Re: LTO strange behaviour
2002-02-13 11:16:17
Richard,
Are you using all the 8 drives of LTO? When the backup is running you type q
mount, how many drives you see mounted?
On init<SID>.utl, which values are you using for multiplex and maxsessions?
On gigabit ethernet, are you using jumb frames?
On iostat how's the tm-act column?
Regards,
Anderson
> It's not an SSA array, it's a JBOD in mirror.
> I can't give you more machine details alas (customer confidential). The
only details I can give you are:
>
> RS/6000 model F80
> 2 CPU
> 1 GB memory
> SAP DB size 100GB on SSA disks (JBOD with mirroring)
> 3584 LTO with 8 LVD drives
> TSM server 4.2.1.8
> TSM client 4.2.1.15
> TDP for R/3 3.2.0.6
>
> Richard.
>
> -----Original Message-----
> From: James Thompson [mailto:mezron AT HOTMAIL DOT COM]
> Sent: Wednesday, February 13, 2002 4:30 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: LTO strange behaviour
>
>
> You mention 20 MB/sec and that the SAP database is on an SSA array. Well
> some SSA array's have a maximum throughput of 20 MB/sec. This depends on
the
> adapter, and how you have the SSA array configured.
> It would be nice to get the machines hardware configuration more
completely.
>
> Also have you benchmarked your SSA array to see what maximum throughput it
> can sustain. If you are running 8 streams of backup through one SSA
> adapter, you could run into contention.
>
> James Thompson
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at
http://explorer.msn.com/intl.asp.
>
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- Re: LTO strange behaviour, Mike Swinhoe
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- Re: LTO strange behaviour, James Thompson
- Re: LTO strange behaviour, Denzel, Richard van
- Re: LTO strange behaviour, Kauffman, Tom
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- Re: LTO strange behaviour, James Thompson
- Re: LTO strange behaviour, Denzel, Richard van
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Anderson F. Nobre <=
- Re: LTO strange behaviour, Mike Swinhoe [mailto:mike.swinhoe
- Re: LTO strange behaviour, James Thompson [mailto:mezron
- Re: LTO strange behaviour, Kauffman , Tom [mailto:KauffmanT
- Re: LTO strange behaviour, James Thompson [mailto:mezron
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