NEC EXP804 User Manual page 80

Chapter 2 Preparations
(2) Memory Sparing Function
By making a rank of DIMM stored in the memory channel under a memory controller of each CPU stand by
as a spare, Memory Sparing Function makes processing continue by making the DIMM standing by perform
the task automatically in case a correctable error occurs in a DIMM under the memory channel in operation.
For the physical memory capacity available from the operating system, refer to the table below.
The
number of
CPU
1
2
Spare Set
Spare Set
The followings are the conditions to use this function.
80
Tips From the operating system, a size smaller than that is really installed is recognized
(it changes depending on the number of DIMM installed and the capacity per one).
The number
8GB 8GB
of memory
(SR) (DR)
8 32GB 48GB
12 48GB 72GB
16 64GB 96GB
24 96GB 144GB
Memory Controller 1
Spare Set Spare Set
Memory Controller 1
Spare Set Spare Set
Express5800/R120h-1M User's Guide
1. Installing Internal Optional Devices
Types of on-board memory
16GB 16GB 32GB
(SR) (DR) (DR)
64GB 96GB 192GB
96GB 144GB 288GB
128GB 192GB 384GB
192GB 288GB 576GB
Memory Controller 2
Spare Set Spare Set
Memory Controller 2
Spare Set Spare Set
64GB 128GB
(QR) (OR)
448GB 768GB
672GB 1152GB
896GB 1536GB
1344GB 2304GB
Spare Set
Spare Set