We believe that our issue does lie with the driver on each individual platform.
We think the IBM atdd driver will work for HP and seems to be supported by
Veritas, but it is not supported for the Sun platform. What I would like to
know from anyone using Solaris 9 media servers with IBM LTO2
Title: Message
Although the spec is the same, do any of the netbackup
logs show why compression may not be running?
Regards
Simon Weaver3rd Line Technical SupportWindows
Domain Administrator
EADS Astrium
Limited, B32AA IM (DCS)Anchorage Road, Portsmouth, PO3
5PU
Email:
[EMAIL PROTECTED]
-
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On Behalf Of WEAVER, Simon
Sent: 18 April 2006 10:04
To: 'Carlisle, D Renee';
veritas-bu@mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Hardware
compression not working
Although the spec is the same, do any of the
netbackup logs show why
:57To: Whelan, Patrick;
veritas-bu@mailman.eng.auburn.eduSubject: RE: [Veritas-bu] Hardware
compression not working
LTO 1
tapes are filling up at about 100 gig of data and LTO 2 tapes are filling up at
200 Gig of data. In our STK environment close to 200 gig on our LTO1 tapes
in the STK
Date: Tue, 18 Apr 2006 10:42:58 -0400
From: Carlisle, D Renee [EMAIL PROTECTED]
I checked all that and it looks good=2E Sg=2Econf is
identical, major numb=
ers and minor number convention on the HP looks the same
(they don't exist =
on sun) no mention of compression or errors in
(w)
585-472-2360 (c)
-Original Message-
From: bob944 [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 18, 2006 11:20 AM
To: veritas-bu@mailman.eng.auburn.edu
Cc: Carlisle, D Renee
Subject: RE: RE: [Veritas-bu] Hardware compression not working
Date: Tue, 18 Apr 2006 10:42:58 -0400
From
Some drives can have the compression turned on by a drive setting so
that it uses compression, regardless. Did any of your drive settings
change?
I agree with a previous poster in that you should do some kind of a test
to determine how much data is being written to a tape before it moves on
One other thing to keep in mind is that once a tape is written to with
compression off, the drive will default to compression off when that tape is
loaded. It will require a format of a tape (I.E. !! at BOT with a cbn device
driver) to clear this condition and allow the tape to use compression.
You can get good test programs and test data file generation from the HP
web site.
http://h2.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=lpg50460locale=en_US
Look for 'hptapeperf' and 'hpcreatedata' - the latter can produce specific
compressibility levels of the data.
That
To: [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu
Subject: RE: RE: [Veritas-bu] Hardware compression not working
I answered the compression issue in a previous post, we definitely are not
getting compression. The reason I mentioned the library is that it does not
seem to be at the hardware
To: Jeff Lightner; [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu
Subject: RE: RE: [Veritas-bu] Hardware compression not working
We are using BEST on HP, we have done numerous testing with new tapes and
consistent data and compression has not been working since we switched over to
the IBM
To: Jeff Lightner; [EMAIL PROTECTED]; veritas-bu@mailman.eng.auburn.edu
Subject: RE: RE: [Veritas-bu] Hardware compression not working
We are using BEST on HP, we have done numerous testing with new tapes and
consistent data and compression has not been working since we switched over to
the IBM library
Tape Library: IBM 3584 partitioned into production and test
environment
Operating System: Solaris 9, Windows 2003, HP-UX 11i
Netbackup: 5.1 mp3
Just upgraded from STK L700E LTO-1 library to a IBM 3584 LTO-2 library
All of a sudden tape compression is not working on any flavor
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