Host Channel Led Link/Rate Indications; Raid Controller Module-Additional Features; Battery Backup Unit - Dell POWERVAULT MD3600F Owner's Manual

Item Component
20 FCIN port 0
LED 1 / LED 0
21 SAS OUT port
link/fault LED

Host Channel LED Link/Rate Indications

Below each FC port is a pair of LED indicators. The status of any FC port can
be determined by applying Table 3-1 to the condition of each LED pair.
Table 3-1. LED Status Indicators
LED 1
Off
Off
On
On
RAID Controller Module—Additional Features

Battery Backup Unit

Each RAID controller contains a two-cell Lithium ion nanopolymer battery
backup unit (BBU). It provides power to the RAID controller module in the
event of a power outage, see "RAID Controller Module Backup Battery Unit"
on page 255.
NOTE:
For virtual disks, the RAID controller firmware changes the data cache
setting based on the state of the battery. If the battery is missing or does not have
sufficient charge, the controller flushes the cache and sets the write cache
attribute to Write Through for all virtual disks. When the battery is replaced, Write
Back is re-enabled.
36
Planning: RAID Controller Modules
Function
Displays link rate and port status per the accompanying
host channel LED link/rate table.
Lights green when all four links are connected.
Lights amber when one to 3 links are disconnected.
Off when all links in the port are disconnected or cable is
disconnected.
LED 0
Off
On
Off
On
CommRate
Link down
2 Gbps
4 Gbps
8 Gbps