DL 385 G8 Remove Hotspare not possible

[Elefanten]

Hi

We have a Proliant DL385 G8 server with a P420 controller running VMware ESXi 6.0

We rebuilt an array containing 2x600GB disks using Raid 1 to 2x 1,2TB disks without any issue.

However when i was going to resize the array i was not allowed since there was a hot-spare disk attached with 600GB size.

We no longer need a hotspare for this server.
How can i remove the hot-spare disk, i could not see any button that allowed me to do this in ACU ?

BR
Elefanten