Ah, I noticed that just now in the thread title ... might want to put all relevant details inside your post, as the title for some reason isn't visible when replying. Then ... maybe. Non-certified disks are certainly not guaranteed to work, and the less mainstream you go (like 8TB drives), the more likely there will be an incompatibility. I would recommend getting them from someplace with a good return policy and trying just one to test.
I am attempting to extend the life of an old PE 2950III with 64GB of RAM and Windows Server 2012 R2 that is used as a repository for duplicates of backups. Has anyone successfully used 8TB Enterprise-class drives from Hitachi, Seagate, or WD with this controller successfully?  The server is currently configured to use Windows Storage Pools, however I am considering migrating to ESXi 6.0 and vSphere. I have read reports that 6TB drives have worked successfully, but since I will be purchasing 6 drives I would like to optimize the available storage space if possible if the cost per TB makes financial sense going with an 8TB disk.  If these drives will work, does the card need to be flashed?  I have only read reports of flashing with alternate firmwares on this forum and have personally only used Dell's official flash releases.  Thank you. 
Will the PERC H710P support third party Enterprise 8TB SATA disks?