |
I guess that's the question, does it need to lock the drive if no other
filer is trying to access it? I'm thinking along these lines:
filer1 - 6 drives configured for nrst0a thru nrst5a
filer2 - same
I can load a tape into each of the drives and each filer will see it (mt
-f nrstxa status), so every filer sees every drive already.
So, if filer1 is backing up to all 6 drives, and filer2 is not trying to
backup anything, filer1 would use all 6 successfully. When filer1 was
finished filer2 could use the same 6 drives as long as filer1 was not
trying to access those drives.
Is this incorrect?
~JK
"Trotman, Kevin" wrote:
>
> You'd have better luck with a $20 dollar bill in Vegas. ;)
>
> Can you even configure two media servers that are pointed to the same robot
> drive? I didn't think this was possible without multi-hosted drive support
> (SSO). If you make it a multi-hosted drive, then its not gonna be able to
> lock the drive for Netapp anyway (not supported with SSO).
>
> Kevin Trotman
> Storage Management Group
> Phone: 817-317-8048
> Cell: 817-307-0451
> email: Kevin_Trotman AT afcc DOT com
> (Trotman, Kevin)
>
> -----Original Message-----
> From: Jeff Kennedy [mailto:jlkennedy AT amcc DOT com]
> Sent: Monday, September 17, 2001 1:57 PM
> To: kas AT veritas DOT com
> Cc: Veritas-bu List
> Subject: Re: [Fwd: [Veritas-bu] NetApp backups and multi drives]
>
> I understand that SSO is not available from Veritas for ndmp yet, this
> is technically not SSO. Netapp filers see all the tape drives attached
> to the library anyway, whether you configure them in NBU or not. So the
> question is this: Can I configure NBU to see all drives for all filers?
>
> The only issue I can come up with is if NBU causes the filer to
> periodically go out and check the drive status. If that's the case then
> it could be problematic to have several filers checking drive status on
> the same drive at the same time. However, if NBU does not cause that,
> then a filer could use all the drives it is configured for in NBU as
> long as no backup overlaps.
>
> Anyone see another issue with this scenario?
>
> Thanks.
>
> ~JK
>
> Karen Schoenbauer wrote:
> >
> > It looks like he is trying to do SSO for NDMP. SSO does not support NDMP
> > attached drives.
> >
> > > -----Original Message-----
> > > From: veritas-bu-admin AT mailman.eng.auburn DOT edu
> > > [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Jeff
> > > Kennedy
> > > Sent: Friday, September 14, 2001 1:22 PM
> > > To: Veritas-bu List
> > > Subject: [Fwd: [Veritas-bu] NetApp backups and multi drives]
> > >
> > >
> > > No respondees so far. Is everyone waiting for a summary or is noone
> > > doing this at all?
> > >
> > > Jeff Kennedy wrote:
> > > >
> > > > I have 4 filers connected via fiber channel to an ATL P6000. There
> are
> > > > 5 drives dedicated to ndmp, 1 drive per filer for the first 3 filers
> and
> > > > the 4th has 2. Each filer sees all the drives but only one (or 2)
> > > > drives are configured in NetBackup for each filer.
> > > >
> > > > Question:
> > > >
> > > > Why can't I configure NetBackup for 4 drives per filer
> > > as long as they
> > > > never backup at the same time?
> > > >
> > > > I know DDA for ndmp is not available but I wonder if the above would
> > > > work since the filers all see the other drives anyway.
> > > >
> > > > I am running Ontap 6.x, qlogic fcal cards, Vixel fiber switch to
> P6000.
> > > >
> > > > Thanks.
> > >
> > > --
> > > =====================
> > > Jeff Kennedy
> > > Unix Administrator
> > > AMCC
> > > jlkennedy AT amcc DOT com
> > > _______________________________________________
> > > Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> > > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> > >
>
> --
> =====================
> Jeff Kennedy
> Unix Administrator
> AMCC
> jlkennedy AT amcc DOT com
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
--
=====================
Jeff Kennedy
Unix Administrator
AMCC
jlkennedy AT amcc DOT com
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