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Re: [Veritas-bu] Any ACSLS experts in the house?
2010-02-08 12:03:20
I am in the same situation as Dean with regard to the
SL8500. I seem to recall though that ACSLS takes less time for an audit if
the library is put into maintenance mode using ACSLS (vary <acs or
lsm>, diagnostic) before opening the door. I don’t know
whether that is feasible for you or how it will work with the SL8500, but you
might want to give it a try.
Best,
George Herbert
Basline Storage Engineer - Backup
SunTrust Banks, Inc.
Live Solid. Bank Solid.
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu]
On Behalf Of Dean
Sent: Sunday, February 07, 2010 12:01 AM
To: Justin Piszcz; veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Any ACSLS experts in the house?
Jeez, I haven't worked with a
SL8500 - just the old 9310s, but I understand the differences. Does it really
take up to 1.5 hours to audit an LSM? Jeepers! I currently work with a couple
of fully loaded ~2000 slot IBM TS3500s (or whatever the latest designation is),
and I'm sure a full physical inventory doesn't take more than 20 minutes. The
only have one "gripper" too. I've stood there several times and
watched the whole process through the glass panel and I'm quite sure I couldn't
have stood there for 1.5 hours. My attention span is not that long.
I can't help with a script or anything to automate what you want to do. But you
might also want to consider how doing this might affect mount times, if that's
important to you. Depending on which LSM(s) your drives are in, doing this
might cause a lot more pass-thrus; the process where a tape gets passed from
one LSM to another. It was a fairly slow operation, although I'm sure it's been
improved since the 9310 days. But I guess you might have to weigh up what
is more important to you? The time it takes to do a physical inventory, or your
average mount time.
Just some thoughts :)
Cheers
Dean
On Fri, Feb 5, 2010 at 11:17 PM, Justin Piszcz <jpiszcz AT lucidpixels DOT com> wrote:
Hi,
I opened a case with Oracle but thought I would ask here.
If you have an SL8500, it has 4 LSMs.
Example:
1 (2500 slot/filled)
2 (2500 slot/filled)
3 10 tapes
4 10 tapes
If you have LSMs 1,2 filled to capacity.
When the robot does its audit after maintenance (opening doors) the robots
in LSMs 3,4 will finish auditing quickly. Then its another ~1-1.5hrs for
LSMs 1,2.
If they were all equal it would cut audit times dramatically.
Has anyone written a script or have documentation on balancing tapes
between the LSMs?
The firmware at least of 4.14 does not seem to do this for you.
Justin.
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