Lenovo 6241, Installation And Service Manual

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• You have replaced a hot-swap drive within 2 minutes of removal.
• You have replaced a failed hot-swap power supply within 2 minutes of removal.
• You do not operate the server without the air baffles installed. Operating the server without the air baffles
might cause the device to overheat.
Handling static-sensitive devices
Use this information to prevent damage to the server and other electronic devices from static electricity.
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:
• Limit your movement. Movement can cause static electricity to build up around you.
• Handle the device carefully, holding it by its edges or its frame.
• Do not touch solder joints, pins, or exposed circuitry.
• Do not leave the device where others can handle and damage it.
• While the device is still in its static-protective package, touch it to an unpainted metal surface on the
outside of the server for at least 2 seconds. This drains static electricity from the package and from your
body.
• Remove the device from its package and install it directly into the server 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 server cover or on a metal surface.
• Take additional care when you handle devices during cold weather. Heating reduces indoor humidity and
increases static electricity.
Installing a memory module
This information describes the type of DIMMs that the server supports and other information that you must
consider when you install DIMMs in the server.
The following notes describe the types of dual inline memory modules (DIMMs) that the server supports and
other information that you must consider when you install DIMMs (see “Compute book” on page 29 for the
location of the DIMM connectors):
Note: The information and installation procedures in this documentation apply to both the 4-socket and the
8-socket configurations of the server, unless otherwise specified. Most of the illustrations in the
documentation show the 4-socket configuration of the server.
• Confirm that the server supports the DIMM that you are installing (see
http://www.lenovo.com/
serverproven/
).
• When you install or remove DIMMs, the server configuration information changes. When you restart the
server, the system displays a message that indicates that the memory configuration has changed. You
can use the Setup utility to view the server configuration information, see “Using the Setup utility” on page
123 for more information.
• Server models with the DDR3 compute book support error correcting code (ECC) for up to 96 industry-
standard PC3-12800R 1600 MHz, PC3L-12800 1600 MHz or PC3L-10600 1333 MHz Load Reduced (LR),
single-rank, dual-rank, or quad-rank, DDR3 (third-generation double-data-rate), registered, synchronous
dynamic random access memory (SDRAM) DIMMs.
• Server models with the DDR4 compute book support error correcting code (ECC) for up to 96 industry-
standard PC4-17000 2400 MHz, single rank x4, dual rank x4, quad rank x4, single rank x8, dual rank x8,
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System x3850 X6 and x3950 X6 Installation and Service Guide