Hi,
On Fri, Jul 31, 2026 at 12:04:30AM +0500, Alexander V. Makartsev wrote:
I might add insult to the injury, but are you sure you need RAID-5 if it
consists of just 3 drives?
Usually around 30% per drive's capacity will be sacrificed to hold error
correction data for the array,
so maybe it will be much better to use 2 drives in RAID-1 (Mirror)
configuration, if you need decent write performance.
Third drive could be used as spare device for the array, or a separate
storage without redundancy.
On Linux mdadm you can also do a RAID-10 across three drives which still
allows for the loss of any single drive and provides both better read
and write performance compared to RAID-5 of the same devices. The
capacity would be 1.5 drives as opposed to 2.
That is an interesting idea.