On Thu, 13 May 2010, Yiorgos Adamopoulos wrote:
We manage ~100K mailboxes which will be migrated on new servers. The mailbox format is mbx (expetced to change to mix after the migration) and the Operating System will be Linux amd64. So, on what filesystem would one place them? Currently we are thinking of putting them on XFS.
Some time back I did some benchmarks with "mailstone", and decided in the end to go with XFS on Linux. JFS was also fairly good. Now there is ext4; haven't tried that for mail, it's still somewhat experimental. I used it on Fedora 9 for a while but things crashed (possibly unrelated) and the absence of ext4 support in the rescue disk killed me. It did seem significantly faster than ext3.
Since then, we tried using XFS on iSCSI which was a disaster, at least under RHEL 4.
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