Re: [Networker] Slow filer backups
2004-03-11 11:12:59
If you are doing NDMP backups, which it sounds like you are, the Sun
really isn't a factor.
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Matthew Huff | One Manhattanville Rd
Director of Operations | Purchase, NY 10577
OTA LLC | Phone: 914-460-4039
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> -----Original Message-----
> From: Krishnan, Ramamurthy (Temp)
> [mailto:Ramamurthy.Krishnan AT KPMG.CO DOT UK]
> Sent: Thursday, March 11, 2004 10:41 AM
> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> Subject: Re: [Networker] Slow filer backups
>
>
> The sun machine is a E250. LTO is LTO-1 in an ATL P7K
> library. We are'nt using compression and the average backup
> time runs to more than double of what you specify.
>
> Thanks
>
> - Krishnan
>
> -----Original Message-----
> From: Howard Martin [mailto:howard.martin AT EDS DOT COM]
> Sent: 11 March 2004 15:10
> To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
> Subject: Re: [Networker] Slow filer backups
>
>
> On Thu, 11 Mar 2004 13:49:17 -0000, Krishnan, Ramamurthy
> (Temp) <Ramamurthy.Krishnan AT KPMG.CO DOT UK> wrote:
>
> >Hi all
> >
> >We have a set of NetApp 840 Filers that are connected to a ATL P7K
> >through a Gigabit switch. NetWorker 6.1.3 runs on Solaris 8. The
> >total backup size on an avg. is ~2TB a day. The backups do
> run but are
> >too slow. All the 12 LTO drives of the library won't exceed 12Mb/s
> >speed. The lowest being 90Kb/s.
> >
> >Is it a normal show? Is there some way by which I can improve the
> >transfer speed, so backups finish faster? Any help is appreciated.
> >
> >TIA
> >
> >- Krishnan
> >
> which make of LTO?
> what hardware is the Legato server - number and type of HBA ?
> what is your maximum total throughput ?
>
> Legato GUI on solaris under reports speed by ~25% so you
> might be getting streaming speeds although if you are you're
> not getting much compression (you are using compression ?).
> If you only have one gigabit link then the max throughput is
> ~ 100MBytes/sec which only keep ~7 drives streaming. If the
> Sun hardware is not Ultrasparc III at 900MHz plus it's
> unlikely you would get 100MBytes out of a Gigabit network
> anyway. How long does it take to backup 2 TB on this setup
> best time to backup would be ~6 hours.
>
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Re: [Networker] Slow filer backups, Davina Treiber
Re: [Networker] Slow filer backups, Howard Martin
Re: [Networker] Slow filer backups, Krishnan, Ramamurthy (Temp)
Re: [Networker] Slow filer backups, Howard Martin
Re: [Networker] Slow filer backups,
Matthew Huff <=
Re: [Networker] Slow filer backups, Matthew Huff
Re: [Networker] Slow filer backups, Krishnan, Ramamurthy (Temp)
Re: [Networker] Slow filer backups, Howard Martin
Re: [Networker] Slow filer backups, Itzik Meirson
Re: [Networker] Slow filer backups, Matthew Huff
Re: [Networker] Slow filer backups, Krishnan, Ramamurthy (Temp)
Re: [Networker] Slow filer backups, Krishnan, Ramamurthy (Temp)
Re: [Networker] Slow filer backups, Itzik Meirson
Re: [Networker] Slow filer backups, Krishnan, Ramamurthy (Temp)
Re: [Networker] Slow filer backups, Matthew Huff
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