You can expand virtual disk by adding new disks. You need to ensure new disks are same type and family of existing drives. You can use PERC Configuration Utility or OMSA for reconfiguration You can refer "Reconfiguration of Virtual Disks" section on page 18 of below link for more details [URL] 
Hi, Is anyone able to advise if we should be able to add two SSD to our existing 6SSD RAID5 virtual disk? Apologies, I don't even know what information would be required to answer that question, here's some that may be useful: Server: Dell Poweredge R620 Controller: PERC H310 mini [IMAGE]   [IMAGE]   I don't see reconfigure in the Virtual Disk Actions: [IMAGE]   Any assistance appreciated.   Regards Daniel Webb
Is it possible to add 2 SSD to an existing RAID5 array?