You have multiple RAID arrays configured across the same set of disks.  This is called "slicing".  Online Capacity Expansion does NOT work on sliced arrays.  This is most often done to avoid the 2TB limitation on boot disks and/or BIOS-enabled systems. So, if you wanted to add drives to your existing RAID 5, you'd have only two options:  1) delete VD's 1, 2, and 3, expand through Reconfigure, then recreate your other VD's again; or 2) backup data, wipe out all VD's create new VD(s), restore data to larger VD. Given your setup, sounds like it will be simpler for you to simply add the new disk as its own VD (1-disk RAID 0).
Here's my situation and I'm hoping you can help. I am tasked with upgrading one of our PowerEdge R520's with a new hard drive. The server itself is a simple file server and has 4 2TB drives in a raid 5 array. The raid controller we have is a Perc H710. Seeing as how there is client data currently on the server, and it's used on a weekly basis, up-time and keeping the data intact/untouched is very important. The only way I see myself being able to incorporate that new hard drive, is if I create a virtual disk in OSMA. My issues is that there currently isn't a virtual disk so re-configuring isn't an option. If I create a virtual disk, do you see it causing any issues with the current raid configuration? I am almost positive I am just over-reacting here as I've never heard of software raid being able to re-initialize a raid configuration while the OS is in use. That must be done using the raid utility during bootup. Once the virtual disk is created, I should have no issues adding that additional hard drive. Should the virtual disk be created before I install the new hard drive or does it really matter? Any help will be greatly appreciated. Also, OSMA can see the disk that isn't part of the array and has it labeled as ready, the rest are online. Currently all I can do using OSMA is assign the drive as a hot spare. While that is useful, I need to be able to use the drive for storage. Again, any help will be greatly appreciated. Thanks.
Adding Physical Disk to Server