Disk-array enclosure expansion
67
EMC® VNX5300™ Hardware Information Guide
2U, 25 (2.5-inch) DAE rear view
On the rear, viewing from top to bottom, a 2U, 25 (2.5-inch) DAE includes the
following hardware components:
◆ Two LCCs (A and B)
◆ Two power supply/cooling modules
Figure 64 shows an example of the rear view of a 2U, 25 (2.5-inch) disk drive DAE.
Figure 64 Example of a 2U DAE with two LCCs and two power supply/cooing modules (rear view)
6-Gb/s SAS LCC The 6-Gb/s SAS LCC supports, controls, and monitors the DAE, and is the primary
interconnect management element. Each LCC includes connectors for input and
output to downstream devices.
As described previously, the LCCs in a DAE connect to the DPE and other DAEs with
6-Gb/s cables. The cables connect the LCCs in a system together in a daisy-chain
(loop) topology.
Disk drive fault (location 4) Amber On Fault has occurred
— Off No fault has occurred
Disk drive on/activity (location 5) Blue On Powering and powered up
Blinking Disk drive activity
Table 41 2U, 25 (2.5-inch) DAE and disk drive status LEDs (continued)
LED Color State Description
1 LLC B power supply LED (on, green) 7 LCC B bus ID
2 LCC B power supply fault LED (on, amber) 8 LCC B power and fault LEDs
3 LCC B AC power supply power in (recessed plug) 9 DAE enclosure ID
a
a. The DAE enclosure ID is sometimes referred to as the enclosure address (EA).
4 LCC B SAS connector link LED (on, blue) 10 LCC B management (RJ-12) connector to SPS
(not used)
5 LCC B SAS connector (input)
b
b. The SAS connector (input) is labeled with a double circle (dot) symbol.
11 LCC A power supply latch handle
6 LCC B SAS connector (output)
c
c. The SAS connector (output) is labeled with a double diamond symbol.
12 LCC A right latch handle
6 Gb
SAS
X4
#
6 Gb
SAS
X4
#
3
2
4
5
8
11
12
B
A
X4
X4
6
9 10
7
1
VNX-000280
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