605475-001 HP MSA2 2-TB 6G 7.2K 3.5 DP MDL SAS HDD - P/N 719770-002

Description:
HP P2000 2TB 3.5-inch Serial Attached SCSI (SAS) LFF 6G
Dual Port Midline (MDL) Hot-Plug 7.2K MSA2 Hard Drive in HP MSA2 drive tray with interposer connector (as pictured )
For the HP MSA 1040/2040 SAN Storage Array
Genuine HP serial number and MSA firmware

Part Number(s)
Option Part# AW555A
Spare Part# 605475-001
Assembly Part# 604091-001
Model# ST2000NM0001

Note:
For use only in HP StorageWorks Systems
Modular Smart Array MSA2 1040/2040/P2000 Systems only.

Overview:
HP MSA2 / MSA2000 controller enclosures and large form factor expansion enclosures accept unique HP SAS disk drive modules with different firmware and different trays than other HP storage arrays and Proliant servers. The disk drives have SAS interposers attached to the back which convert the native dual port SAS interface to an SCA-40 connector. While this SCA-40 connector has the same shape as a Fibre Channel (FC) connector, the drives are NOT utilizing the FC protocol. If you look closely at the interposer, the circuitry is rather simplistic and no bridge / translator chip is attached. The interposer is, more or less, acting as a signal filter and port relocator to connect to the MSA2's proprietary backplane.