6
Hardware for FC4700 Storage Systems
6-3
Storage-System Hardware
Hardware for FC4700 Storage Systems
The primary hardware component for FC4700 storage is a ten-slot
disk-array processor enclosure (DPE) with two storage processors
(SPs). Each FC4700 SP has two ports (front-end ports for server or
switch connection) and two back-end buses that run the disks.
A DPE can support up to nine separate 10-slot enclosures called disk
array enclosures (DAEs) for a total of 100 disks.

Storage Hardware — Rackmount DPE-Based Storage Systems

The DPE rackmount enclosure is a sheet-metal housing with a front
door, a midplane, and slots for the storage processors (SPs), link
control cards (LCCs), disk modules, power supplies, and fan packs.
All components are customer replaceable units (CRUs) that can be
replaced under power. The DPE rackmount model looks like the
following figure.
Figure6-2 DPE Storage-System Components — Rackmount Model
EMC1746
Network
ports
Disk drive
fan pack
Storage
processors
LCC
LCC
Power
supplies
Rear
Disk modules
(front door
removed
for clarity)
Front