EMC VNX Series Hardware Information Manual page 80

Disk-array enclosure
80 VNX5500 Hardware Information Guide
Management (RJ-12) connector
Note: The management Ethernet (RJ-12) LCC to SPS connector is not used at this time.
Figure 69 shows the management port connector (labeled with two symbols; one
depicting a telephone handset with a line through it and the other depicting a battery).
The telephone handset with a line through it symbol means that you cannot connect
telephone type circuits to this connector (see the following WARNING). This port connects
the LCC (A and B) ports to the SPS (A and B) ports, respectively.
The SPS (RJ-12) port is a LAN port not a WAN port. LAN ports contain safety extra-low
voltage (SELV) circuits, and WAN ports contain telephone-network voltage (TNV) circuits.
An RJ-45 (or TNV-type) looks the same as the RJ-12 except for two very important
differences. An RJ-45 is an 8-wire modular jack. The RJ-12 is a six-wire modular jack. The
RJ-45 plugs and jacks are wider than their RJ-12 counterparts - 7/16" vs 3/8". An RJ-45
plug won't fit into an R-J12 jack. But an RJ-12 plug will fit into an RJ-45 jack. Use caution
when connecting cables. To avoid electric shock, do not attempt to connect TNV circuits
to SELV circuits.
VNX-000106
Figure 69 LCC RJ-12 port
The cable connecting the LCC to the SPS is an RJ-12 to RJ-12. It has an RJ-12 adapter (LCC
side) on one end and a RJ-12 (SPS side) adapter on the other end.
LCC enclosure ID (enclosure address) and bus ID
On the rear of the LCC (A and B), an LCC enclosure ID (or enclosure address) indicator is
provided. This ID indicator is a seven-segment LED display for displaying decimal
numbers. The LCC enclosure ID appears on both LCCs (A and B) which is the same ID
number. The enclosure ID is set at installation.
Each LCC includes a bus (loop) identification indicator. This indicator includes two
seven-segment LED displays for displaying decimal numbers. The SP initializes the bus ID
when the operating system is loaded
Figure 70 Example of LCC B enclosure ID and bus ID
(Figure 70).
Bus (loop) status LEDs
Bus (loop) ID LCC enclosure ID
LCC B
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VNX-000107