EMC2 VNXe3150, Hardware Information Manual, Page: 49 / 56

System component description 47
Overview
Figure 33 DAE with two LCCs and two power supply/cooling modules (rear view)
Note: Figure 33 , looking from the rear of the DAE, shows LCC B located on the top and
LCC A located on the bottom.
Note: If the target drive is not in the LCC enclosure, the switch passes the input signal
directly to the output port.
Each LCC independently monitors the environmental status of the entire enclosure, using
a microcomputer-controlled monitor program. The monitor communicates the status to
the storage processor, which polls disk enclosure status. LCC firmware also controls the
SAS PHYs and the disk-module status LEDs.
As shown in Figure 33 , an enclosure ID
10
indicator is located on each LCC. Each LCC also
includes a bus (back-end port) identification indicator. The SP initializes the bus ID when
the operating system is loaded.
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 or address
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 (output); labeled
with a double black diamond symbol
.
11 LCC A power supply latch handle
6 LCC B SAS connector (input); labeled with
a double black circle (or dot) 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
10. The enclosure ID is sometimes referred to as the enclosure address (EA).