Re: [Veritas-bu] Understanding DSSU
2010-09-02 15:44:12
I first did an ls -l and grabbed the
image ID of the images I thought were too old and should have been destaged
and expired off of the DSSU.
I then took those images and ran them
through bpimagelist to see if they had a copy on tape (or if it should
have been expired).
Those that had a copy on tape or should
have been expired were bpexpdate'd.
If you aren't familiar with these commands,
read up on them in the commands guide and do some practicing with them.
Especially with bpexpdate.
Rusty Major, MCSE, BCFP, VCS ▪
Sr. Storage Engineer ▪ SunGard Availability Services ▪ 757 N. Eldridge
Suite 200, Houston TX 77079 ▪ 281-584-4693
Keeping People and Information Connected®
▪ http://availability.sungard.com/
P
Think before you print
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Nate Sanders <sandersn AT dmotorworks DOT com>
09/02/2010 01:40 PM
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| Re: [Veritas-bu] Understanding DSSU |
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Yes I've had my suspicions that there were issues
with images on disk
being moved to tape. How can I ensure they are removed and/or verify
that they are not?
On 09/02/2010 12:24 PM, Rusty.Major AT sungard DOT com wrote:
> It sounds like you have some jobs that are not destaging properly.
I saw this whith 5.1 jobs after I upgraded from 5.1 to 6.5 and had to manually
expire quite a few images from disk (after verifiying we had a copy on
tape, of course).
>
> Rusty Major, MCSE, BCFP, VCS ▪ Sr. Storage Engineer ▪ SunGard
Availability Services ▪ 757 N. Eldridge Suite 200, Houston TX 77079 ▪
281-584-4693
> Keeping People and Information Connected® ▪ http://availability.sungard.com/
> P Think before you print
> CONFIDENTIALITY: This e-mail (including any attachments) may
contain confidential, proprietary and privileged information, and unauthorized
disclosure or use is prohibited. If you received this e-mail in error,
please notify the sender and delete this e-mail from your system.
>
>
> Nate Sanders <sandersn AT dmotorworks DOT com>
> Sent by: <veritas-bu-bounces AT mailman.eng.auburn DOT edu>
>
> 09/02/2010 11:57 AM
> To
> Veritas List <veritas-bu AT mailman.eng.auburn DOT edu>
> cc
> Subject
> [Veritas-bu] Understanding DSSU
>
>
>
>
>
> We finally made it to NBU 6.5.6 and I was under the impression it
had a
> feature that 5.1MP6 did not. I thought that DSSU on 6.5.6 was supposed
> to have the ability to spill over from one storage unit to the next.
> Meaning that if a single job was larger than the smallest DSSU it
could
> overflow into another one. Or, if the if one DSSU only had 300GB free
> and the job was writing there, but was 500GB in total, the last 200GB
> would spill over.
>
> I've been having some really weird problems in DSSU since upgrading.
I
> saw a 20GB job fail 5 times last night. I would flush all 6 DSSUs
and
> rerun the jobs only to watch them all fail with Error 129 (unit is
full).
>
> Here's our setup:
>
> Six 700GB DSSU's
>
> dssu1 & 2 == Storage Group for Production OS backups
> dssu 3, 4, 5 == Oracle Disk Staging
> dssu 6 == Staging Server environment's Disk Staging
>
> All DSSU's are set to 15% low water mark and 90% high water mark.
Some
> flush every 4 hours, some every 5 hours, usually depending on the
> storage group, one will flush 4hrs one will flush 5hrs in the group.
>
> Prior to upgrading to 6.5.6 we only had 4 DSSU's, since then we added
5
> & 6. Despite having more physical space, we're seeing more errors
on
> jobs in Production OS and Oracle. Am I just not understanding something
> here?
>
> --
> Nate Sanders Digital Motorworks
> System Administrator (512) 692 - 1038
>
>
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--
Nate Sanders Digital Motorworks
System Administrator (512) 692 - 1038
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