Lenovo 3815, 3836, 3809, 3826, 3724, 3824 Number of installed DIMMs Microprocessors Dimm connector

The following table lists the installation sequence for installing DIMMs in memory-mirroring mode.

Table 9. Memory-mirroring mode DIMM population sequence

	Number of installed
DIMMs	microprocessors	DIMM connector
First pair of DIMMs	1	3, 6
Second pair of DIMMs	1	2, 5
Third pair of DIMMs	2	11, 14
Fourth pair of DIMMs	2	10, 13

Note: DIMM connectors 7, 8, 15, and 16 are not used in memory-mirroring mode and DIMM connectors 1, 4, 9, and 12 are not functional on this server. Do not install DIMMs in these connectors.

vWhen 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.

Attention: Static electricity that is released to internal server components when the server is powered on might cause the server to stop, 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 server with the power on.

To install a DIMM, do the following:

1.Turn off the server and all attached devices; then, disconnect all power cords and external cables.

2.Unlock and remove the side cover (see “Removing the side cover” on page 43).

3.Rotate the power-supply cage assembly out of the chassis. Lift up the power-supply cage handle and pull the power-supply cage assembly all the way up until the retainer latch locks the cage in place on the chassis.

92ThinkServer TD200 Types 3724, 3808, 3809, 3815, 3817, 3824, 3826, 3836: Installation and User Guide