[CentOS] RAM for cluster net boot?

[Jason]

not exactly.  what are you planning on doing with these machines? Once
they boot (which is maybe a 5 meg or so file) then the file system is
pulled from an NFS share. You can do the entire OS and file system in
RAM, but why?     A server with 512meg of RAM will be MORE then enough
to serve as a PXE server (to boot off the network) and an NFS server
(for the filesystems).  Smack in a 100 gig harddrive and you're golden.

Scott Ehrlich wrote:
> I'm looking at building a small cluster of disk-less 1 or 2U servers and
> will probably use CentOS 5.
> 
> Since these machines will not have any hard drives, what would be the
> minimum amount of RAM I'd need?   Also, if using Rocks or something
> similar, will that help cluster the RAM together so 4 servers x 4 GB RAM
> each = 16 GB available?
> 
> Some applications might be CPU intensive, others might be RAM intensive,
> so I need to play that balance, too.
> 
> Thanks.
> 
> Scott
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