The HP Storageworks XP (XP = eXtended Platform) is a computer data storage disk array sold by Hewlett Packard Enterprise using Hitachi Data Systems hardware and adding their own software to it. It's based on the Hitachi Virtual Storage Platform and targeted towards enabling large scale consolidation, large database, Oracle, SAP, Exchange, and online transaction processing (OLTP) environments. The XP Disk Array family Used to be called P9000 XP, to match with other disk array products they sold at the time (P2000, P4000, P6000 and P10000). XP 48 RAID 0/1 and RAID 5 support 18 GB 15,000 RPM, 73 GB 10,000 rpm and 181 GB 7,200 rpm Fibre Channel drives Crossbar Architecture (3.2 GB/s) High capacity scalability—up to 48 disks, 8.7 TB and 24 host connectivity ports up to 16 GiB of battery-protected (48 hours minimum), mirrored write cache XP 128 a mixture of disk drives configured as RAID 1 (2D+2D and 4D+4D) and RAID 5 (3D+1P and 7D+1P). from 5 drives to 128 for up to 36 TB of usable storage capacity, 4 drives at a time heterogeneous connectivity via Fibre Channel, iSCSI, FICON and ESCON all the software functionality of the larger XP 1024 with a smaller footprint. up to 64 GiB of battery-protected (48 hours minimum), mirrored write cache XP 256 RAID 0/1 and RAID 5 support from 17 GB to 9 TB of storage space connectivity via SCSI (8 to 32 ports) or Fibre Channel (4 to 16 ports) up to 16 GiB of battery-protected (48 hours minimum), mirrored write cache XP 512 RAID 0/1 and RAID 5 support 18 GB, 15,000 rpm, 73 GB 10,000 rpm and 181 GB 7,200 rpm Fibre Channel drives High capacity scalability—up to 512 disks, 93 TB and 32 host connections up to 32 GiB battery-protected, mirrored write cache XP 1024 a mixture of disk drives configured as RAID 1 (2D+2D and 4D+4D) and RAID 5 (3D+1P and 7D+1P). up to 1024 disk drives for 288 GB to 149 TB raw and 144 TB to 129 TB of usable storage capacity in a single array heterogeneous connectivity via Fibre Channel, iSCSI, FICON and ESCON up to 128 GiB battery-protected (48 hours minimum), mirrored write cache XP 10000 a mixture of disk drives configured as RAID 1 (2D+2D and 4D+4D), RAID 5 (3D+1P and 7D+1P) and RAID 6 (6D+2P) up to 240 disk drives for 69 TB of capacity virtualization technology