DELL R710服务器内存故障排错
dmidecode - DMI table decoder
通过dmidecode可以得知，有点像windows下的资源管理器
man dmidecode 可以得到详细的介绍和使用方法，dmidecode - DMI table decoder，DMI (Desktop Management Interface, DMI)，其他不过多赘述。
可以在linux下获取有关硬件方面的信息输出的信息包括 BIOS、系统、主板、处理器、内存、缓存等，rhel5版本自动安装了这软件
今天查看内存突然发现内存大小少了8G（本来应该是8个8G的）,要是以前我会找DELL工程师来检查时那根坏了，再更换之，DELL工程师一般是重启服务器再BIOS自检时找出那一条坏了。如今用dmidecode 同样可以找出
过程如下：
# free -g
total used free shared buffers cached
Mem: 55 46 8 0 0 29
-/+ buffers/cache: 17 37
Swap: 64 13 51
# dmidecode -t memory
# dmidecode 2.7
SMBIOS 2.6 present.
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: 288 GB
Error Information Handle: Not Provided
Number Of Devices: 18
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: 8192 MB
Form Factor: DIMM
Set: 1
Locator: DIMM_A1
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 1333 MHz (0.8 ns)
Manufacturer: 00AD00B380AD
Serial Number: 2B83110C
Asset Tag: 01102561
Part Number: HMT31GR7BFR4C-H9
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:
Type Detail: Synchronous
Speed: 1333 MHz (0.8 ns)
Manufacturer: 00AD00B380AD
Serial Number: 2B83110C
Asset Tag: 01102561
Part Number: HMT31GR7BFR4C-H9
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: 8192 MB
Form Factor: DIMM
Set: 2
Locator: DIMM_A3
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 1333 MHz (0.8 ns)
Manufacturer: 00AD00B380AD
Serial Number: 2B83110C
Asset Tag: 01102561
Part Number: HMT31GR7BFR4C-H9
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: 8192 MB
Form Factor: DIMM
Set: 2
Locator: DIMM_A4
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 1333 MHz (0.8 ns)
Manufacturer: 00AD00B380AD
Serial Number: 2B83110C
Asset Tag: 01102561
Part Number: HMT31GR7BFR4C-H9
Handle 0x1104, 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: 3
Locator: DIMM_A5
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 1333 MHz (0.8 ns)
Manufacturer: 00AD00B380AD
Serial Number: 2B83110C
Asset Tag: 01102561
Part Number: HMT31GR7BFR4C-H9
Handle 0x1105, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 3
Locator: DIMM_A6
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x1106, 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: 4
Locator: DIMM_A7
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 1333 MHz (0.8 ns)
Manufacturer: 00AD00B380AD
Serial Number: 2B83110C
Asset Tag: 01102561
Part Number: HMT31GR7BFR4C-H9
Handle 0x1107, 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: 4
Locator: DIMM_A8
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: 1333 MHz (0.8 ns)
Manufacturer: 00AD00B380AD
Serial Number: 2B83110C
Asset Tag: 01102561
Part Number: HMT31GR7BFR4C-H9
Handle 0x1108, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 5
Locator: DIMM_A9
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x1109, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 5
Locator: DIMM_B1
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x110A, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 6
Locator: DIMM_B2
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x110B, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 6
Locator: DIMM_B3
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x110C, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 4
Locator: DIMM_B4
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x110D, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 5
Locator: DIMM_B5
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x110E, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 6
Locator: DIMM_B6
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x110F, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 4
Locator: DIMM_B7
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x1110, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 5
Locator: DIMM_B8
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
Handle 0x1111, DMI type 17, 28 bytes.
