Re: Home directories: local(fast) x remote(secure, available)
Hi, Mr Konzack,
Thank you very much for your time and guidance.
In fact, our cabling is in poor condition, right now, so we're budgeting
to replace all of it soon, with a new CAT6 harness. I'll arrange to replace
also the switches - that will allow us to move to GB ethernet in the workstations
at the end of current leasing period (next year).
However, our uplink to the the server room is a single 1GB fiber link.
Actually, there are two links, but that's only for redundancy, it's not trunking.
There are about 20 users, 10 of which are tipical windows office users -
mostly local data and processing, network only for web, e-mail and printing.
The remaining users are doing debian etch, including remote home and a lot of
ssh -XC sessions. Do you think that only one link will be enough?
Thanks a lot,
João
On Monday 01 September 2008 14:13, Michelle Konzack wrote:
> Am 2008-08-29 15:18:59, schrieb Joao Carlos de Lima Roscoe:
> > Dear Srs,
>
> ???
>
> > I have a bunch of machines (<20) and users (~15) working in a
> > develoment facility.
> > I like to keep home directories inside the server room - they're
> > mounted via NFS.
>
> Which is OK.
>
> > This give me short times for disaster recovery, since the desktop
> > machines can be
> > recovered with partimage, and all relevant data is in the server room,
> > where all
> > machines are redundant, are under close supervision, and so on.
>
> I do the same...
>
> > In the downside: NFS is not as fast as a local filesystem (we've got
> > 100Mbit
> > ethernet, only), and from time to time this costs me something.
> > Beagle, for
> > instance, is not feasible for home directories this way.
>
> I suggest you to upgrade to a GBit network.
>
> I have here a minimum of 80 MByte/Sec using NFSv4 with
>
> samba3.private.tamay-dogan.net:/home /home nfs rw,bg,hard,intr,tcp,vers=4,rsize=16384,wsize=16384 0 0
>
> in the /etc/fstab on the workstations
>
> > I'm considering to move the home diretories to the desktop machines, for
> > performance, but the users will have to keep their desktops running even when
> > they're away from their desks (in the lab, or telecommuting, for instance) the keep
> > their homes available. Also, it will be necessary to extend the backup procedures
> > outside the server room. In fact, I would have desktop machines acting as server
> > ones, while running outside the controlled server room, and I really don't like it.
>
> Realy crap!
>
> > What do you, gurus out there, think about that? Any suggestion? Does anyone know
> > about some kind of home caching solution or something?
>
> Even CHEAP (!!!) 36port GBit Switches with TrendNet Cards will give you
> at least 40-50 MByte/Sec. Using a professionel switch, which cost
> arround 800 Euro, and Intel GBit Desktop Cards give you the FULL
> performance of 80-100 MByte/Sec.
>
> I stronly recomment to this upgrade since you are working in a profess
> sionell environement
>
> And even if you want like to upgrade all, install in the Servers GBit
> Cards and use a GBit switch. and let the workstations be on 100 MBit.
>
> This schould work perfectly too and reduce costs enormeous.
>
> Thanks, Greetings and nice Day/Evening
> Michelle Konzack
> Systemadministrator
> 24V Electronic Engineer
> Tamay Dogan Network
> Debian GNU/Linux Consultant
>
>
--
João Carlos de Lima Roscoe
Magneti Marelli Sist Aut LTDA
SW development - P&D/DLO
Hortolandia - SP - Brazil
Phone: +55 19 2118 6552
Fax: +55 19 2118 6379
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