IBM Storwize V7000 Unified Problem Determination Manual page 83

v Do not attempt to lift an object that you think is too heavy for you. If you have
to lift a heavy object, observe the following precautions:
– Make sure that you can stand safely without slipping.
– Distribute the weight of the object equally between your feet.
– Use a slow lifting force. Never move suddenly or twist when you lift a heavy
object.
– To avoid straining the muscles in your back, lift by standing or by pushing
up with your leg muscles.
v Make sure that you have an adequate number of properly grounded electrical
outlets for the PDUs.
v Back up all important data before you make changes to disk drives.
v Have a small flat-blade screwdriver available.
v To view the error LEDs on the system board and internal components, leave the
file module connected to power.
v You do not have to turn off the file module to install or replace hot-swap fans,
redundant hot-swap ac power supplies, or hot-plug Universal Serial Bus (USB)
devices. However, you must turn off the file module before performing any
steps that involve removing or installing adapter cables or non-hot-swap
optional devices or components.
v Blue on a component indicates touch points, where you can grip the component
to remove it from or install it in the file module, open or close a latch, and so
on.
v Orange on a component or an orange label on or near a component indicates
that the component can be hot-swapped, which means that if the file module
and operating system support hot-swap capability, you can remove or install the
component while the file module is running. (Orange can also indicate touch
points on hot-swap components.) See the instructions for removing or installing
a specific hot-swap component for any additional procedures that you might
have to perform before you remove or install the component.
v When you are finished working on the file module, reinstall all safety shields,
guards, labels, and ground wires.
Node reliability guidelines
To help ensure proper cooling and system reliability, make sure that:
v Each of the drive bays has a drive or a filler panel and electromagnetic
compatibility (EMC) shield installed in it.
v If the server has redundant power, each of the power-supply bays has a power
supply installed in it.
v There is adequate space around the server to allow the server cooling system to
work properly. Leave approximately 50 mm (2.0 in.) of open space around the
front and rear of the server. Do not place objects in front of the fans. For proper
cooling and airflow, replace the server cover before turning on the server.
Operating the server for extended periods of time (more than 30 minutes) with
the server cover removed might damage server components.
v You have followed the cabling instructions that come with optional adapters.
v You have replaced a failed fan within 48 hours.
v You have replaced a hot-swap drive within 2 minutes of removal.
v You operate the server with the air baffles installed. Operating the server
without the air baffles might cause the microprocessor to overheat.
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Chapter 4. File module