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#FORMAT ZFS DISK OPENZFS INSTALL#

In the even of a single disk failure, all data can be recovered and in fact, will still be accessible providing no further disks fail. A minimum of three disks are required with one disk always being used for parity.

RAID-Z – data will be written to all but one of the disks, with the remaining disk used for parity.

In the event of a failed disk, all data on the stripe will be lost. This provides the fastest read and write speeds but it offers no redundancy. In a two disk striped array, half of a file would be on disk one and half of the file on disk two.

Stripe – data will be stored across all available disks, equivalent to RAID 0.

For example, if you use 2x 500GB disks, only 500GB will be available as the other 500GB will be a copy of the first disk. This provides the best redundancy but requires the most space.

You require a minimum of two disks for a mirrored set. This is quite simply a copy of one disk to another every time data is changed.

Mirror – data will be mirrored across disks, equivalent to RAID 1.Disks can be combined into virtual groups to allow for various redundancy options: ZFS provides a data volume which can have multiple mount points, spanning multiple disks.

#FORMAT ZFS DISK OPENZFS INSTALL#

We can now install the ZFS on most Linux distributions such as Debain/ Ubuntu and Red Hat/ CentOS. Thanks to some clever guys over at ZFS on Linux, this has now changed.

ZFS was initially developed by Sun for use in Solaris and as such was not available on Linux distributions.