Disk size to Mirror or Raid 10

Hi,

you will have to create a RAID 0. There is no safety but all your disks will be added in their capacity.
But it is a high risk! If only one disk has an error the hole RAID is broken.

https://en.wikipedia.org/wiki/RAID

Zitat von Zydrius

Hello,

I have 4 IDE HDD 160 gb and 2 SATA HDD 80gb, i try create raid 10 or mirror disk, but then I select all disk, my crieated disk size shows 80 gb, how to do my disk have 160+160+80=400 gb?

And if I later change 2 sata HDD 80, to 2 sata HDD 250 gb it change easy or its need remove raid disk and create for new raid disk?

your calculations are wrong.

in regular raid the array capacity is calculated using smallest disk in the pool(except RAID-0).
ie. since you have 80gb drives, if you use all drives to build the pool
the total raid disk size will be 6x80 = 240 GB

if you want to fudge a bit to get the capacity you can partition all of your 160GB disks into 2 partition 80GB each and build array using partitions hence 10 devices x80GB in RAID-10 will give you 400GB pool.
BUT be aware that if once of the 160GB disks fails it will counts as 2 device failure in array.
NOT GOOD

raid10 is also a mirror , just different from raid1 in the way it is buld.

here is a good explanation of Raid-1 vs Raid 10

with 4+ disk you get a better tolerance of array to double disk failure compared to raid-1 and a faster writes.

not sure if OMV will show you any data on what disk failed but you can always do mdadm --manage from CLI, and set SMART checks on schedule as well