Very slow certance lto-2 ultrium

[Marcio Jacson Santos]

I have the same problem with my lto-2 ultrium, very slow 2.4mb/s

I using debian etch

Wait for return,

Marcio

2008/7/10 Justin Zygmont <justin.zygmont at phyworks-ic.com>:

>
>
> -----Original Message-----
> From: linux-poweredge-bounces at dell.com
> [mailto:linux-poweredge-bounces at dell.com] On Behalf Of John Schleigh
> Sent: 09 July 2008 19:54
> To: linux-poweredge at dell.com
> Subject: Very slow certance lto-2 ultrium
>
> I have seen some mention of this, but no solutions yet.
>
> Can someone help me to understand what I need to do to get better than
> 2.7Mb/s
> transfer rate on this Certance Ultrium 2 tape drive?  It should be able
> to
> get closer to 20Mb/s.
>
> I have been guessing that I need to set the right blocking factor or
> something, but I really don't know.  I have tried piping tar to mbuffer,
>
> large block sizes, small block sizes.  Regardless, my shoes are very
> shiny.
>
> # mt -f /dev/nst0 status
> drive type = Generic SCSI-2 tape
> drive status = 1107296256
> sense key error = 0
> residue count = 0
> file number = 0
> block number = 0
> Tape block size 0 bytes. Density code 0x42 (unknown).
> Soft error count since last status=0
> General status bits on (41010000):
>  BOT ONLINE IM_REP_EN
>
> Linux pe2900 2.6.16.46-0.12-smp #1 SMP Thu May 17 14:00:09 UTC 2007
> x86_64
> SLES 10
>
>
> I have the same hardware, and get high transfer rates...
>
> # mt -f /dev/nst0 status
>
> SCSI 2 tape drive:
> File number=-1, block number=-1, partition=0.
> Tape block size 0 bytes. Density code 0x0 (default).
> Soft error count since last status=0
> General status bits on (50000):
>  DR_OPEN IM_REP_EN
>
>
> I am using RHEL5 however,
>
>
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>



-- 
Marcio Jacson dos Santos
www.informatech.com.br
Informatech Informática Ltda.
Fone (47) 30263236
Mobile (47) 91783841

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