The DS8000 arrays are at the absolute top end of the monolithic storage array tree, and are on the same general level as EMC’s VMAX and HDS’ VSP arrays.
Also, HP would say, its StoreServ 20800 duo are on par with it, as well as InfiniDat’s Infinibox.
We shouldn't forget Huawei's 18000 either.
nor FUJITSU's DX8000 S3 series!!!!!