• RAID on data disks: It is generally not necessary to use RAID for the following reasons:

  • RAID on the commit log disk: Generally RAID is not needed for the commit log disk. Replication adequately prevents data loss. If you need the extra redundancy, use RAID 1.


    On 24 Jul 2013, at 15:36, Jan Algermissen <> wrote:


    second question:

    is it recommended to set up Cassandra using 'RAID-ed' disks for per-node reliability or do people usually just rely on having the multiple nodes anyway - why bother with replicated disks?


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