What is viewed as the best practice (or what are people doing) on something like an SGI ICE system with multiple service or head nodes? Does one service node generally assume the same role as the head node above (serving NFS, logins, and running services like PBS pro)? Or ... if NFS is used, is it perhaps served from another service node and mounted both on the login node and the compute nodes? Two service nodes which act as login/batch submission nodes. PBSpro configured to fail over between them (ie one is the PBS primary server). Separate server for storage – SGI connect these storage servers via the Infiniband fabric, and use multiple Infiniband ports to spread the load – you can easily configure this at cluster install time, ie. every nth node connects to a different Infiniband port on the storage server. The contents of this email are confidential and for the exclusive use of the intended recipient. If you receive this email in error you should not copy it, retransmit it, use it or disclose its contents but should return it to the sender immediately and delete your copy.
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