NEC 5800/230Eh Installation Order and Notes, Installation Pattern in Memory Controller, DIMM Installation Pattern for Using Online Spare Memory Feature

9-34 Upgrading Your Server

Installation Order and Notes

The following table shows the installation order.

Condition	DIMM numbers
Minimum installation	DIMM #A-1 and DIMM #B-1
When added one pair	DIMM #A-2 and DIMM #B-2
When added two pairs	DIMM #A-3 and DIMM #B-3

DIMM Installation Pattern for Using Online Spare Memory Feature

To enable online spare memory feature, DIMMs in memory controller must be the same capacities and type. Depending on specification of memory controller, the spare memory is set in unit of rank memory.

The logical memory capacity of single rank memory differs from that of dual rank memory when online spare memory is specified.

„Single rank memory configuration

(Physical memory capacity * Number of DIMMs) – Physical memory capacity

=Logical memory capacity

„Dual rank memory configuration

(Physical memory capacity * Number of DIMMs) – (Physical memory capacity / 2)

=Logical memory capacity

The server supports the following DIMMs

„N8102-250 Additional 1-GB memory: Single rank

„N8102-251 Additional 2-GB memory: Dual rank

„N8102-252 Additional 4-GB memory: Dual rank

The use the online spare memory feature, install DIMMs according to the table shown below. (To enable the online spare memory, BIOS setting is required (see Chapter 4).)

Installation Pattern in Memory Controller 0

	Group #1	Group #2	Group #3	Total capacity of	Total capacity of
	DIMM #A1, #B1	DIMM #A1, #B1	DIMM #A1, #B1	physical memory	logical memory
Pattern 1	Standard 1GB	Additional 1GB		2GB	1GB
Pattern 2	Standard 1GB	Additional 1GB	Additional 1GB	3GB	2GB
Pattern 3	Additional 2GB	Additional 2GB		4GB	3GB
Pattern 4	Additional 2GB	Additional 2GB	Additional 2GB	6GB	5GB
Pattern 5	Additional 4GB	Additional 4GB		8GB	6GB
Pattern 6	Additional 4GB	Additional 4GB	Additional 4GB	12GB	10GB