How to know the maximum RAM supported by your server?

The dmidecode command gives you all informations available about your memory.

With the special parameter “-t 16″, you can see the maximum (physical) memory that your server can have:

$ dmidecode -t 16
# dmidecode 2.8
SMBIOS 2.4 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: 32 GB
Error Information Handle: Not Provided
Number Of Devices: 8

Here we can see that your server can handle up to 32Gb

Check empty memory slots

To know which slots are used or not use the “-t 17″ flag.

dmidecode -t 17 | grep Size
        Size: 2048 MB
        Size: 2048 MB
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed

Links

• DMI specification
• SMBIOS specification

This entry was written by CharlyBr, posted on August 4, 2008 at 8:42 am, filed under Uncategorized and tagged dmidecode, memory. Leave a comment or view the discussion at the permalink.