try using windows "NT Backup"
program or use Linux or cygwin for tar or dd.
Good luck though, I have tried various
things from drivers to buffer settings on Windows and can't get higher
than ~25MB/sec, even when doing a BCV backup up to CDL.
I think it maybe its the x86 hardware
(no such problems on Solaris and AIX)? I did a dual boot with Windows
and Linux and a standalone LTO3 drive and I got the same (~20MB/sec) performance
on both.
Jared M. Seaton
Recovery Administrator
Mylan Inc.
304-554-5926
304-685-1389 (Cell)
"Ed Scheef" <cxscheef AT tecoenergy DOT com>
Sent by: veritas-bu-bounces AT mailman.eng.auburn DOT edu
01/16/2008 02:37 PM
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Subject
| [Veritas-bu] LTO3 tape drive Performance
testing tools |
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Folks,
We have recently installed LTO3 tape drives in an
L1400 tape
library (for netbackup use). Tape drives are driven
by
Windows 2003 servers.
Using Netbackup, we are not getting the throughput
expected.
We're getting 8-25mb/sec where we should be seeing
60-80mb/sec.
Is there a utility or a method available which
we could use to
test direct write performance from Windows 2003
OS level
directly to the LTO3 tapes drives, keeping Netbackup
out of
the picture ?? This would help tell
the tale if Netbackup is
the bottleneck or whether it is something else.
Responses are appreciated.
Thanks Much,
Ed Scheef
TECO Energy, Inc. - Tampa_______________________________________________
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