Disk-array enclosures
EMC VNX8000 Hardware Information Guide 79
◆ LCC (A and B) mini-SAS connectors (input and output)
◆ LCC (A and B) mini-SAS link LEDs
◆ LCC (A and B) bus ID
◆ LCC (A and B) LEDs (power and fault)
◆ DAE enclosure ID
◆ LCC (A and B) management (RJ-12) connector (not used in VNX7600)
◆ LCC (A and B) latch handle
Figure 61 Example of 2U, 25 (2.5-inch) disk drive DAE (rear view)
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 connects to the SPE and other DAEs with
6-Gb/s SAS cables. The cables connect the LCCs in a system in a daisy-chain topology.
Internally, each DAE LCC connects to the drives in its enclosure in a point-to-point fashion
through a switch. The LCC independently receives and electrically terminates incoming
signals. For traffic from the system’s storage processors, the LCC switch passes the signal
from the input port to the drive being accessed; the switch then forwards the drive output
signal to the port.
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
5 LCC B SAS connector (input); labeled with
a double circle (dot) symbol .
11 LCC A power supply latch handle
6 LCC B SAS connector (output); 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
To Next Page
Loading...
Need help?
General
