User's Manual

DescriptionName
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
Whether the system corrects single bit memory errors
encountered when the CPU or I/O makes a demand read. This
can be one of the following:
• Disabled— Single bit memory errors are not corrected.
• Enabled— Single bit memory errors are corrected in
memory and the corrected data is set in response to the
demand read.
Demand Scrub
The approximate number of meters above sea level at which the
physical server is installed. This can be one of the following:
• Auto—The CPU determines the physical elevation.
• —The server is approximately 300 meters above sea level.
• —The server is approximately 900 meters above sea level.
• —The server is approximately 1500 meters above sea
level.
• —The server is approximately 3000 meters above sea
level.
Altitude
Cisco UCS C-Series Servers Integrated Management Controller CLI Configuration Guide, Release 1.5
244 OL-28893-01
BIOS Parameters by Server Model
Advanced BIOS Parameters for C420 Servers