Finally, after a really long time, I can get started with Unraid. (I bought the license 2 years ago)
I had a Qnap TS-212 NAS with 2 2TB WD drives in JBOD. (at least) 1 drive started to fail.
I also have 1 Seagate 4TB external drive with (almost) all my data. That Seagate is a backup drive for my old Qnap TS-212; I has a complete copy of the Qnap data.
Last backup was from some time before the one WD drive started to fail; so the Seagate has most of the data; but may miss some of the last data I put on the NAS.
I now have a HP Elitedesk G8 SFF (with 1 512GB SSD) and 2 new WD 12TB drives (shucked WD Elements). I want to use 1 for array and 1 for parity.
I have looked at Unraid for years, and I think I now know how to start all this.
1 Install 1 WD 12TB drive in Elitedesk, and install Unraid (I want to use internal boot on the SSD).
2 Setup basic file structure according to Trash Guides (basically a share called 'data' with several subfolders). And maybe some shares for some other data.
3 Install basic plugins; basically follow IBRACORP's Zero to Hero videos, including Unassigned Devices and Unassigned Devices Plus (so I can use the external Seagate and WD drives).
4 Temporarily disable cache for the shares.
5 Plug the Seagate drive in to USB of the Elitedesk and start copying data from Seagate to Unraid.
6 When that's done; plug 1 WD drive in at a time (using sata) and see if Unraid manages to see the files - that's why Unassigned Devices (Plus) was needed - and if it does; see if there's anything on it, that wasn't on the Seagate drive and copy it to the Elitedesk.
(In a previous post here; people have said Unraid with Unassigned Devices (Plus) should be able to read/see the files on a QNAP JBOD drive.)
7 When all data is on the Elitedesk; install 2nd new 12TB drive, assign it as parity drive and let Unraid do it's thing.
8 Enable cache for shares.
9 Done.
Does that seem right? Looks like I shouldn't install parity drive before ingesting all the data; since it would make transfer much slower.
And Unraid has now a build-in 'file explorer' so I can use that to pick and choose files/folders and transfer them from the Seagate and old WD JBOD drives to the new array?
Older posts seem to suggest I should use Krusader of something else, but I've seen newer posts Unraid has build-in 'file explorer'. I would like to have an easy way to pick and choose folders and files myself and copy them to the new share(s), since the file structure on the old Qnap and Seagate drive is different than on the new Unraid system.
EDIT: another thing; is preclearing drives on Unraid still a thing? If so; that would come between step 1 and 2, and take a long time I think.