The SysInfo tool (System Information Retrieve Utility) is a utility available for most S2400 and S2600 systems. It records the hardware SEL Log but additionally lots of other useful diagnostic information.
When trying to debug an issue, it is usually easiest to retrieve the basic SEL log. If this does not reveal the cause of the problem - and you definitely have a hardware problem, for example the system warning does not show a solid green indication - then you may need to use the Sysinfo tool to gather additional information.
Download the SysInfo tool from the motherboard or Server systems download page.
S2600 Family - Tool is available here.
SysInfo Tool Instructions
Intel have made available a guide to help interpret Selviewer and Sysinfo information. The guide is available here, or attached.
This guide allows you to decode the hexadecimal information of events recorded in the Sysinfo log to determine, for example, a problem sensor or reading.