Lenovo 7X15, Setup Manual

Page: 45 / 104

Step 5. Lock the drives into place by closing the release handle until it clicks.
Step 6. Check the drive activity LEDs to make sure that the drive is operating correctly.
Install a DIMM
Use this information to install a DIMM.
See “Memory module installation order” in
Memory Population Reference
for detailed information about
memory configuration and setup.
Attention:
Memory modules are sensitive to static discharge and require special handling. In addition to the
standard guidelines for “Handling static-sensitive devices” on page 31 :
• Always wear an electrostatic-discharge strap when removing or installing memory modules. Electrostatic-
discharge gloves can also be used.
• Never hold two or more memory modules together so that they touch. Do not stack memory modules
directly on top of each other during storage.
• Never touch the gold memory module connector contacts or allow these contacts to touch the outside of
the memory-module connector housing.
• Handle memory modules with care: never bend, twist, or drop a memory module.
• Do not use any metal tools (such as jigs or clamps) to handle the memory modules, because the rigid
metals may damage the memory modules.
• Do not insert memory modules while holding packages or passive components, which can cause package
cracks or detachment of passive components by the high insertion force.
Before installing a DIMM, make sure that you understand the required installation order, depending on
whether you are implementing memory mirroring, memory rank sparing, or independent memory mode. See
ThinkSystem SN850 Compute Node Memory Population Reference
for the required installation order.
If you are installing an optional processor, install it before installing DIMMs. See “Install a processor-heat-
sink module” on page 47 .
Before you install a DIMM, complete the following steps:
1. Read “Installation Guidelines” on page 28 to ensure that you work safely.
2. Carefully lay the compute node on a flat, static-protective surface, orienting the compute node with the
bezel pointing toward you.
3. Remove the compute node cover (see “Remove the compute node cover” on page 32 for instructions).
4. If you are installing DCPMMs for the first time, follow the instructions in “DC Persistent Memory Module
(DCPMM) setup” on page 40 so that the system supports DCPMMs.
To install a DIMM, complete the following steps:
Attention:
Memory modules are sensitive to static discharge and require special handling. In addition to the
standard guidelines for “Handling static-sensitive devices” on page 31 :
• Always wear an electrostatic-discharge strap when removing or installing memory modules. Electrostatic-
discharge gloves can also be used.
• Never hold two or more memory modules together so that they touch. Do not stack memory modules
directly on top of each other during storage.
• Never touch the gold memory module connector contacts or allow these contacts to touch the outside of
the memory-module connector housing.
• Handle memory modules with care: never bend, twist, or drop a memory module.
Chapter 3
.
Compute node hardware setup
37