Trying to merge unallocated disk space to virtual disk

Hi All,

Running a Scale out File server on Server 2012 R2.

I am covering for a co-worker and one of the virtual disks have run out of space. So I extended the virtual drive to a desired size but now I can’t merge the two. In the volumes -> disks window it shows the capacity of the virtual disk as correct but also shows the new amount (the amount that I just added) in the unallocated column. So how do I get the unallocated to merge??

Hope this makes sense.

Thanks.