Re: [Veritas-bu] multipathing with tapes on Linux?
2011-07-27 17:03:58
David,
I think the answer depends on what you mean by multi-pathing, and the maker of
the tape drive.
The new IBM tape drives include two ports. But I think that it is only for
failover. And I suspect that the support would only be in the IBM tape driver.
Which was released with it's source code the last I looked.
I also suspect that you do not need multi-pathing to feed the tape drives. The
native speed for a lto-5 tape drive is greater than that of a gige card. And
if you send data that can be compressed 2-1 or 3-1 then even more so.
The hard part is getting the data off the disk fast enough to drive the tape
drive.
len
-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of David
Magda
Sent: Wednesday, July 27, 2011 4:45 PM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] multipathing with tapes on Linux?
Hey,
Anyone know if Linux (specifically RHEL 5.x) supports multi-pathing to tapes?
Is it worth setting up a media server with a 10 GigE interface and two (or
more) FC connections on the other?
AFAICT, the "device-mapper-multipath" only support MPIO for block devices.
Is this assessment correct?
Thanks for any info.
Regards,
David
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