Hi,
Currently using 4x4TB drives with single parity on Linux Mint with mergerFS. I have an 8TB disk on the way and will be adding another 8TB disk after a few months.
I was thinking of moving to dual parity for increased protection. Is it possible to have 2x parity files on the 8TB drive for the time being (by partitioning it in half?).
Alternatively is it possible to continue using 1x4TB parity disk and using first 4TB of the new 8TB disk as data drive and the other half of it as a parity drive by partitioning it? If yes, later when I add another 8TB disk, I would use first half of the two 8TB disks as data and the second half of them as parity.
Thanks
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Is it possible to have 2x parity files on the 8TB drive for the time being (by partitioning it in half?
No, it is not possible. I think the main reasons are that it would result in very slow sync speed and the issue of a single physical disk counting as more than one lost disk in recovery scenarios.
Alternatively is it possible to continue using 1x4TB parity disk and using first 4TB of the new 8TB disk as data drive and the other half of it as a parity drive by partitioning it?
No, but you could use the remaining part of the disk to store unprotected data (as in not protected by Snapraid). In that case no partitioning would be needed.
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Hi - similar / different situation - linux Centos is the op sys
I have 5 x 4TB in a snapraid configuration and I am adding five 8TB drives.
Can I have two config files - one as /etc/snap4.conf and the other as /etc/snap8.conf?
And then run the snapraid commands twice - once with -c /etc/snap4.conf and once
with -c /etc/snap8.conf ?
Essentially having two independent sets of snapraid proteced disks
First set with 5 x 4TB with 1x4TB as parity and the second set with 5 x 8TB with 1x8TB as parity.
Thanks!
Last edit: dvgeek 2019-06-27
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Yes - you can have multiple Snapraid configs on the same server - I am currently running 3 24-drive Snapraid configurations (with triple parity) and then use Stablebit Drivepool to create a single large pool.
The key that I found was to make sure to identify and label each Snapraid config/disks distinct from each other to lessen confusion.
My frist snapraid setup is called SRS1, second is SRS2 and you guessed it - the third is SRS3. I then setup my config files, parity disks and data disks to include these names in the pathing.
Good luck!
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi,
Currently using 4x4TB drives with single parity on Linux Mint with mergerFS. I have an 8TB disk on the way and will be adding another 8TB disk after a few months.
I was thinking of moving to dual parity for increased protection. Is it possible to have 2x parity files on the 8TB drive for the time being (by partitioning it in half?).
Alternatively is it possible to continue using 1x4TB parity disk and using first 4TB of the new 8TB disk as data drive and the other half of it as a parity drive by partitioning it? If yes, later when I add another 8TB disk, I would use first half of the two 8TB disks as data and the second half of them as parity.
Thanks
No, it is not possible. I think the main reasons are that it would result in very slow sync speed and the issue of a single physical disk counting as more than one lost disk in recovery scenarios.
No, but you could use the remaining part of the disk to store unprotected data (as in not protected by Snapraid). In that case no partitioning would be needed.
Okay. Thanks
Hi - similar / different situation - linux Centos is the op sys
I have 5 x 4TB in a snapraid configuration and I am adding five 8TB drives.
Can I have two config files - one as /etc/snap4.conf and the other as /etc/snap8.conf?
And then run the snapraid commands twice - once with -c /etc/snap4.conf and once
with -c /etc/snap8.conf ?
Essentially having two independent sets of snapraid proteced disks
First set with 5 x 4TB with 1x4TB as parity and the second set with 5 x 8TB with 1x8TB as parity.
Thanks!
Last edit: dvgeek 2019-06-27
Yes - you can have multiple Snapraid configs on the same server - I am currently running 3 24-drive Snapraid configurations (with triple parity) and then use Stablebit Drivepool to create a single large pool.
The key that I found was to make sure to identify and label each Snapraid config/disks distinct from each other to lessen confusion.
My frist snapraid setup is called SRS1, second is SRS2 and you guessed it - the third is SRS3. I then setup my config files, parity disks and data disks to include these names in the pathing.
Good luck!
Oh wow!
Thanks!