What i'm wondering is, how the hardware raid level on the two poweredge 2650s (aacraid perc3/di controller) using linux 2.6 kernel and EXT3 will effect the performance of cyrus. In the past we've always used raid 10, believing that it offered a significant performance boost over raid 5 for write intensive apps like cyrus. Recently however i noticed that CMU is actually using RAID 5 on its arrays. Obviously being able to use RAID 5 would be terrific as it would give us significantly more storage for the buck.
What are the implication of raid 10 vs. raid 5 with cyrus? Are they significant? Does EXT3 play into the discussion?
Thanks, Lee
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