So, if you turn collocation off will TSM perform better with the VTS?
Will this be a big performance hit on the client restores?
Schaub Joachim
Paul ABX-PROD-ZH To: [EMAIL PROTECTED]
<joachim.schaub@ cc:
ABRAXAS.CH> Subject: AW: Device_Mountlimit_VTS
Sent by: "ADSM:
Dist Stor
Manager"
<[EMAIL PROTECTED]
T.EDU>
04/29/02 09:59
AM
Please respond
to "ADSM: Dist
Stor Manager"
Thank you Bill
we now about the constallation tsm-vts and are on the right evaluation path
now (nativ 3590 drives for tsm?)
with kind regards
Joachim
-----Ursprüngliche Nachricht-----
Von: Bill Boyer [mailto:[EMAIL PROTECTED]]
Gesendet: Montag, 29. April 2002 15:52
An: [EMAIL PROTECTED]
Betreff: Re: Device_Mountlimit_VTS
I've seen TSM use more than the MOUNTLIMIT when high priority tasks need to
be performed. But I question you're use of a VTS for TSM? There was just a
long discussion on this a couple weeks back. Applications that use the
entire media (DISP=MOD) like TSM and DFSMShsm are not really good
candidates
for a VTS. Check out the archives to review the thread.
(http://www.adsm.org) When TSM wants to add on to an existing storage pool
volume, the existing data must be transferred back into cache in the VTS
before it can be appended. Then the 'new' volume has to be staged back to
real 3590 tape. The original location on real 3590 is now unavailable and
needs to be reclaimed. By doing this a lot, you are forcing the VTS to do a
lot of reclamation tasks. Plus the mount wait time to stage the data is
holding you up. Unles you write to a volume and mark it as read-only so TSM
won't try to append to it again.
Bill Boyer
DSS, Inc.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of
Schaub Joachim Paul ABX-PROD-ZH
Sent: Monday, April 29, 2002 4:06 AM
To: [EMAIL PROTECTED]
Subject: Device_Mountlimit_VTS
Dear *SM Gurus
Our VTS has 64 logical drives, the mountlimit in this deviceclass is set to
38 in the TSM Server. Last Week i saw in the Mainvew Monitor an usage off
50
logical drives by TSM ! Is it possible to user more mountpoints, as they
are
defined by teh mountlimit?
Env: TSM Server 4.2.1.9 OS/390
Thanks in advance
Joachim
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Joachim Paul Schaub
Abraxas Informatik AG
Beckenhofstrasse 23
CH-8090 Z|rich
Schweiz / Switzerland
Telefon: +41 (01) 259 34 41
Telefax: +41 (01) 259 42 82
E-Mail: mailto:[EMAIL PROTECTED]
Internet: http://www.abraxas.ch
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
