114 EMC VNX8000 Hardware Information Guide
Disk-array enclosures
ICM
The 4U, 60 DAE external interfaces are made through the ICM. The ICM is the primary
interconnect management element (Figure 96).
The ICM is a plug-in module that includes a USB connector, RJ-12 management adapter,
Bus ID indicator, enclosure ID indicator, two input mini-SAS connectors, and two output
mini-SAS connectors with corresponding LEDs indicating the link and activity of each
mini-SAS connector for input and output to devices.
The ICM is hot-swapable. It has a built-in thumbscrew for ease of installation and removal.
Figure 96 Example of ICM connectors and LEDs (rear view)
As described previously, the ICMs in a 4U, 60 DAE connect to the SPE and other DAEs with
6-Gb/s SAS cables. The cables connect the ICMs in a system in a daisy-chain topology.
1 ICM USB connector 6 Four ICM mini-SAS input/output connector
LEDs (bi-color blue/green)
2 ICM management (RJ-12) connector to SPS 7 Two ICM mini-SAS output connectors;
labeled with a double diamond symbol
. The top port is labeled 0 and the
bottom port is labeled 1.
3 ICM bus ID indicator (yellowish green) 8 ICM thumbscrew
4 Two ICM bus ID LEDs (power, green; fault,
amber)
9 Two ICM mini-SAS input connectors;
labeled with a double circle (or dot)
symbol
. The top port is labeled 0 and
the bottom port is labeled 1.
5 ICM enclosure ID indicator (blue)
1
2
3
4
5
9
6
7
VNX-000629
8
0
0
1
1
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