Dear OMV Community,
Thanks to your help received in these last days, I understood that the RAID is not the way I have to go for my personal NAS and use. At the moment, I have 2 x 6 TB (just arrived, EXT4, just mounted in the OMV) and 2 x 4 TB (in RAID 1, which data I am copying to one drive of 6 TB). Once all the data from the RAID1 are transferred, I will remove the RAID 1 and I will mount the disks again. At the moment I still do not have any needs to pool the disks, as at the moment I have just 3.5 TB used.
I am writing because I still have some doubt....I am reading and more I read and more I understand that I know less and less. My first plan was to create a data disk and backup with the 6tb pair and a data disk and backup with the 4tb pair. Now I have some doubt, maybe I can pool 6+4+4 and keep one 6tb for backup for important documents and files.
Reading about snapraid and margerfs, there is something that I am not fully sure:
1) Can I use snapraid without parity? Or it does not make any sense? I am asking because my real question is: does snapraid has some kind of advantage over the "normal" mounted disks? Advantage like checksum, more disk/data protection, more speed, more reliability... I could not understand from the snapraid site
2) if sanpraid has some advantage over normal mounted disk, does it make any sense to to have one disk for data in snapraid and one normal disk for backup (just mounted)?
3) Reading some example of snapraid (which I could misunderstood) I saw for example 3 disks of 6 tb for data and one disk of 6 tb for parity to restore the data in case any one of the three disks is gone? Did I understood well? How 6 tb of parity can restore any of 6tb data? If this is true, how big is the capacity of the data pool? 6+6+6=18tb?
4) Should I use this command to format my disks: mkfs.ext4 -m 0 -T largefile4 -L LabelXYZ /dev/sdX1? I just create the EXT4 in OMV by GUI, something wrong with this?
5) I still have enough space, so I do not need to merge disks and folder at the moment. However I was wondering if the problem with the disappeared directories in the sharefolders when using mergerfs is sorted out? Or still mounting MergerFS shares at startup by commenting out the AssertPathIsDirectory is the best solution?
6) Where can I find this file to edit (to solve the disappeared shared directories issue)?
7) Should I use mergerFS by GUI or from the SSH by command? Any disadvantage with GUI?
My apologies for the long thread and too many questions. Hopefully you can find the time to read and help.
Thank you Guys!!!