RAIDZ is ZFS’s implementation of RAID5. It uses a variable width stripe for it’s parity, which allows for better performance than traditional RAID5 implementations. RAIDZ is typically used when you want the most out of your physical storage and are willing to sacrifice a bit of performance to get it. You can have a single disk failure in a RAIDZ array and still maintain all of your data.
To create a RAIDZ Zpool first run the format command to find the disks that you have in your system.
Once you have run the format command, you should have a list of disks that you can select for your Zpool. Select the ones that you would like to use (we’ll use c4t5d0-c4t8d0) and issue this command :
zpool create tank raidz c4t5d0 c4t6d0 c4t7d0 c4t8d0
Once you issue that command, it should build the zpool. Run the “zpool status” command to make sure it was created as expected.
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