That's a good question-- for my tests and in general most of my backups  
(within their respective policies) run at the same speeds.

Justin.

On Sun, 26 Nov 2006, Hampus Lind wrote:

> 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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