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The Lustre Distributed Filesystem

Nov 30, 2011, 07:00 (0 Talkback[s])

"Traditionally, Lustre is configured to manage remote data storage disk devices within a Storage Area Network (SAN), which is two or more remotely attached disk devices communicating via a Small Computer System Interface (SCSI) protocol. This includes Fibre Channel, Fibre Channel over Ethernet (FCoE), Serial Attached SCSI (SAS) and even iSCSI. To better explain what a SAN is, it may be more beneficial to begin with what it isn't. For instance, a SAN shouldn't be confused with a Local Area Network (LAN), even if that LAN carries storage traffic (that is, via networked filesystem shares and so on). Only if the LAN carries storage traffic using the iSCSI or FCoE protocols can it then be considered a SAN.

Another thing that a SAN isn't is Network Attached Storage (NAS). Again, the SAN relies heavily on a SCSI protocol, while the NAS uses the NFS and SMB/CIFS file-sharing protocols.

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