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+====== ceph ======
+  * [[btrfs]]
+  * [[ceph-mon]]
+  * [[ceph-osd]]
+  * [[ceph-mds]]
+  * [[hdparm]]
+  * [[xfs]]
+  * [[http://ceph.com/docs/master/rados/configuration/filesystem-recommendations/|Hard Disk and Filesystem Recommendations]]
+==== Kernel ====
+Upstream recommends using XFS or ext4 in production.  brtfs is possible, but not recommended at this time for production environments.
+Enable extended attributes for the filesystem in the kernel.
+==== Setup Disks ====
+Use a separate drive for the OS and the data wherever possible.  Otherwise, split them up on individual partitions.
+Use ''hdparm'' to disable write caching on the drive:
+<code>
+hdparm -W 0 /dev/sda 0
+</code>
+For ext4 filesystems, enable omap support in ''ceph.conf''; optional for xfs or ext4.
+<code>
+filestore xattr use omap = true
+</code>

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