IBM Storwize V7000 Unified Series Problem Determination Manual page 79

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.
Working inside the file module with the power on
Attention: Static electricity that is released to internal file module components
when the file module is powered-on might cause the file module to halt, which
could result in the loss of data. To avoid this potential problem, always use an
electrostatic-discharge wrist strap or other grounding system when working inside
the file module with the power on.
The file module supports hot-plug, hot-add, and hot-swap devices and is designed
to operate safely while it is turned on and the cover is removed. Follow these
guidelines when you work inside a file module that is turned on:
v Avoid wearing loose-fitting clothing on your forearms. Button long-sleeved
shirts before working inside the file module; do not wear cuff links while you
are working inside the file module.
v Do not allow your necktie or scarf to hang inside the file module.
v Remove jewelry, such as bracelets, necklaces, rings, and loose-fitting wrist
watches.
v Remove items from your shirt pocket, such as pens and pencils, that could fall
into the file module as you lean over it.
v Avoid dropping any metallic objects, such as paper clips, hairpins, and screws,
into the file module.
Handling static-sensitive devices
Attention: Static electricity can damage the server and other electronic devices. To
avoid damage, keep static-sensitive devices in their static-protective packages until
you are ready to install them.
To reduce the possibility of damage from electrostatic discharge, observe the
following precautions:
v Limit your movement. Movement can cause static electricity to build up around
you.
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Chapter 4. File module