Lenovo Flex System EN2092, User Manual, Page: 17 / 56

v
Each of the module bays on the rear of the Flex System chassis contains either a
module or a filler module.
v
A removed hot-swap module is replaced with an identical module or filler
module within 1 minute of removal.
v
A removed hot-swap compute node is replaced with another compute node or
filler node within 1 minute of removal.
v
The ventilation areas on the sides of the compute node are not blocked.
v You have followed the reliability guidelines in the documentation that comes
with the Flex System chassis.
Cable requirements for the switch are described in the Configuration and Options
Guide at http://www.ibm.com/servers/eserver/xseries/cog/. See the
documentation that comes with the Flex System chassis for cable-routing
information.
Handling static-sensitive devices
Attention: Static electricity can damage the Flex System chassis 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 electrostatic discharge, observe the following
precautions:
v
Limit your movement. Movement can cause static electricity to build up around
you.
v
Handle the device carefully, holding it by its edges or its frame.
v
Do not touch solder joints, pins, or exposed printed circuitry.
v
Do not leave the device where others can handle and damage it.
v
While the device is still in its static-protective package, touch it to an unpainted
metal surface of the Flex System chassis or an unpainted metal surface on any
other grounded rack component in the rack that you are installing the device in
for at least 2 seconds. This drains static electricity from the package and from
your body.
v
Remove the device from its package and install it directly into the Flex System
chassis without setting down the device. If it is necessary to set down the
device, put it back into its static-protective package. Do not place the device on
the Flex System chassis or on a metal surface.
v
Take additional care when you handle devices during cold weather. Heating
reduces indoor humidity and increases static electricity.
v
Some types of Flex System chassis come with electrostatic discharge (ESD)
connectors. If your unit is equipped with an ESD connector, see the
documentation that comes with the Flex System chassis for using the ESD
connector.
Installing a switch
Note: The following illustration shows how to install a switch in a Flex System
chassis. The appearance of your Flex System chassis might be different; see
the documentation for your Flex System chassis for additional information.
Use the following instructions to install a switch in the Flex System chassis. You
can install a switch while the Flex System chassis is powered on. For redundancy
Chapter 2. Installing the switch
7