Important things to remember about remote filesystems and hardware with
backuppc. Since backuppc is mostly IO bound, it is important to have a high
quality, well supported chipset. You standard realtek or broadcom onboard
NIC will not help you much. Get something like an intel gigabit nic.
Best to use iscsi or ATAoE rather than NFS. NFS is a software layer on
another filesystem which can add a bit of processing overhead that hurts raw
IO performance, iSCSI or ATAoE are a bit closer to the metal and perform a
bit better.
Network filesystems will not be able to compete with directly connected
interfaces like SATA or SCSI. added layers, add latency. added protocals
add latency. latency is directly related to IO.
You COULD do something like infiniband. you can get into a 20Gbps
infiniband link for $500-$600 but you would need to have a pretty fast
SAN/NAS with some serious RAID hardware to justify it.
On Mon, Mar 31, 2008 at 8:22 AM, <[EMAIL PROTECTED]> wrote:
> So, it works with NFS ?
>
> Romain
>
>
>
>
> Stephen Joyce
> <[EMAIL PROTECTED]
> unc.edu> A
> Envoyé par : [EMAIL PROTECTED]
> backuppc-users-bo t
> [EMAIL PROTECTED] cc
> eforge.net
> Objet
> Re: [BackupPC-users] Using a NAS
> 31/03/2008 16:17 Server to backups
>
>
>
>
>
>
>
>
>
>
> On Mon, 31 Mar 2008, Tino Schwarze wrote:
>
> > > On Mon, Mar 31, 2008 at 03:14:34PM +0200, Ronny Aasen wrote:
> >
> > > > > I would like to know if it's possible and how to configure
> BackupPC
> in
> > > > > order to use a NAS server instead of the path /datas of BackupPC
> (for
> > > > > example).
> > > >
> > > > Sure, it's possible to do an NFS mount of a remote disk, and use
> that
> for
> > > > your BackupPC storage.
> > > > In all likelihood tho, it will be terribly slow. Don't try it.
> BackupPC is
> > > > too disk-I/O intensive.
> > > >
> > >
> > > Are there any NFS/SAN solutions are _are_ usable with backuppc
> > > for example iscsi/fc/afs/codafs etc etc.
> >
> > A SAN would do since you're creating an ordinary file system on top it.
> > The file system needs to support real hardlinks to be usable with
> > BackupPC. AFS doesn't really fit since you'd need to create one large
> > BackupPC volume, so you're just moving the problem from local to remote
> > server (that is managing a very large chunk of file system).
>
> AFS doesn't support hard links between directories, which BackupPC
> requires.
>
> Cheers, Stephen
> --
> Stephen Joyce
> Systems Administrator P A N I C
> Physics & Astronomy Department Physics & Astronomy
> University of North Carolina at Chapel Hill Network Infrastructure
> voice: (919) 962-7214 and Computing
> fax: (919) 962-0480 http://www.panic.unc.edu
>
> "Lazy Programmers know that if a thing is worth doing, it's worth
> doing well -- unless doing it well takes so long that isn't worth
> doing any more. Then you just do it 'good enough'"
> --- Programming Perl, p 282.
>
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