We've found that the Vault option will delete the images on Disk ONLY
after ALL Vault jobs have completed. We have 2 Vaults, one is disk to
tape, one is tape to tape. If the tape to tape Vault is running, the
disk to tape Vault will not delete images until the other Vault has
completed. Kinda lame....
Also, in regard to:
"If your Disk fills up before the backups complete does NBU
automatically know to roll those images to tape, or do you have to
manually kick that process off?"
We have the disk to tape Vault configured to run at a very high
frequency (every hour). This and proper sizing for the disk pool have
made so the disk won't get full in the time period configured.
~Kate
Katherine Greenberg
Systems Engineer
Mid-Range Storage Management
Aetna, Inc.
greenbergka AT aetna DOT com
860.636.6724
-----Original Message-----
From: markjessup AT northwesternmutual DOT com
[mailto:markjessup AT northwesternmutual DOT com]
Sent: Monday, September 15, 2003 6:20 PM
To: boatm005 AT groupwise.umn DOT edu; charles.hart AT medtronic DOT com;
rlh AT lsil DOT com; Steve.Jenkins AT SPARROW DOT ORG;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Backing up to disk (and then tape ??)
We are trying use disk units also in conjunction with the Vault option
and what we are seeing is that Vault will expire the images after they
get copied to tape but the actually images do not get deleted then. So
the Vault policy / process is working fine but the cleanup part is not.
Does anyone else have this problem? Is this something we need to
schedule ourselves?
-----Original Message-----
From: charles.hart [SMTP:charles.hart AT medtronic DOT com]
Sent: Monday, September 15, 2003 10:43 AM
To: Steve.Jenkins; boatm005; rlh; veritas-bu
Subject: RE: [Veritas-bu] Backing up to disk (and then tape ??)
If your Disk fills up before the backups complete does NBU automatically
know to roll those images to tape, or do you have to manually kick that
process off?
-----Original Message-----
From: Steve Jenkins [mailto:Steve.Jenkins AT SPARROW DOT ORG]
Sent: Monday, September 15, 2003 10:13 AM
To: boatm005 AT groupwise.umn DOT edu; rlh AT lsil DOT com;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Backing up to disk (and then tape ??)
We back up about 20 percent of our stuff to disk. It's especially
effective for clients connected over a slow link, avoiding tying up a
tape drive for a long period of time.
The basic concept is that we defined a disk storage unit, which is just
a directory on disk somewhere. The images are written as files to this
directory. I have a script that kicks off at the end of the night. It
lists the file names and builds a bpduplicate job that creates two new
copies of each image, copy 2 and 3, making copy 2 the new primary (all
basic options from the admin manual). These two new copies are on
tapes, one to stay in the robot (copy 2), one to go offsite. Once the
duplications are successful, the script runs bpexpdate to expire the
disk image (copy 1).
If througput becomes an issue, I can split it into multiple
bpduplication jobs.
Works pretty slick.
Steve
>>> "Paul Boatman" <boatm005 AT groupwise.umn DOT edu> 9/15/03 10:42:17 AM
>>>
Wow,
Great question. I am interested in this as well. Our robots go widely
un-utilized during the day, and then get maxed out at night during the
backup window. We just don't have the bandwidth to finish everything
during that relatively small backup window. Any increase in performance
makes a HUGE difference for our site.
- Paul
>>> Richard Hellier <rlh AT lsil DOT com> 09/15/03 09:34AM >>>
Folks,
In various recent threads, some people have mentioned using
"backup to disk" (and then (e.g.) dup'ing to tape) as a way of
accelerating backups, getting reduced backup windows etc.
If you are doing this, could I ask you, please, to let me know
some details of what sort of equipment you're using, any gotchas with
this approach?
I'm asking because our current 1.8 Tbyte data volume looks set to
grow to 5-6 Tbyte and I don't think our current approach (ATL P3000 + 5
DLT drives) will scale to that sort of data volume.
This e-mail and its attachments have been scanned for viruses. OIT/NDIS
- University of Minnesota
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