Acer Network Device Altos R520 User's Manual | Page 80

Acer Network Card User's Manual - Network Device Altos R520.
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 3 System upgrade

70

Sparing configuration

Memory configuration overview

The system supports the following memory configuration that allow 
flexibility in performance, redundancy, and ability to upgrade. 

Standard configuration

Memory mirroring

Memory sparing

Memory mirroring and memory sparing features are mutually 
exclusive, only one of these memory modes can be enabled at one time 
and not both at the same time. 

Branch 0

Branch 1

Total Memory

Channel A

Channel B

Channel C

Channel D

Physical 
Memory

Detected 
by OS

DIMM 
A1

DIMM 
A2

DIMM 
B1

DIMM 
B2

DIMM 
C1

DIMM 
C2

DIMM 
D1

DIMM 
D2

512 MB 
(Sparing)

512 MB

1 GB

512 MB

512 MB 
(Sparing)

512 MB

512 MB
(Sparing)

512 MB

2 GB

1 GB

512 MB 
(Sparing)

512 MB

512 MB
(Sparing)

512 MB

512 MB 
(Sparing)

512 MB

512 MB
(Sparing)

512 MB

4 GB

2 GB

1 GB  
(Sparing)

1 GB  

2 GB

1 GB

1 GB  
(Sparing)

1 GB

1 GB  
(Sparing)

1 GB 

4 GB

2 GB

1 GB  
(Sparing)

1 GB

1 GB  
(Sparing)

1 GB 

1 GB  
(Sparing)

1 GB

1 GB  
(Sparing)

1 GB 

8 GB

4 GB

2 GB  
(Sparing)

2 GB

4 GB

2 GB

2 GB  
(Sparing)

2 GB

2 GB  
(Sparing)

2 GB

8 GB

4 GB

2 GB  
(Sparing)

2 GB

2 GB  
(Sparing)

2 GB

2 GB  
(Sparing)

2 GB

2 GB  
(Sparing)

2 GB

16 GB

8 GB

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