> I don't think NFS/AFS is that good an idea; you'll need very beefy
> fileservers and a fast network.

NFS may actually be useful; if you really need the files in one
directory space for management/updates that's a way to do it (i.e.
mount all the various storage servers by NFS on a management
station/ftp server/whatever).

For serving content some HTTP-based scheme to get the requests to hit
the right server is probably in order. Proxies are useful if you have
special requirements (for example SSL, where it doesn't make sense to
have the CPU and the disk in the same place), but it normally makes
more sense to distribute the requests to the correct server/s in the
first place (either by front-ends that know the location of content
sending a Location: header if you want to give out URLs with a single
server name) or by the html pointing clients to the files on the
right servers.

> various SANs come to mind

TFMotD: fsck(8) (-: Relying on black-box vendors for fixes is an
additional bonus. Works for some people, though. Allegedly.

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