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For the Fermi servers see: NFS/GPFS and Xroot Disk AllocationsAssets

Fermi XRootD Cluster Setup

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In order to handle the shared file system a subcluster was introduced in is currently used by the test xrootd.The subcluster redirector is aware that the xrootd data server export a shared file system. The setup is shown in the figure below. Clients still connect first the the main redirector (glast-test-rdr). If a file is on GPFS the client will be first redirected to the subcluster redirector which subsequently redirects it to one of the gpfs data server.

Server Setup

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