Specifications

5. Slots DIMM 4A and DIMM 4B
6. Slots DIMM 5A and DIMM 5B
The server blade uses a minimum of 1 GB of memory (two 512-MB DIMMs), and a maximum of
96 GB of memory (twelve 8-GB DIMMs). If you purchased additional memory, use these procedures
to install more memory 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 pair 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 pairs.
DIMM Configuration
The memory subsystem supports only DDR SDRAM technology using industry-standard PC2-4200
type DDR SDRAM DIMMs, 1.2 inches tall, using a 184-pin JEDEC standard connector. In the server
blade, you must load the DIMMs in pairs. To enable chip sparing, you must use two DIMMs of the
same capacity and configuration. Table 28 summarizes the server blade memory configurations.
Table 28 Server Blade Memory Array Capacities
Single DIMM SizesMin / Max Memory Size
512 MB1 GB / 2 GB
1 GB2 GB / 4 GB
2 GB4 GB / 8 GB
4 GB8 GB / 48 GB
Loading DIMMs as pairs (two identical DIMMs) enables lock-step mode and chip sparing.
Replacing a DIMM
To replace a DIMM:
1. Ensure the DIMM slot latches are open.
CAUTION: Use only HP low-profile (1.2 in.) DIMMs. DIMMs from other sources may adversely
affect data integrity.
2. Insert the DIMM into the slot and push down until the latches click shut.
3. Replace the access panel.
For details, see the “Replacing the Server Blade Access Panel” (page 112).
4. Place the server blade into the enclosure.
See “Replacing the Server Blade in the Enclosure” (page 111).
Removing and Replacing a Processor
The following procedures describe how to remove and replace a processor in the server blade.
Install the processors into the server blade in the following order:
• Processor slot 0
• Processor slot 1
For the processor slot locations, see Figure 41 (page 116).
Removing and Replacing a Processor 115