HP Integrity rx2660 Server User Service Guide

Memory Pairs
When installing memory, use a minimum of one pair of like-sized DIMMs. You can install additional
DIMMs later. Install DIMMs into the appropriate slots on the system board; each slot has a unique
ID.
Figure 19 Memory Location and DIMM Slot IDs
CAUTION: Failure to observe the following cautions results in system degradation or failure:
• Do not mix DIMM sizes or types within a pair.
• Load DIMM pairs in order of size from largest to smallest. For example, if you have a pair of
4 GB DIMMs and a pair of 1 GB DIMMs, install the pair of 4 GB DIMMs first.
Table 22 Memory Load Order
Memory SlotsPair Number
0A; 0B1
1A; 1B2
2A; 2B3
3A; 3B4
Memory Loading Rules and Guidelines
Use the following rules and guidelines when installing memory:
• Install DIMMs in pairs
• Ensure that DIMMs within a pair are identical
• Install DIMM pairs in order of size from largest to smallest
• Install DIMM pairs in the specified order shown in Table 22
Installing Memory
To install memory:
1. Remove the top cover from the server. See “Removing the Top Cover” (page 46).
2. Remove the airflow guide. See “Removing the Airflow Guide” (page 47).
Installing Additional Components 49