ATTO Technology Diamond Storage Array VT-Class - Manual (Page 81)

70
Hot swap hardware
Power Supplies
CAUTION CAUTION
Do not leave empty openings on the front or rear
of the Diamond-VT under any circumstances.
Empty openings affect airflow and may cause
the unit to overheat and shut down.
WARNING
Hazardous voltage and stored energy hazard
when removing power supplies.
In a system with at least one operational power supply,
the other power supply can be successfully removed
and replaced without powering the system down and
with no loss of array functionality. The green activity
LED on the front of the system management card
identifies the operational status of each power supply
(Green means the power supply is operating
correctly).
Note
System command overlap is discontinued across
some drives when only one power supply is
operational.
Labels on the rear of the Diamond-VT point to the
appropriately related A and B power supplies.
1 Identify the power supply to be swapped on the
rear of the unit.
2 Turn off the power supply on/off switch.
3 Disconnect AC line cord.
4 Unscrew the two screws on the power supply
with the appropriate tool.
5 Pull power supply out of chassis using the
power supply module handle.
6 Install new power supply in chassis with proper
orientation (Power supply is keyed and can only
be inserted one way).
7 Tighten the two screws on the power supply
with the appropriate tool.
8 Connect AC line cord
9 Turn on power supply switch.
10 Verify correct operation by observing that the
green light on the rear of the power supply is lit
and that the appropriate power
supply light on the system
management card on the front of the
unit is lit.
Note
It takes up to 30 seconds for the
system to recognize the insertion or
removal of a power supply and change the LED on
the system management board. The CLI will issue
messages about the change (see
Diagnostics,
Upgrade and Maintenance on page 57).
Blower Assemblies
CAUTION CAUTION
Do not leave empty openings on the front or rear
of the Diamond-VT under any circumstances.
Empty openings affect airflow and may cause
the unit to overheat and shut down.
The Diamond-VT contains two blower assemblies.
The blowers are critical to proper array cooling
operation. However, the array can operate with only
one functional blower within certain ambient
temperatures. The blowers are electronically
connected to the power supplies and a power supply
will not run without its corresponding blower
assembly operating. This means if the blower adjacent
to power supply A is removed, the ‘A’ power supply
will shut down, turning off the corresponding LED on
the system management card. The CLI will issue a
message about the power supply being turned off.
To replace a blower assembly
1
Unscrew the two screws on the blower
assembly with the appropriate tool.
2 Pull the blower assembly out of chassis.
3 Install new blower assembly in chassis with
proper orientation (Blower assembly is keyed
and can only be inserted one way).
4 Tighten the two screws on the blower assembly
with the appropriate tool.
5 Verify correct operation by observing that the
green light is lit on the rear of the power supply,
and that the appropriate power supply green
light on the system management card on the
front of the unit is also on.
Note
It takes up to 30 seconds for the system to
recognize the insertion or removal of a power
supply and change the LED on the system
1 2 3 4 5 6 7 8 9 10 11 12
Drive Sleds
Management Card