On Wed, 2004-11-10 at 17:19, Joel Jaeggli wrote: > 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. > 480/1.54 is still almost 30 T1 volumes. NFS overhead pushes that a lot higher. Are you planning for peak or average? > > 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. > true > > 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 > > > > > > -- > -------------------------------------------------------------------------- > Joel Jaeggli Unix Consulting joelja@xxxxxxxxxxxxxxxxxxxx > GPG Key Fingerprint: 5C6E 0104 BAF0 40B0 5BD3 C38B F000 35AB B67F 56B2
