Date: Thu, 07 Oct 1999 15:20:48 -0700 From: Deepwell Internet <freebsd@deepwell.com> To: freebsd-isp@freebsd.org Subject: Re: NetApp servers Message-ID: <4.2.0.58.19991007152026.02f2f9d0@mail1.dcomm.net>
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The Earthlink whitepaper is at http://www.earthlink.net/about/papers/mailarch.html but I agree. It looks like a cheezy hack. Can anyone point me to good documentation of building highly scalable web servers or mail servers? I'd like to explore some different designs and look at how they scale and increase reliability. I noticed that Geocities offers all user pages at www.geocities.com/~username. How do you suppose they are implementing this? A large Sun box or two with NFS? At 11:51 PM 10/7/99 +0200, you wrote: >Damian Hamill wrote: > > > Can anyone put any figures on what it costs to install and run a large > > scale email service (say > 10,000 users) using a NetApp file server, > > i.e. what are the real costs in terms of all the hardware components > > and also how many man hours per month to look after it etc. Any real > > life examples out there ? > >Very expensive, since all mail software needs to lock files it's writing >to. NFS is stateless, a lock is state information, so by design any >implementation of such is already a gross hack. > >I suggest getting a RAID controller, preferably a SCSI-SCSI one. Cost is >about a third of a NetApp. If you really want a purple box in your racks >use them to store web pages or user home directories (i.e. stuff you need >on several machines at the same time and that will hardly be written to). > >EarthLink do run mail on NetApps. They have a white paper somewhere on >their website describing their setup (which involves some hacks in local >delivery agents and POP3 daemons to work around the locking issue). > > > -- Niels. > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-isp" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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