Just wanted to get some advice from people that have done these things many time more than I have.
Currently config is an R510 with 8 x 3.5" drives formatted in ext4.
- SnapRaid configured through GUI as:
5x 4TB & 1x 2TB as Content/Data disks
1x 4TB & 1x 2TB as Parity disks
- Data disks are joined into a single datastore using the Union Filesystems plugin using the Most Free Space policy.
I have just bought 2 new 8TB drives and intend to replace the 2 x 2TB drives with 8TB drives.
I believe these a straight swap of these two disks is best as i believe a parity disk should always be the same or larger than the largest data disk, right?
If these suppositions are correct, my question is this. How best to replace these disks?
1. a. Shutdown, Replace 1 of the 2TB data disks, boot, remove the "broken" disk from the snapraid, wipe, format and mount new 8tb disk, add new disk to snapraid as data/content, run fix.
1. b. Repeat above with 2TB parity disk.
2. as 1, but in reverse order parity first.
3. a. nuke the whole snapraid config, same with unionfs, replace 2x 2TB with 2x 8TB, wipe and initialise all drives, re-create snapraid and UnionFS.
3. b. recreate shares, and then restore all files to the new UnionFS datastore from my 2x 12TB USB 3.0 external drives.
I am uncertain which of the options above is best for both stress on the hardware, time taken to restore, time expended doing config etc.
What does anyone recommend? is there a better way, if not which option is best from your experience?.
Thanks in advance for any help.