[Veritas-bu] Question posed to ACSLS/STK8500 users.

Hi,

Do you have umount delay set? It takes some time for tapes to travel within
the SL8500, especially if they need to take the elevator.

Do you have the latest microcode/firmware on the drives and the library?

Hampus Lind
Rikspolisstyrelsen
National Police Board
Tel dir: +46 (0)8 - 401 99 43
Tel mob: +46 (0)70 - 217 92 66
E-mail: hampus.lind at rps.police.se


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Fr?n: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] F?r Justin Piszcz
Skickat: den 8 december 2006 17:09
Till: veritas-bu at mailman.eng.auburn.edu
?mne: [Veritas-bu] Question posed to ACSLS/STK8500 users.

All,

My group is setting up two Sun/StorageTek SL8500s.  Sun did the install of 
ACSLS, there were no problems on their side.  Each SL8500 is in its own 
environment.  On each SL8500, we have 8 media servers, connected to four 
drives each, giving us a total of 32 drives.  For testing, I did the 
following.  Ran a NON-MULTIPLEXED backup to each drive, to ensure each 
drive worked properly.  To do this I kicked off four jobs in succession.  
When I do this, I utilize all 4 drives.  I did this with each media server 
without a single problem.  However, when testing everything together, all 
32 drives, I kick off 45 jobs for example.  It says there are 32 active 
jobs in netbackup, which is correct.  The problem is, randomly, 2 or 3 
jobs will hang at "Mounting MediaID.." and then the drive will go down 
after 30 minutes.  Why is this?  With an L700, I can send 500-1000 jobs to 
all of the drives in it and there is never a mounting problem.  There is 
nothing wrong with any of the drives, they are brand new.  I can use ACSLS 
and dismount the media from the drives and then re-run my earlier test 
backups, one at a time to each of the four drives per-media server without 
any issues.  It is only when the robot receives a 'burst' of jobs that 
this happens.

Has anyone experienced anything like this before?

Thanks for any help and responses,

Justin.
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