Hello,   Unfortunately, rebuild times aren't something that can be influenced to run faster than what they already do. Once you import the foreign configuration, the remainder of the operation would need to complete automatically.
I have a raid 5 dell poweredge2900 server with 3 disk, one of them is online and disk 1 and disk 2 are marked as foreign, it shows that they are on rebuild but it takes a lot of time can you help me with this issue
Raiud issue 2 disk are marked foreing