Sun Microsystems Sun Fire V20z - Manual (Page 32)

2-8 Sun Fire V20z Server User Guide • March 2004
Chipset
Configuration
Caution: Don’t
change the
settings unless
you are sure of
what you are
doing. Setting
items on this
menu to
incorrect values
may cause your
system to
malfunction. Options for advanced chipset features. Options
include:
• ECC: Enable or disable ECC check/correct mode.
This is a global enable function for all blocks
within the CPU core and North Bridge.
Enabled
• DRAM ECC: If all memory in the system supports
ECC (x72), enabling invokes initial scrub DRAM
and enables system requests to DRAM to be
checked and/or corrected. Options include:
Enabled and Disabled.
Enabled
• ECC Scrub Redirection: Enable or disable EDD
Scrubber to correct errors detected in DRAM
during normal CPU requests (foreground
scrubbing).
Enabled
• Chip-Kill: Enabled or disable the ChipKill ECC on
nodes with all x4 ECC capable DIMMS.
Enabled
• DCACHE ECC Scrub CTL: Sets the rate of
background scrubbing for DCACHE lines. Options
include: 5.12 µs, 10.2 µs, 20.5 µs, 41.0 µs, Disabled,
640 nx, 1.28 µs, 2.56 us.
5.12 us
• L2 ECC Scrub CTL: Sets the rate of background
scrubbing for L2 cache lines. Options include: 10.2
us, 20.5 µs, 41.0 µs, 81.9 µs, Disabled, 1.28 µs,
2.56 µs, 5.12 µs.
10.2 us
• DRAM ECC Scrub CTL: Sets the rate of background
scrubbing for DRAM (in addition to normal ECC
scrubbing from system requests). Background
agent works independently of CPU requests and
bus masters, but cannot be enabled without first
enabling DRAM ECC. Options include: 163.8 us,
327.7 µs, 655.4 µs, 1.31 ms, Disabled, 20.5 µs, 41.0
us, 81.9 µs.
163.8 us
• SRAT Table: Enables the ACPI 2.0 Static Resource
Affinity Table for operating systems that support
an SRAT and will disable node interleaving.
Disabled allows for node interleaving. Options
include: Enabled and Disabled.
Enabled
• Node Interleave: If set to Auto, node interleaving
will be enabled if memory sizes match and if SRAT
table is disabled. Options include: Auto and
Disabled.
Disabled
TABLE 2-3 BIOS Advanced Menu (Continued)
Menu Option Description Default