Artesyn ATCA-7480 Installation and Use (February 2015) - Manual (Page 322)

IPMI Feature Set
ATCA-7480 Installation and Use (6806800T17A) 322
9.15 Local System Event Log (SEL)
The ATCA-7480 IPMC supports a local SEL. The local SEL size is configured to hold 1K entries in
a circular FIFO buffer. Once the circular buffer is full, the next SEL entry will overwrite the oldest
SEL entry in the buffer. All events are automatically logged locally to the local SEL before being
passed to the Shelf's SEL, which includes all events that occur from the local MMC.
To support the local SEL, a software emulated RTC (Real Time Clock) is enabled which upon
startup requests the local time from the shelf manager by sending an IPMI standard command,
Get SEL Time
. Once the initial time is received, the IPMC maintains the time locally and no
further synchronization is performed with the shelf manager.