[Is there a way to control which disks in a pool are to be used for duplication?]

On 3/4/2020 at 11:16 AM, Umfriend said:

Ah, you would write files to G:\. DP will save two duplicates to E and F. Each of E and F would divide single instances to A+B and C+D respectively.

Do not write to E or F. You can, but those files will only be part of Pool E (or F) and not be duplicated. Much like writing to a drive directly outside of the hidden PoolPart.* folders, those would not be part of any Pool.

Thank you for the help, I have it all set up and working perfectly.

[Is there a way to control which disks in a pool are to be used for duplication?]

On 1/12/2020 at 4:26 AM, Umfriend said:

You could use Hierarchical Pools. Say you have disks A, B internal and C is the external one. You can then:
1. Create a Pool Q consisting of A and B, no duplication
2. Create a Pool R consisting of C, no duplication (*)
3. Create a Pool P consisting of Pools Q and R, x2 duplication.

However, I don't think there is a good way to deal with temporarily removing drives. AFAIK, if you then (physically) remove/disconnect drive C, DP will put Pool P in read-only mode. May be what you are looking for but I'm not sure that will always work out well. Moreover, is that a USB connected drive? AFAIK, using USB-connected drives is not considered best practice and IIRC, it has led to problems, including data loss, due to connections over USB sometimes dropping for a bit (which I think is still within spec for USB).

(*) you could also create Pool P with Q and C, so without the intermediary step of Pool R but I think it makes it a bit harder to manage when removing/adding.replacing drives.

Umfriend, I'm try to do something similar just with a 4 bay DAS. I have 4 - 12TB drives. A, B, C and D. I want A and B pooled no duplication and C and B pooled no duplication aswell. But I want C and D be a duplication of A and B so I have a better idea what drives are doing what.

So I think I need to create pool E = A + B no duplication and F = C + D no duplication.

Then create pool G = E + F with duplication.

So if above is correct then which pool do I want to write to? My guess is write my files to pool G or maybe E?. If that's correct then can I hide the other pools somehow so I see only the pool I need to write to. 

 

Thanks in advance 

[Drivepool disk size]

This is my first day using Drivepool. I just installed two 12TB hard drives on my system. I added them both to the pool. So the disk size of the drivepool is 21.8TB of free space. I then turned on file file protection for the pool in Manage Pool settings. Shouldn't Drivepool size be cut in half after that? It still show 21.8TB but probably should really only show 10.9TB with file protection on for the whole pool

I have a feeling I set it up wrong. I was reading some other posts where you put a pool inside a pool and turn on pool protection. But being new I felt that was beyond my understanding of the program right now.