Dimm Configuration; Replacing A Dimm; Removing And Replacing The Memory Mezzanine Board - HP Integrity BL870c User's & Service Manual

4. Slots DIMM 3A and DIMM 3D
5. Slots DIMM 4A and DIMM 4D
6. Slots DIMM 5A and DIMM 5D
The server blade uses a minimum of 4 GB of memory (four 1-GB DIMMs), and a maximum of 192
GB of memory (24 8-GB DIMMs). If you purchased additional memory, use these procedures to
install more DIMMs into your server blade.
Load DIMMs from highest capacity to lowest capacity (for example, load the 8-GB DIMMs first,
then the 4-GB DIMMs, then the 2-GB DIMMs, and so forth).
The memory subsystem supports chip spare functionality. The DIMMs in a quad must be identical
to enable chip sparing. Chip sparing enables an entire SDRAM chip on a DIMM to be bypassed
(logically replaced) if a multibit error is detected on that SDRAM.
To use the chip spare functionality, use only DIMMs built with the same HP part numbers. These
DIMMs must be loaded in quads.

DIMM Configuration

The memory subsystem supports only DDR SDRAM technology using industry-standard DDR2
SDRAM DIMMs, 1.2 inches tall, using a 184-pin JEDEC standard connector. In the server blade,
you must load the DIMMs in quads. To enable chip sparing, you must load four DIMMs of the
same capacity and configuration.
Table 27 Server Blade Memory Array Capacities
Min / Max Memory Size
4 GB / 24 GB
8 GB / 48 GB
16 GB / 96 GB
32 GB / 192 GB
Loading DIMMs as quads (four identical DIMMs) enables lock-step mode and chip sparing.

Replacing a DIMM

Use the following procedure to replace a DIMM.
1. Ensure the DIMM slot latches are open.
CAUTION:
affect data integrity.
2. Insert the DIMM into the slot and push down until the latches click shut.
3. Replace the DIMM air baffle (if necessary).
4. Replace the access panel.
See the "Replacing the Right Access Panel" (page
5. Place the server blade into the enclosure.
See "Replacing the Server Blade in the Enclosure" (page

Removing and Replacing the Memory Mezzanine Board

Use the following procedures to remove and replace the 24 slot memory mezzanine board located
under the left access panel on the server blade.
122 Removing and Replacing Components
Table 27
Single DIMM Sizes
1 GB
2 GB
4 GB
8 GB
Use only HP low-profile (1.2 in.) DIMMs. DIMMs from other sources may adversely
summarizes the server blade memory configurations.
117).
115).