DIMM 上面有 SPD(Serial presence detect) 可以儲存 DIMM 的相關訊息,那其他 Hardware 有嗎??
有的 VPD (vital product data) 跟 SMBIOS (System Management BIOS, SMBIOS)/ DMI(Desktop Management Interface) 都是存儲系統硬體或是 BIOS 資訊,但兩者的不同點.在 Linux 下,透過 man vpddecode 或是 man dmidecode 都可以查出,它們儲存的資料稍為不一樣
# sudo man vpddecode DESCRIPTION vpddecode prints the "vital product data" information that can be found in almost all IBM and Lenovo computers. Available items are: ? BIOS Build ID ? Box Serial Number ? Motherboard Serial Number ? Machine Type/Model Some systems have these additional items: ? BIOS Release Date ? Default Flash Image File Name Note that these additional items are not documented by IBM, so this is guess work, and as such should not be blindly trusted. Feedback about the accuracy of these labels is welcome.
感覺 VPD 主要是儲存製造系統廠商的硬體資訊.而 SMBIOS 主要是所有零件的資訊.
# sudo man dmidecode DESCRIPTION dmidecode is a tool for dumping a computer's DMI (some say SMBIOS) table contents in a human-readable format. This table contains a description of the system's hardware components, as well as other useful pieces of infor- mation such as serial numbers and BIOS revision. Thanks to this table, you can retrieve this information without having to probe for the actual hard- ware. While this is a good point in terms of report speed and safeness, this also makes the presented information possibly unreliable. The DMI table doesn't only describe what the system is currently made of, it also can report the possible evolutions (such as the fastest supported CPU or the maximal amount of memory supported). SMBIOS stands for System Management BIOS, while DMI stands for Desktop Man- agement Interface. Both standards are tightly related and developed by the DMTF (Desktop Management Task Force).
Keyword Types ------------------------------ bios 0, 13 system 1, 12, 15, 23, 32 baseboard 2, 10, 41 chassis 3 processor 4 memory 5, 6, 16, 17 cache 7 connector 8 slot 9
要看個別資訊可以是 -t 指定
#sudo dmidecode -t 17
類似 VPD 功能還有 FRU 所存取的資料.
FRU (Field Replacable Unit)EEPROM 位於 BMC 架構下的一塊 EEPROM (請參考下圖) ,主要儲存了 Memory (DIMM),Power Supply, 插入式的板卡等製照商,序號,出廠日 資料.