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Re: [K12OSN] IDE vs SCSI



Thanks for clarifying that for me.  Is the reason that it takes so much
bandwidth for the /home directories similar to the reason having roaming
profiles eat up bandwidth on NT systems?  Or is it something else?  Jeff

On Wed, 2003-01-15 at 07:55, jeffr odeon net wrote:
> 
> I'm fairly sure you've got it backwards.  It looks like he's got one main
> SCSI based data storage server (size unknown) and 4 EIDE based application
> servers.
> 
> It looks to me like his 4 application servers have single 60 gig EIDE
> drives in them.
> 
> His data storage server (the server that is exporting /home to the
> application servers) has fast scsi drives.  Quite a bit more than 5 gigs
> I'm sure.
> 
> It looks like those 60 gig EIDE drives in his application servers are
> hardly being used, hence the 5 gigs used for K12LTSP on the application
> servers 60 gig drives.
> 
> He's using the remainder of the storage (~55 gigs) on those 60 gig EIDE
> drives that are in his application servers as an rsync repository that
> contains online backups of his SCSI based data storage server (the one
> exporting /home via NFS).
> 
> Jeff
> 
> 
> On 15 Jan 2003, Jeff Zidek wrote:
> 
> > Sorry I replied to the wrong email this is the one I was referring to.
> >
> > I want to make sure I understood you correctly.  Your main LTSP
> > application server is a 5 gig with scsi and your data storage is to
> > servers running 60 gig ide drives.  Did I get that correct?  Jeff
> >
> >
> > On Wed, 2003-01-15 at 06:04, pnelson wrote:
> > > We export /home via nfs to 4 application servers all running ide drives.
> > > The server exporting /home has fast scsi drives. This works very well.
> > > It's really the read/writes to /home that can get you into trouble.
> > >
> > > Once the application servers boot and open common apps like OpenOffice
> > > and Mozilla the ide drives are not used much. I have one 60 gig ide
> > > drive in each application server. I use 5 gigs for the k12ltsp system
> > > and use the rest of the space for rotating backups of /home via rsync.
> > >
> > > ;-) Paul
> > >
> > > On Wed, 2003-01-15 at 07:40, Jim Thomas wrote:
> > > > Hi everyone,
> > > >
> > > > I've been following a lot of threads lately about the performance of IDE
> > > > vs SCSI, and you've seriously convinced me to move in a SCSI direction.
> > > > But I have a few questions.
> > > >
> > > > I'm thinking about leaving IDE drives in the LTSP server and using a
> > > > separate box as a SCSI file server.  If the file server exports /home,
> > > > is that enough?  Or do the LTSP servers need SCSI for other paritions as
> > > > well?  Can they mount them from a file server?  Does an NFS-mounted SCSI
> > > > drive outperform a local IDE drive?  I'd like to put the file server on
> > > > the "outside" LAN (that is, not on the terminal LAN) so it can be
> > > > available throughout our facility using NFS + Samba.
> > > >
> > > > Any advice?
> > > >
> > > > --
> > > > Jim Thomas            Principal Applications Engineer  Bittware, Inc
> > > > jthomas bittware com  http://www.bittware.com          (703) 779-7770
> > > > A pessimist is an optimist with experience
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > K12OSN mailing list
> > > > K12OSN redhat com
> > > > https://listman.redhat.com/mailman/listinfo/k12osn
> > > > For more info see <http://www.k12os.org>
> > > >
> > > --
> > > ======================================================================
> > > Paul Nelson.............................. pnelson riverdale k12 or us
> > > Riverdale High...........9727 SW Terwilliger Blvd. Portland, OR 97219
> > > (503)892-0722......fax(503)892-0723.... http://hs.riverdale.k12.or.us
> > >
> > >
> > >
> > > _______________________________________________
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> > > https://listman.redhat.com/mailman/listinfo/k12osn
> > > For more info see <http://www.k12os.org>
> >
> >
> >
> >
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> > For more info see <http://www.k12os.org>
> >
> >
> >
> 
> 
> 
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