84 VNX5500 Hardware Information Guide
Disk-array enclosure
Table 46 describes the 2U, 25 (2.5-inch) DAE power supply/cooling module LEDs.
The power supply/cooling modules are located to the left and right of the LCCs. The units
integrate independent power supply and dual-blower cooling assemblies into a single
module.
Each power supply is an auto-ranging, power-factor-corrected, multi-output, offline
converter with its own line cord. Each supply supports a fully configured DAE and shares
load currents with the other supply. The drives and LCCs have individual soft-start
switches that protect the disk drives and LCCs if they are installed while the disk
enclosure is powered up.
The enclosure cooling system includes two dual-blower modules. If one blower fails, the
others will speed up to compensate. If two blowers in a system (both in one power
supply/cooling module, or one in each module) fail, the DAE goes offline within two
minutes.
The 2U, 25 (2.5-inch) DAE 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 SAS x4 ports
◆ One management (RJ-12) connector
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 SAS cable is keyed with an
in
and
out
connection to prevent incorrect cabling.
Table 46 2U, 25 (2.5-inch) DAE AC power supply/cooling module LEDs
Led Color State Description
Power fault Amber On Fault
Blinking During power shutdown and during overvoltage and
undervoltage protection (OVP/UVP) fault
— Off No fault or power off
Power on Green On Power on
—OffPower off
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