Hi guys,
I'm currently using a Synology NAS with 4x 2TB WD Red drives and want to switch over to OMV. I will probably keep my existing drives, maybe add another one and I'm trying to figure out, what the best disk configuration might look like. A solution with UnionFS + SnapRAID seems to be the best right now.
Idea 1: 4x 2TB + 1x 8TB drive in my new NAS. The 2TB are all data drives (UnionFS pool), the 8TB is for parity.
Question: How much of the parity drive could be used for data and would there also be any redundancy, in case the drive fails?
Idea 2: Idea 1: 3x 2TB + 1x 8TB drive in my new NAS. The 2TB are all data drives (UnionFS pool), the 8TB is for parity. One 2TB disk used externally to backup the most important data independently.
Question: How much of the parity drive could be used for data and would there also be any redundancy, in case the drive fails?
A general question I'm asking myself is: How big is the parity part of a file. Eg a file is 10GB, how much space will it use on the parity disk?
I'm open to all suggestions.
Thank you!