IBM TotalStorage 2109 M12, Инструкция по установке и обслуживанию

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Attention: To protect against ac failure, you must have a minimum of one power
supply in slot 1 or slot 3 and one in slot 2 or slot 4. If you install only two power
supplies and you install both of them in slots that correspond to the same power
cable, unplugging a single power cable will power down the entire chassis.
Attention: Disassembling any part of the power supply voids the part warranty
and regulatory certifications.
Attention: Before you replace a power supply, determine whether adequate
power will be available to keep the chassis operating throughout the replacement. If
not, shut down both switches before you continue. If adequate power is abruptly
lost, such as through removal of a power supply, the entire switch is powered down.
The power off order that the powerOffListSet command designates does not work.
CAUTION:
No user-serviceable parts are inside the power supply.
Perform the following steps to determine the status of a power supply:
1. Check the LEDs on the power supply. See Table 5 on page 27 for information
about how to interpret the LEDs.
2. Check the power supply status by using the psShow command. The power
supply status displays OK, absent, or faulty. For additional information about the
psShow command, see the Brocade Fabric OS Reference .
AC power input connectors and ac power switches (circuit breaker)
The switch has two ac power input connectors, each with a green ac power switch
(circuit breaker). The left power input connector provides power to the power
supplies in slot 1 and slot 3. The right power input connector provides power to the
power supplies in slot 2 and slot 4. The power input connectors and their
associated power supplies are color-coded. The ac power switches light up green
when they are on.
Attention: Unplugging a single power cable can power down the entire switch,
depending on which power supply slots contain power supplies.
Two detachable power cords are provided with the cabinet and are customized for
the country or region in which the cabinet is installed.
Blower assemblies
Three blower assemblies that are located in the back of the chassis cool the switch.
The air enters through the vents in the blower assembly side of the chassis. The air
exits from the top vent on the port side of the chassis. Each switch requires a
minimum airflow of 350 cubic feet per minute.
The blower assemblies are hot-swappable if two blower assemblies remain
operating. If you remove more than one blower assembly at the same time, turn off
the switch to prevent overheating.
Note: The switch requires a minimum of two functioning blower assemblies during
operation. To ensure continuous adequate cooling, maintain three operating
blower assemblies at all times except for the brief period when replacing a
blower assembly. The 16–port cards automatically shut down if the
temperature range is exceeded.
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IBM TotalStorage SAN Switch: 2109 Model M12 Installation and Service Guide