EMC VNX Series Hardware Information Manual page 80

Disk-array enclosures
80 EMC VNX8000 Hardware Information Guide
Note: If the target drive is not in the LCC's 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 61 on page
Each LCC also includes a bus (back-end port) identification indicator. The SP initializes
the bus ID when the operating system is loaded.
LCC input/output ports and connectors — The 2U, 25 (2.5-inch) DAE LCC supports the
following I/O ports on the rear:
Two 6-Gb/s PCI Gen 2 SAS ports
◆
One management (RJ-12) connector to the SPS
◆
6-Gb/s SAS x4 ports
The DAE LCC supports two (one input and one output) 6-Gb/s SAS x4 ports (labeled
6Gb SAS 0 x4 and 0 x 1) on the rear of each LCC (A and B). This port provides an interface
for SAS and NL-SAS drives on the DAE. This port is a 26-circuit SAS small form-factor 8088
(SFF-8088) specification (socket or receptacle) using an SFF-8088 specification mini-SAS
26-circuit cable (plug) with a pull tab.
Note: Each mini-SAS cable is keyed with an
cabling.
A video describing how to properly connect mini-SAS HD cables and mini-SAS cables to a
DPE and a DAE, respectively, in a VNX product is available online at:
https://edutube.emc.com/, in the Search box, type in Mini-SAS HD Cable Connectivity.
The video will start immediately.
Note: The first half of the video shows an example of how to connect a mini-SAS HD cable
to a mini-SAS HD port while the second half shows how to connect a mini-SAS cable to a
DAE LCC port.
13. The enclosure ID is sometimes referred to as the enclosure address (EA).
13
79, an enclosure ID indicator is located on each LCC.
in out
and connection to prevent incorrect