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EMC VNX5400 Hardware Information Guide
Disk-array enclosures
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
12
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.
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 mini-SAS ports
◆
One management (RJ-12) connector (not used in the VNX5400 platform)
6-Gb/s mini-SAS x4 ports
The DAE LCC supports two (one input and one output) 6-Gb/s mini-SAS x4 ports (labeled
6Gb SAS x4) 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 mini-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 SAS cable is keyed with an
in
and
out
connection to prevent incorrect 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.
12. The enclosure ID is sometimes referred to as the enclosure address (EA).