ZFS Storage layout

Ubuntu Linux supports ZFS out of the box.

ZFS provides many benefits:

• Compression
• Deduplication
• Snapshots
• File system level RAID support
• Adding storage on the fly with additional devices
• Storage pool management (no hard file-system boundaries)
• Different settings for file systems in the same pool (compression, deduplication, block size)
• Sending snapshots to remote locations
• Encryption support

• Domino supports ZFS as long the file system is not deduplicated (for performance reasons)
• DAOS storage deduplication would only make sense if combined with backup in the same pool
• The small CPU overhead introduced by compression is benefiting the lower IOPS and storage

The following pool has been created

zpool list
NAME   SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
tank   298G  2.87G   295G        -         -     0%     0%  1.03x    ONLINE  -

• Translog uses a 16K block size file system
• The Backup file system is deduplicated
• All file system have compression enabled and atime disabled

zfs list
NAME            USED  AVAIL  REFER  MOUNTPOINT
tank           2.88G   286G    24K  /tank
tank/backup     342M   286G   342M  /local/backup
tank/local     2.33G   286G  2.33G  /local
tank/translog   217M   286G   217M  /local/translog