On 04/26/12 09:54 AM, Bob Friesenhahn wrote:
On Wed, 25 Apr 2012, Rich Teer wrote:
Perhaps I'm being overly simplistic, but in this scenario, what would prevent
one from having, on a single file server, /exports/nodes/node[0-15], and then
having each node NFS-mount /exports/nodes from the server?  Much simplier
your example, and all data is available on all machines/nodes.
This solution would limit bandwidth to that available from that single
server.  With the cluster approach, the objective is for each machine
in the cluster to primarily access files which are stored locally.
Whole files could be moved as necessary.

Distributed software building faces similar issues, but I've found once the common files have been read (and cached) by each node, network traffic becomes one way (to the file server). I guess that topology works well when most access to shared data is read.


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