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 6
Locator: DIMM_B9
Bank Locator: Not Specified
Type:
Type Detail: Synchronous
Speed: Unknown
Manufacturer:
Serial Number:
Asset Tag:
Part Number:
从上面信息可以看到，服务器总共有A1-A9，B1-B9 18个通道，其中A1-A8上插了内存条，据我所知，服务器内存条是三通道，这种插发并不是DELL推荐插法，
这个后续我会提供DELL服务器内存插法图，其中A6上面看不到内存信息，而其他的有 Size: 8192 MB,Speed: 1333 MHz (0.8 ns),所以A6这个插槽上内存体
坏了。
R710内存插法: X-表示安装内存, NA表示不安装内存.
RDIMM Dual Socket Memory Configuration
RDIMM Dual Processor
Memory Mode Total Memory Per Piece
Memory Socket Memory Socket Physical Memory (GB) Available Memory (GB)
A1 A4 A7 A2 A5 A8 A3 A6 A9 B9 B6 B3 B8 B5 B2 B7 B4 B1
Optimizer 2 GB X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X 4 All
X N/A N/A X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X N/A N/A X 8
X N/A N/A X N/A N/A X N/A N/A N/A N/A X N/A N/A X N/A N/A X 12
X X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X X 8
X X N/A X X N/A N/A N/A N/A N/A N/A N/A N/A X X N/A X X 16
X X N/A X X N/A X X N/A N/A X X N/A X X N/A X X 24
X X X X X X N/A N/A N/A N/A N/A N/A X X X X X X 24
X X X X X X X X X X X X X X X X X X 36
4 GB X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X 8 All
X N/A N/A X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X N/A N/A X 16
X N/A N/A X N/A N/A X N/A N/A N/A N/A X N/A N/A X N/A N/A X 24
X X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X X 16
X X N/A X X N/A N/A N/A N/A N/A N/A N/A N/A X X N/A X X 32
X X N/A X X N/A X X N/A N/A X X N/A X X N/A X X 48
X X X X X X N/A N/A N/A N/A N/A N/A X X X X X X 48
X X X X X X X X N/A N/A X X X X X X X X 64
X X X X X X X X X X X X X X X X X X 72
8 GB1 X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X 16 All
X N/A N/A X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X N/A N/A X 32
X N/A N/A X N/A N/A X N/A N/A N/A N/A X N/A N/A X N/A N/A X 48
X X N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A X X 32
X X N/A X X N/A N/A N/A N/A N/A N/A N/A N/A X X N/A X X 64
X X N/A X X N/A X X N/A N/A X X N/A X X N/A X X 96
X X X X X X N/A N/A N/A N/A N/A N/A X X X X X X 96
X X X X X X X X X X X X X X X X X X 144
Advanced ECC2 2 GB Vacant X N/A N/A X N/A N/A N/A N/A X N/A N/A X Vacant 8 All
X X N/A X X N/A N/A X X N/A X X 16
X X X X X X X X X X X X 24
4 GB Vacant X N/A N/A X N/A N/A N/A N/A X N/A N/A X Vacant 16 All
X X N/A X X N/A N/A X X N/A X X 32
X X X X X X X X X X X X 48
8 GB1 Vacant X N/A N/A X N/A N/A N/A N/A X N/A N/A X Vacant 32 All
X X N/A X X N/A N/A X X N/A X X 64
X X X X X X X X X X X X 96
Mirroring 2 GB Vacant X N/A N/A X N/A N/A N/A N/A X N/A N/A X Vacant 8 4
X X N/A X X N/A N/A X X N/A X X 16 8
X X X X X X X X X X X X 24 12
4 GB Vacant X N/A N/A X N/A N/A N/A N/A X N/A N/A X Vacant 16 8
X X N/A X X N/A N/A X X N/A X X 32 16
X X X X X X X X X X X X 48 24
8 GB1 Vacant X N/A N/A X N/A N/A N/A N/A X N/A N/A X Vacant 32 16
X X N/A X X N/A N/A X X N/A X X 64 32
X X X X X X X X X X X X 96 48
1 When available
2 Requires x4- or x8-based memory modules
