I'd like to set up SnapRAID (single parity) and Mergerfs on my Ubuntu 16.04 server and am not sure if my plan will work.
Hard drives:
2TB (1 partition, empty)
6TB (1 partition, 95% full)
8TB (2 partitions - 6TB (empty), 2TB (50% full))
The plan is to use the 6TB partition on the last drive as my SnapRAID parity drive and for the 2TB partition to not be part of SnapRAID but be part of the mergerfs pool. I realize that 2TB won't be protected by parity.
The desired result would be a unified data mount with 10TB usable (yet 2TB unprotected).
The system is on a seperate SSD and not part of this.
Upgrade path:
Add another 8TB drive to SnapRaid/mergerfs and move the 2TB partition's data to that and have the old 8TB drive as solely parity.
Replace 2TB drive with another 8TB drive
Is this all doable and not a terrible idea?
Thank you!
Last edit: Daniel 2019-02-16
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making the 2TB oart of mergerfs is only problematic if there will get important data on it, since mergerfs can place new data anywhere (depending on setting). So please be careful selected the best mode for you.
other option would be to have only 8TB data (on the 8TB drive) and use the 6TB+2TB disks as splitted parity. if you get a new 8TB then, it is just added (to have 16TB of protected data then).
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I'd like to set up SnapRAID (single parity) and Mergerfs on my Ubuntu 16.04 server and am not sure if my plan will work.
Hard drives:
The plan is to use the 6TB partition on the last drive as my SnapRAID parity drive and for the 2TB partition to not be part of SnapRAID but be part of the mergerfs pool. I realize that 2TB won't be protected by parity.
The desired result would be a unified data mount with 10TB usable (yet 2TB unprotected).
The system is on a seperate SSD and not part of this.
Upgrade path:
Is this all doable and not a terrible idea?
Thank you!
Last edit: Daniel 2019-02-16
making the 2TB oart of mergerfs is only problematic if there will get important data on it, since mergerfs can place new data anywhere (depending on setting). So please be careful selected the best mode for you.
other option would be to have only 8TB data (on the 8TB drive) and use the 6TB+2TB disks as splitted parity. if you get a new 8TB then, it is just added (to have 16TB of protected data then).