[SOLVED] RAID-Z1 clarification

[MisterPiggo]

Hi,

I am new to NAS4Free and I am wondering how NAS4Free calculates his free disk space.
I have the following setup:
* I formatted 3 68.71GB drives with a ZFS Storage Pool filesystem;
* Than I added a Virtual Device under Disks - ZFS - Pools - Virtual Device, here I chose RAID-Z1 which should be the same as RAID5;
* Finally I added a Pool under Disks - ZFS - Pools - Management;

Here's the question:
If you use RAID5 you should have 137.42GB as storage and 68.71GB for protection. If RAID-Z1 is the same as RAID5, why does NAS4Free show me that I have 191GB free disk space. This means that it doesn't have any protection.

Does anyone know what I am doing wrong or if I do not understand either RAID5 or RAID-Z1??

[raulfg3]

go to Diagnostics > Information > Space Used and post result.

mine are:

1.jpg

[MisterPiggo]

Thanks for your quick response, I couldn't find the explicit page you are showing (probably an older version, I use version 11.1.0.4 - Atomics (revision 4729)), but I did find the following two pages which are similar:

[raulfg3]

in menu, go to Diagnostic -> information.

[MisterPiggo]

So if I understand it correctly RAID-Z1 means the following:
If we have 3x 68GB drives we have ~120GB storage and 68GB protection.
Looking at the Diagnostic page you can see that the ZFSPool has 123GB available, but if you go to Disks > ZFS > Pools > Management, you see the total disk size.

Thanks for clarifying^^

[raulfg3]

yes.

you are rigth.