[SOLVED] Help with setting up 10 zfs disk

[dsh]

Hello,

At the moment I have 4 disk as follows:

rpool
mirror-0
disk-1
disk-2
mirror-1
disk-3
disk-4

Now that I need to add 6 devices I'm confused.
Should I add 3 disk each to existing mirrors? or should I create another 3 mirror with each having 2 disks?

What are pros and cons of each setup in terms of redundancy, overall disk space, read and write speed?

Thanks in advance.

 

[wolfgang]

Hi,

Should I add 3 disk each to existing mirrors? or should I create another 3 mirror with each having 2 disks?

It depends on what you like to achieve.

Add 3 disk to the mirror will only increase the parity so you would have 5 copies of on dataset.
This brings no extra space or speed and makes no sense to me.

The 3 extra mirrors in the pool will extend the raid 10 and will increase the speed.
But you can only lose on disk per mirror and if one mirror is out of disk you pool is corrupt.