Derek Martin wrote: > - provide redundant, replicating data storage (expensive: think > redundant replicating disk array, such as the expensive solutions > EMC provides for this purpose) > - connect your storage to all of the nodes in your cluster > > The only hard part is paying for the redundant storage. My now- > defunct former employer was developing a (relatively) cheap solution > that replaced the expensive EMC array with cheaper redundant RAID > arrays, but that product was subsumed by Red Hat.
Rich Braun wrote: > I'm posting this after a frustrating 24 hours with old technologies > AoE (ATA over Ethernet)... AoE comes up OK but by itself > accomplishes nothing beyond a collection of universally accessible > raw disk blocks. How about iSCSI? Is that any more solid on Linux than AoE? You'll still need a clustering file system to layer on top if you're are going to have multiple storage nodes, which is assumed. I guess once you've take on that complexity, then there is less to be gained by separating your storage nodes from your compute nodes (from an HA perspective; may still make sense from a performance perspective). (The old way to address this was with a dual-headed NAS, but clustering file systems with multiple nodes seems to be the way the cloud providers are heading. Software is cheaper than hardware...) -Tom -- Tom Metro The Perl Shop, Newton, MA, USA "Predictable On-demand Perl Consulting." http://www.theperlshop.com/ _______________________________________________ Discuss mailing list [email protected] http://lists.blu.org/mailman/listinfo/discuss
