Raid 1+0

[Splinxly]

Hi,

I have read a lot around raid levels and for me the easiest solution would be to extend today solution. As I have understand it takes a lot of power to rebuild an array if it is configured as raid-z2 for example, therefore I want to make it as easy I can.

So far I am using a simple mirror 2+2TB disks with 16GB ECC RAM. My plan is extend this with two more disc at 3 or 4TB.

Would 2x2TB + 4x4TB in a raid 1+0 mirror be to much for 16GB memory? I do not use any special setup with active directory, jails or other heavy tasks. Only a plain ZFS solution here. If I make a calculation around recommended disc/RAM I would only be able to extend to 4x2TB disc without extending RAM to 32GB. Correct? Is this calculation also applicable on a simple mirror as in my case?

Thanks,

 

[Ericloewe]

16GB is probably fine.

 

[SweetAndLow]

Your RAM is perfectly fine but your use of the word 'raid' and understanding of vdevs could use some improvements. You want to have a bunch of striped mirrors.

Read this:
https://forums.freenas.org/index.ph...ning-vdev-zpool-zil-and-l2arc-for-noobs.7775/

 

[fta]

Your RAM is perfectly fine but your use of the word 'raid' and understanding of vdevs could use some improvements. You want to have a bunch of striped mirrors.

RAID10 == striped mirrors

 

[Sakuru]

https://forums.freenas.org/index.php?threads/terminology-and-abbreviations-primer.28174/

 

[fta]

https://forums.freenas.org/index.php?threads/terminology-and-abbreviations-primer.28174/

Lol. I realize this forum likes to pedantic the sh*t out of newbies, but I'm pretty sure the OP's understanding was ok.

 

[Splinxly]

Aha, striped mirrors, to use the correct name. But my question has been answered. There seems to be no problem to use 12TB(6TB) of disc space with my setup.

Thank you all!