Kontron TIGW1U Carrier Grade Server - Manual (Page 36)

TIGW1U server—Server Installations and Upgrades
Kontron Carrier Grade Server TIGW1U
Product Guide, rev. 1.3 December 2009
36
3.4.2.3 Sparing Mode Memory Configuration
The Memory Controller Hub (MCH) provides memory sparing capabilities. Sparing is a
RAS feature that involves configuring a DIMM to be placed in reserve so it can be use to
replace a DIMM that fails. The following conditions apply:
• DIMMA1 and DIMMB1 must be identical in organization, size and speed.
• DIMMA2 and DIMMB2 must be identical in organization, size and speed.
• DIMMA1 and DIMMA2 need not be identical in organization, size and speed.
• DIMMB1 and DIMMB2 need not be identical in organization, size and speed.
• Sparing should be enabled in the BIOS setup; the BIOS will configure Rank Sparing
Mode.
• The larger of the pairs {DIMMA1, DIMMB1} and {DIMMA2, DIMMB2} will be
selected as the spare pair unit.
3.4.3 Installing and Removing Memory DIMMs
The silkscreen on the board for the DIMMs displays DIMMA1, DIMMA2, DIMMA3,
DIMMB1, DIMMB2 and DIMMB3, starting from the inside (left side) of the server board.
DIMMB3 is the socket closest to the outside edge of the server board.
3.4.3.1 Installing DIMMs
To install DIMMs, follow these steps:
1. Remove the air duct. For instructions, see Section 3.2.5, “Removing the Processor
Air Duct” on page 26 .
2. Locate the DIMM sockets on the server board and select the socket where you want
to install the DIMM. (See Figure 9 and Figure 19 .)
3. Open both DIMM socket levers. (“A” in Figure 19 )
Figure 19. Installing Memory DIMMs
Channel 1
DIMM A1
DIMM A2
DIMM B3
DIMM B2
DIMM A3 DIMM B1
E
A
C
D B
TS000224
Channel 0