Configure ZFS RAIDZ on Ubuntu

1. Most of the below commands require the root privilege, so switch to root now:
   
sudo -s

2. Create a new zfs pool with the name of “u” as a raidz, which tolerates a complete failure of one drive without any data loss. For more redundancy, use “raidz2”, which tolerates a complete failure of two drives at the expense of reduced storage capacity.
   zpool create u raidz /dev/sdb /dev/sdc /dev/sde /dev/sdf -f
3. Verify that the pool is successfully created:
   zpool status u
4. Create several filesystems to store movies, music, documents, etc.:
   
zfs create u/movies
zfs create u/music
zfs create u/documents
zfs create u/backup
zfs create u/software
zfs create u/pictures

5. Share these filesystems via nfs:
   
zfs set sharenfs=on u/movies
zfs set sharenfs=on u/music
zfs set sharenfs=on u/documents
zfs set sharenfs=on u/backup
zfs set sharenfs=on u/software
zfs set sharenfs=on u/pictures

6. Pictures are valuable; so, store each file twice:
   
zfs set copies=2 u/pictures

7. Documents are even mode valuable; so, store three copies of each file. In addition, enable compression, since text files compress well.
   
zfs set copies=3 u/documents
zfs set compression=on u/documents


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For information about installing ZFS on Ubuntu, please see the post Install ZFS on Ubuntu.