Identifying Control Module Failures; Understanding Failover Behavior - Dell Equallogic PS6000 Hardware Maintenance

PS6000 Hardware Maintenance
Table 3-2: Ethernet Port LED Descriptions
LED Location
Left side of each port.
Right side of each port.

Identifying Control Module Failures

You can identify a failure in a control module by:
• LEDs. See Interpreting Control Module LEDs on page 3-2.
• Messages. A message on the LCD panel (located behind the bezel), on the
console, in the event log, or in the Group Manager GUI Alarms panel
describes a control module failure.
• Group Manager GUI and CLI output. The Member Controllers window or
the
member select show controllers
control module status
When viewed from the rear of the array and from left to right, control modules are
numbered 1 and 0. See Figure 1-2.
If a control module fails, see your PS Series support provider for a replacement.

Understanding Failover Behavior

Only one control module is active (serving network traffic) at one time. Each
control module includes a battery-backed write cache for storing recently-used
data. For redundancy, the cache on the secondary control module mirrors the data
that is stored in the cache on the active control module.
Color Description
Off No power or not connected to network.
Green Connected to network.
Off No power, not transmitting, or not receiving.
Green Transmitting or receiving.
not installed
Maintaining Control Modules
command output shows the
.
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