I think there are two points here: A) RAID striping is probably a "loser" for GPFS metadata. B) RAID mirroring for your metadata may or may not be faster and/or more reliable than GPFS replication. Depending on your requirements and assumptions for fault-tolerance one or the other might be the winner.
But .. if you're serious about performance - measure, measure, measure and pick the winner. (And we'd like to know what you found!) And if you want the best performance, you'll probably need to (re)measure whenever you acquire new equipment. GPFS can do and does striping for high performance when reading and writing metadata and data...
_______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
