Did you up your NBU buffer settings to
account for the increased performance of LTO-4?
You can check this technote to determine
which settings to check and if your media server has enough resources to push
these upgraded drives:
http://seer.entsupport.symantec.com/docs/183702.htm
I’ve heard that 1MB is useful for
the buffer size (1048576) but you’ll need to test to really nail it down.
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Esson, Paul
Sent: Wednesday, April 09, 2008
09:43
To:
veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] LTO-4 on
Linux
Folks,
Has anybody out there
configured LTO-4 drives on Linux Red Hat ES 4? I recently swapped out a pair
of LTO-2 drives for LTO-4 drives on a v5.1 Media Server and have seen no
throughput performance improvement. I did the same test on a Windows 2003
Server using the same data and saw significant improvement, but the Windows OS
has a specific driver for the LTO-4. Linux uses the mt driver, but I
can’t see anything on the web specifically about tuning the mt driver for
LTO-4.
Regards,
Paul Esson
Redstor Limited
Direct:
+44
(0) 1224 595381
Mobile: +44 (0)
7766 906514
E-Mail:
paul.esson AT redstor DOT com
Web:
www.redstor.com
REDSTOR LIMITED
Torridon House
73-75 Regent Quay
Aberdeen
UK
AB11 5AR
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