por que dmidecode disse que a capacidade máxima de memória do meu servidor é 16G. na verdade slots são consistem de 8G + 2G + 2G + 2G de memória

Question

em resumo: servidor agora tem memória 14G , que consiste em 4 slots (2G + 2G + 2G + 8G ) já que tem uma memória máxima em um slot são 8G , porque a capacidade máxima é de 16G, em vez de 8 * 4 = 32G

aqui estão os detalhes:

klg @ gentoo: ~ $ free -m

             total       used       free     shared    buffers     cached
Mem:         14022      12270       1751          0         45       7189

klg @ gentoo: ~ $ sudo dmidecode -t 17     [sudo] senha para klg:

# dmidecode 2.11
SMBIOS 2.6 present.

Handle 0x1100, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: 1
    Locator: DIMM_A1 
    Bank Locator: Not Specified
    Type: DDR3
    Type Detail: Synchronous Unbuffered (Unregistered)
    Speed: 1333 MHz
    Manufacturer: 019800000000
    Serial Number: 5D3BFD38
    Asset Tag: 04105200
    Part Number: 9965413-011.A00LF 
    Rank: 2

Handle 0x1101, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 8192 MB
    Form Factor: DIMM
    Set: 1
    Locator: DIMM_A2 
    Bank Locator: Not Specified
    Type: DDR3
    Type Detail: Synchronous Unbuffered (Unregistered)
    Speed: 1600 MHz
    Manufacturer: 019800000000
    Serial Number: F72AA08D
    Asset Tag: 04144700
    Part Number: 9965525-116.A00LF 
    Rank: 2

Handle 0x1102, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: 2
    Locator: DIMM_A3 
    Bank Locator: Not Specified
    Type: DDR3
    Type Detail: Synchronous Unbuffered (Unregistered)
    Speed: 1333 MHz
    Manufacturer: 019800000000
    Serial Number: 5E3B4C08
    Asset Tag: 04105200
    Part Number: 9965413-011.A00LF 
    Rank: 2

Handle 0x1103, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: 2
    Locator: DIMM_A4 
    Bank Locator: Not Specified
    Type: DDR3
    Type Detail: Synchronous Unbuffered (Unregistered)
    Speed: 1333 MHz
    Manufacturer: 019800000000
    Serial Number: 6D3ACDE3
    Asset Tag: 04105200
    Part Number: 9965413-011.A00LF 
    Rank: 2

atualização: usando DELL R210 link depois de ler o guia, descobri:

System Capacity|System Memory Speed|DIMM Speed|DIMM_T ECH|DIMM Capacity |NUM_DI MM|Slot|NUM_Rank|Data Width
8GB 1333 1333 UDIMM 4 2 1,2 2 X8
16GB 1066 1066 UDIMM 4 4 1,2,3,4 2 X8

** parece max deve ser 16Gx4 = 32G, a 1066MHZ **

klg @ gentoo: ~ $ sudo dmidecode -t 16 [sudo] senha para klg:     #dmidecode 2.11     SMBIOS 2.6 presente.

Handle 0x1000, DMI type 16, 15 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: Multi-bit ECC
    Maximum Capacity: 16 GB
    Error Information Handle: Not Provided
    Number Of Devices: 4

Capacidade máxima: 16 GB , parece estranho. OS, usando o Ubuntu 12.04.