Memory Mirror; Table 3.16 Memory Mirror Mode; Table 3.17 Memory Mirror And Supported Model - Fujitsu PRIMEQUEST 2000 Series Administration Manual

CHAPTER 3 Component Configuration and Replacement (Add, Remove)
3.2 High availability configuration
Memory Operation Mode
Partial Mirror Mode
Address Range Mirror Mode
Spare Mode
Note
When installation number of DIMM is at minimum and partition configuration and memory operation mode
match conditions below, partition cannot be rebooted after DIMM fails.
- Partition includes only one SB and memory operation mode is set to Normal mode, Full/Partial mirror
mode (*1), Address Range Mirror, or Spare mode.
- In PRIMEQUEST 2400E3/2400E2,
partition includes memory scale-up board and only one SB is included in the partition,
and memory operation mode is set to Normal mode, Full/Partial mirror mode (*1), Address Range Mirror,
or Spare mode,
and DIMMs in the SB fails.
(*1) Only case where Mirror RAS mode is Mirror Keep.

3.2.6 Memory Mirror

In the PRIMEQUEST 2000 series, the Mirror Mode, the Partial Mirror Mode and Address Range Mirror Mode
are supported as the memory mirror, in which the function with the CPU is used. Full Mirror/Partial
Mirror/Address Range Mirror can be selected from the MMB Web-UI.
Mirror type
Full Mirror
Partial Mirror (*1)
Address Range Mirror
*1: The operation of both Full Mirroring and Partial Mirroring is the same, when the partition is configured by
one SB.
Note
When configuring the partition with one SB, the Memory Mirror may be deleted before and after the Reserved
SB, depending on the SB DIMM configuration of the Reserved SB. For details, Reserved SB setting rules of
3.2.4 Reserved SB.
Memory Mirror and supported model
Each of memory mirror mode and supported model is shown in the table below.
Mirror type
Description
For details on the Memory Mirror RAS, see Memory Mirror RAS of
Memory Mirror
The Memory Mirror mode is used only in the Home SB.
In this mode, mirror maintenance mode or capacity maintenance mode is
selected as the Memory Mirror RAS mode.
For details on the Memory Mirror, see
For details on the Memory Mirror RAS, see Memory Mirror RAS of
Memory Mirror
Memory mounted in the partition is partially mirrored.
For details on Address Range Mirror, see
Mode in which the Memory Spare is used.
Note
- The Memory Spare cannot be used if the Memory Mirror has been set.
- In memory spare mode, the memory size recognized by the operating
system decreases by from about two-thirds to five-sixth of memory size
mounted physically in the partition.

TABLE 3.16 Memory Mirror Mode

Description
Memory Mirroring is executed to memories on all SBs and Memory Scale-up
Boards included in a partition.
Memory Mirroring is executed to memories on only Home SB included in a
partition. Memory Mirroring is not executed for an SB which is not the Home
SB.
Memory Mirroring is partially executed to memories included in a partition.
Memory size to be mirrored is specified by BIOS or OS.

TABLE 3.17 Memory Mirror and supported model

2400E3/2800E3/2800B3
66
3.2.6 Memory Mirror
3.2.6 Memory Mirror.
PRIMEQUEST
2400E2/2800E2/2800B2/
2400E/2800E/2800B
3.2.6
3.2.6
CA92344-0537-08