EMC VNX Series Hardware Information Manual page 128

Disk-array enclosures
128 EMC VNX8000 Hardware Information Guide
Figure 110 shows the location of the status (fan fault) LED on the 4U, 60 (2.5- or 3.5-inch)
DAE fan control module.
Figure 110 Example of a 4U, 60 (2.5-3.5-inch) DAE fan control module showing the fan fault LED
Table 53 describes the 4U, 60 (2.5- or 3.5-inch) DAE fan fault LED.
Table 53 Fan control module fan fault LED
Led Color
Fan fault Amber
—
LCC
Each 4U, 60 (2.5- or 3.5-inch) DAE includes two LCCs. The primary function of each LCC is
to be a SAS expander providing services to 30 drive slots per LCC in the 4U, 60 (2.5- or
3.5-inch) DAE.
The LCC implements Common Disk Enclosure Subsystem (CDES). CDES consists of a
6-Gb/s SAS expander, Common Disk Enclosure FPGA (CDEF), and supporting logic.
The primary components on the LCC are the two SAS expanders. A four-lane SAS wide port
connecting each expander to the ICM expander on the same side (A or B) of the 4U, 60
DAE is available. 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.
Fan control module
(cooling module)
status LED
VNX-000662
State Description
On Fault detected, one or more fans faulted
Off No fault detected, fans operating normally