12 VNX5500 Hardware Information Guide
System component description
System component description
This section provides the exact details of the Block and File (Unified) VNX5500 platform
components. These details include illustrations and descriptions of the front and rear
connectors and the LED indicators.
Note: In the following sections, the illustrations and corresponding tables describe these
individual components. These descriptions are for illustrative purposes only.
VNX5500 front view
As previously described, the Block and File (Unified) VNX5500 platform is made up of a
DPE, one dual 1U SPS, one to two Control Stations, and one to two DMEs with one, two, or
three Data Movers. The following sections will describe the front (Figure 2 on page 6) view
of the Block and File (Unified) VNX5500 platform components separately.
DPE front views
The Block and File (Unified) VNX5500 platform can have one of two types of 3U disk drive
DPEs.
When calculating the number of drives for your Block and File (Unified) VNX5500 platform,
the 3U DPE is included in the total drive slot quantity of 240 to 250 drives. If the total drive
slot quantity exceeds 240 or 250, you will not be able to add another DAE. Refer to the
“Disk-array enclosure” section on page 71 for more information about the DAEs available
for the Block and File (Unified) VNX5500 platform.
Each Block and File (Unified) VNX5500 platform 3U DPE comprises the following
components:
◆ Drive carrier
◆ Disk drives
◆ Midplane
◆ Storage processor (SP) CPU
◆ Storage processor (SP) power supply
◆ EMI shielding
Drive carrier
The disk drive carriers are metal and plastic assemblies that provide smooth, reliable
contact with the enclosure slot guides and midplane connectors. Each carrier has a
handle with a latch and spring clips. The latch holds the disk drive in place to ensure
proper connection with the midplane. Disk drive activity/fault LEDs are integrated into the
carrier. The “3U, 15 (3.5-inch) DPE” section on page 14 or the “3U, 25 (2.5-inch) DPE”
section on page 15 provides more information.
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