今天需要查看服务器内存型号，好购买添加，查询命令如下：

[root@localhost ~]# dmidecode -t memory
# dmidecode 2.9
SMBIOS 2.5 present.

Handle 0x0012, DMI type 16, 15 bytes
Physical Memory Array
        Location: System Board Or Motherboard
        Use: System Memory
        Error Correction Type: None
        Maximum Capacity: 64 GB 《最大支持的内存数》
        Error Information Handle: Not Provided
        Number Of Devices: 8  《插槽数》

Handle 0x0013, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: 72 bits
        Data Width: 64 bits
        Size: 4096 MB              大小4G
        Form Factor: DIMM
        Set: 1
        Locator: DIMM1A
        Bank Locator: Bank1
        Type: DDR2 FB-DIMM         类型
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)         频率
        Manufacturer: 9801
        Serial Number: 07240578
        Asset Tag: Not Specified
        Part Number: KINGSTON       品牌  

Handle 0x0014, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: 1
        Locator: DIMM1B
        Bank Locator: Bank1
        Type: DDR2 FB-DIMM
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)
        Manufacturer:    
        Serial Number:        
        Asset Tag: Not Specified
        Part Number:                  

Handle 0x0015, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: 1
        Locator: DIMM2A
        Bank Locator: Bank2
        Type: DDR2 FB-DIMM
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)
        Manufacturer:    
        Serial Number:        
        Asset Tag: Not Specified
        Part Number:                  

Handle 0x0016, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: 1
        Locator: DIMM2B
        Bank Locator: Bank2
        Type: DDR2 FB-DIMM
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)
        Manufacturer:    
        Serial Number:        
        Asset Tag: Not Specified
        Part Number:                  

Handle 0x0017, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: 72 bits
        Data Width: 64 bits
        Size: 4096 MB
        Form Factor: DIMM
        Set: 1
        Locator: DIMM3A
        Bank Locator: Bank3
        Type: DDR2 FB-DIMM
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)
        Manufacturer: 9801
        Serial Number: 0419FFFF
        Asset Tag: Not Specified
        Part Number: KINGSTON         

Handle 0x0018, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: 1
        Locator: DIMM3B
        Bank Locator: Bank3
        Type: DDR2 FB-DIMM
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)
        Manufacturer:    
        Serial Number:        
        Asset Tag: Not Specified
        Part Number:                  

Handle 0x0019, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: 1
        Locator: DIMM4A
        Bank Locator: Bank4
        Type: DDR2 FB-DIMM
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)
        Manufacturer:    
        Serial Number:        
        Asset Tag: Not Specified
        Part Number:                  站长教学网 eduyo.com

Handle 0x001A, DMI type 17, 27 bytes
Memory Device
        Array Handle: 0x0012
        Error Information Handle: No Error
        Total Width: Unknown
        Data Width: Unknown
        Size: No Module Installed
        Form Factor: DIMM
        Set: 1
        Locator: DIMM4B
        Bank Locator: Bank4
        Type: DDR2 FB-DIMM
        Type Detail: Synchronous
        Speed: 667 MHz (1.5 ns)
        Manufacturer:    
        Serial Number:        
        Asset Tag: Not Specified
        Part Number:                  
可以看出这台服务器是2个单根4G的内存，最大支持64G，8个插槽，单根支持8G