The solution's performance using SSD disks is fantastic, but its performance using HDD disks is not so good. I don't know if that is because of some problem with the controller. We have a lot of customers that use 3PAR with HDD disks, and they don't have any problems. Unlike 3PAR, HPE Primera storage only supports rate six. Whenever you have a problem with rate six, you need to spread and make a lot of copies. That could be the reason you have problems when you need to do an ungrouping of one disk. That could be the reason the performance was not good. The experience of HPE Primera storage with HDD disks using rate six was not good. However, the experience of HPE Primera storage using rate six with SSD disks was fantastic.

