Cara Pasang Ram Server Lenovo SR650 Mirroring mode

Mirroring mode

In mirroring mode, each memory module in a pair must be identical in size and architecture. The channels are grouped in pairs with each channel receiving the same data. One channel is used as a backup of the other, which provides redundancy.

Note: All memory modules to be installed must be the same type with the same capacity, frequency, voltage, and ranks.

The following table shows the memory module population sequence for mirroring mode when only one processor (Processor 1) is installed.

Table 1. Mirroring mode with one processor

Total	Processor 1													Total
DIMMs	12	11	10	9	8	7		6	5	4	3	2	1	DIMMs
2									5		3			2
3									5		3		1	3
4			10		8				5		3			4
6	12		10		8				5		3		1	6
8			10	9	8	7		6	5	4	3			8
9	12		10		8			6	5	4	3	2	1	9
12	12	11	10	9	8	7		6	5	4	3	2	1	12

The following table shows the memory module population sequence for mirroring mode when two processors (Processor 1 and Processor 2) are installed.

Table 2. Mirroring mode with two processors

Total	Processor 2														Processor 1													Total
DIMMs	24	23	22	21	20	19		18	17	16	15	14	13		12	11	10	9	8	7		6	5	4	3	2	1	DIMMs
4									17		15												5		3			4
5									17		15												5		3		1	5
6									17		15		13										5		3		1	6
7									17		15		13				10		8				5		3			7
8			22		20				17		15						10		8				5		3			8
9									17		15		13		12		10		8				5		3		1	9
10			22		20				17		15				12		10		8				5		3		1	10
12	24		22		20				17		15		13		12		10		8				5		3		1	12
13			22		20				17		15				12		10		8			6	5	4	3	2	1	13
14			22	21	20	19		18	17	16	15				12		10		8				5		3		1	14
15	24		22		20				17		15		13		12		10		8			6	5	4	3	2	1	15
16			22	21	20	19		18	17	16	15						10	9	8	7		6	5	4	3			16
17			22	21	20	19		18	17	16	15				12		10		8			6	5	4	3	2	1	17
18	24		22		20			18	17	16	15	14	13		12		10		8			6	5	4	3	2	1	18
20			22	21	20	19		18	17	16	15				12	11	10	9	8	7		6	5	4	3	2	1	20
21	24		22		20			18	17	16	15	14	13		12	11	10	9	8	7		6	5	4	3	2	1	21
24	24	23	22	21	20	19		18	17	16	15	14	13		12	11	10	9	8	7		6	5	4	3	2	1	24

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