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From: John H. <jo...@Ca...> - 2009-05-12 06:48:14
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Walker, Bruce J (HP-Labs) wrote: > As John mentioned, there have been integratiion efforts with GFS and OCFS to allow direct physical access to the data from all nodes (of course assuming you have direct physical access from all nodes). Not sure if that code currently works. > And of course this is the downside of such a scenario: "assuming you have direct physical access from *all* nodes", which could be tricky if you're using something like parallel SCSI (in practice limited to two nodes as each node takes one of the 16 available SCSI ids, also horribly difficult to get termination right) or expensive if you're using FC (FC HBA's and switch ports cost a small fortune). Maybe iSCSI is the solution. Of course you have to watch out for the classic problem of setting up a redundant system and then connecting it to a non-redundant SAN! |
