So what happens on the drive side if I have MPX set to 3 and then start a
backup of 2 clients that can push data fast and 1 client that are really
slow?
Is it the slow client that decide the speed of the drive then and make it
stop/rewind/paus etc. and the other clients have to wait for the slower one?
Thanks and regards,
Hampus Lind
Rikspolisstyrelsen
National Police Board
Tel dir: +46 (0)8 - 401 99 43
Tel mob: +46 (0)70 - 217 92 66
E-mail: hampus.lind at rps.police.se
-----Ursprungligt meddelande-----
Fr?n: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] F?r Justin Piszcz
Skickat: den 25 november 2006 14:45
Till: WEAVER, Simon
Kopia: veritas-bu at mailman.eng.auburn.edu; 'Paul Keating'
?mne: Re: [Veritas-bu] LTO-3 and MPX
Simon, do benchmarking with the same fileset for MPX=1,2,3,4,5,6,.. etc.
I found MPX=3 to offer the best speeds for both backup & restore (for big
files).
Justin.
On Sat, 25 Nov 2006, WEAVER, Simon wrote:
>
> Just for the record, last night setoff a policy which normally streams 5
> jobs to 2 drive.
>
> This time, configured for 3 streams to 3 drives. Just got into work and
> found its MUCH SLOWER than the week before !!
>
> So I will revert back !!
>
>
>
> Regards
>
> Simon Weaver
> 3rd Line Technical Support
> Windows Domain Administrator
>
> EADS Astrium Limited, B23AA IM (DCS)
> Anchorage Road, Portsmouth, PO3 5PU
>
> Email: <mailto:Simon.Weaver at Astrium-eads.net>
Simon.Weaver at Astrium-eads.net
>
> -----Original Message-----
> From: Paul Keating [mailto:pkeating at bank-banque-canada.ca]
> Sent: 23 November 2006 13:42
> To: veritas-bu at mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] LTO-3 and MPX
>
>
>
> If you backup server can handle the incoming IP traffic, and you can get
it
> to the drives......it will be great.
>
> I found best aggregate performance for LTO2 and LTO3 with my GigE clients
@
> MPX=2, and my 100Mb/s clients @ MPX=8.
>
> Paul
>
> --
>
> -----Original Message-----
> From: veritas-bu-bounces at mailman.eng.auburn.edu
> [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Hampus
Lind
> Sent: November 23, 2006 2:15 AM
> To: veritas-bu at mailman.eng.auburn.edu
> Subject: [Veritas-bu] LTO-3 and MPX
>
>
>
> Hi all,
>
>
>
> How good/bad are LTO-3 drives when it comes to multiplexing? Would we see
> great performance degradation if we set MPX to 4 on 1 LTO-3 drive and the
> run 4 simulations backups to that drive?
>
>
>
> I understand it can depend a lot on our clients as well...
>
>
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> La version fran??aise suit le texte anglais.
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