On Thu, Jan 20, 2011 at 10:14:42PM -0600, Stan Hoeppner wrote: > > Have you considered SGI CXFS? It's the fastest cluster FS on the planet by an > order of magnitude. It uses dedicated metadata servers instead of a DLM, > which > is why it's so fast. Directory traversal operations would be orders of > magnitude faster than what you have now.
That sounds quite impressive. Order of magnitude improvements would be very welcome. Do you have any data to back up that statement ? Are you talking streaming performance, IOPS or both ? I've read that CXFS has bad metadata performance, and that the metadata-server can become a bottleneck.. Is the metadata-server function only possible to run on one node (with passive standby node for availability) ? Do you know anything about the pricing of CXFS? I'm quite satisfied with GPFS, but know I might be a bit biased since I work for IBM :-) If CXFS really is that good for maildir-type storage, I probably should have another look.. -jf
