Cisco Systems 57712, UCSCPCIEBTG manual 259

BIOS Parameters by Server Model

Advanced BIOS Parameters for C460 Servers

Name	Description
Sparing Mode	The sparing mode used by the CIMC. This can be one of the
	following:
	• —The spared memory is allocated at the rank level.
	• DIMM Sparing—The spared memory is allocated at the
		DIMM level.
	Note	This option is used only if is set to
		Sparing.
Mirroring Mode	Mirroring is supported across Integrated Memory Controllers
	(IMCs) where one memory riser is mirrored with another. This
	can be one of the following:
	• Intersocket—Each IMC is mirrored across two sockets.
	• Intrasocket—One IMC is mirrored with another IMC in
		the same socket.
	Note	This option is used only if is set to
		Mirroring.
Patrol Scrub	Whether the system actively searches for, and corrects, single
	bit memory errors even in unused portions of the memory on
	the server. This can be one of the following:
	• Disabled—The system checks for memory ECC errors
		only when the CPU reads or writes a memory address.
	• Enabled—The system periodically reads and writes
		memory searching for ECC errors. If any errors are found,
		the system attempts to fix them. This option may correct
		single bit errors before they become multi-bit errors, but
		it may adversely affect performance when the patrol scrub
		is running.
Patrol Scrub Interval	Controls the time interval between each patrol scrub memory
	access. A lower interval scrubs the memory more often but
	requires more memory bandwidth.
	Select a value between 5 and 23. The default value is 8.
	Note	This option is used only if Patrol Scrub is
		enabled.

Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5

OL-28893-01 259