Re: P4 Motherboard for File Server

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On Wed, 10 Nov 2004, Jeff Vian wrote:

On Wed, 2004-11-10 at 08:51, Joel Jaeggli wrote:
On Tue, 9 Nov 2004, Nifty Hat Mitch wrote:

I don't know why your requirements are so high.. I'm running a P3 300Mhz 512 MB Ram as a file-server.

600GB IDE Storage

I wondered too.

If you want to get over ~60MB/s agregate via nfs your server is going to need a faster connection between you disk controllers, processor and your NIC's than 32bit 33mhz pci.


~60MB/s sounds like enough to saturate 40 T1 links, and definitely would likely require multiple gigabit LAN as well as massive switches and routers.

60MB/s is 480Mb/s and that's nothing for a high-end nfs server.

It would seem better to me to use a SAN storage unit with fibre channel
rather than a pc file server on a LAN for that massive throughput. NFS
will be a major bottleneck here.

Unless you have some kind of funky namespace mananger, access to san filesystmes is at the block level, access to filesystems via nfs is at the fs level and can thuse be shared. beyond that gigabit ethernet hardware is simply a hell of a lot cheaper than fibre channel.


In any case, for that throughput it definitely requires a server class
system.

yes

At this point, your IO requirements tend to drive motherboard choice,
which in turn drives processor selection. If you need more than 2 x Gb ethernet
or more than 4 pci-x slots for controllers and additional nics then
obviously your number of choices narrows quite a bit.

A file server only needs to have disks that match the
wire speed.  While he specified multiple network links
he did not specify the speed of those links.

How many clients, what type of service NFS, samba, ftp, http, squid???
Lots of things qualify as file serving today.

An rsync host does demand extra CPU if the client load is high.

One comment is that a reliable mother board is likely one that has one
notch down: CPU, IO and memory installed and two notch up fan/ cooling.
Keep those disks cool....

Do some measurements... and analysis.




-- -------------------------------------------------------------------------- Joel Jaeggli Unix Consulting joelja@xxxxxxxxxxxxxxxxxxxx GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2



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-------------------------------------------------------------------------- Joel Jaeggli Unix Consulting joelja@xxxxxxxxxxxxxxxxxxxx GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2



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