Unfortunately, we don't really have a "merge pools" option right now. It's something that has been requested, and we may add in the future, though.
However, for now, the quickest way to merge the pools?
Please read, and reread this section. If you're not 100% certain about the process, we can set up a remote support session to assist you with this. If you would prefer that we help, then please contact me at "https://stablebit.com/Contact",reference the thread and let us know that you'd like to set up a remote support session.
That said, here's how to do it, basically.
Move the disks over.This will create two pools...
Stop the StableBit DrivePool Service. (run "net stop drivepoolservice")
Enable "Show Hidden Files" for the system.
"Unseed" one of the pools (do this with the pool with the least number of disks).
By this, I mean open the "PoolPart.GUID" folder (where "GUID" is a random sequence of letters and numbers). You should see a folder and file layout that mirrors the pool (or part of it at least).
Move the contents of the Poolpart.GUID folder out of this folder.This moves the contents out of the pool effectively, as the software uses these folders as the actual contents
Once the PoolPart folder is empty, delete the folder.
Repeat this for each of disks in the one pool
Start the "StableBit DrivePool Serivce". (run "net start drivepoolservice")It should cause the pool in question to "disappear", as there are no disks in that pool anymore.
Add the disks to the existing pool.
Stop the StableBit DrivePool Service again.
Put the contents of the disks into the newly created "PoolPart.GUID" folders
Start the StableBit DrivePool Service again.
Remeasure the pool (Pool options -> remeasure).