怎么检查服务器主板BIOS支持的最大内存大小？

Posted 2020-06-13 msdnchina

怎么检查服务器主板Bios支持的最大内存大小？
来源于：
How to check Maximum Supported Memory by Motherboard Bios (文档 ID 1680534.1)

适用于：
Linux OS - Version Oracle Linux 5.0 to Oracle Linux 6.5 [Release OL5 to Ol6U5]
Linux x86-64
Linux x86

目标：
获得服务器主板BIOS支持的最大内存大小

解决方案：
简单的dmidecode 查询会得到这个值

# dmidecode -t 16

SMBIOS 2.7 present.

Handle 0x0041, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 32 GB
Error Information Handle: Not Provided
Number Of Devices: 4

因此，上面例子中，服务器主板的BIOS可以最多容纳32GB内存

如果有超过32GB的内存被安装在了主板上，操作系统还是会发现最大32GB内存。

 

译者注：我的虚拟机的查询结果如下：

[[email protected] ~]# dmidecode -t 16
# dmidecode 2.11
SMBIOS 2.4 present.

Handle 0x00E2, DMI type 16, 15 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 1 TB
	Error Information Handle: Not Provided
	Number Of Devices: 64

[[email protected] ~]# uname -r
2.6.32-279.el6.x86_64
[[email protected] ~]# uname -a
Linux rhel63single 2.6.32-279.el6.x86_64 #1 SMP Wed Jun 13 18:24:36 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
[[email protected] ~]#