[gpfsug-discuss] Flash for metadata

[Marc A Kaplan]

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...


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