Sun Microsystems Sun Fire X4100, Примечания к продукту

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24 Sun Fire X4100 and Sun Fire X4200 Servers Product Notes • November 2006
Upgrading BIOS Without Changing and Saving
Optimal Defaults Might Result in Increased
Memory Latency (6306622, 6299794)
You might notice an increased memory latency if you upgrade the BIOS image and
do not also change the optimal defaults and save the setup. This issue is not specific
to an operating system.
Workaround
This issue is fixed in the BIOS that is part of Release 1.0.1.
If you have a server without the Release 1.0.1 upgrade, do the following after
upgrading the BIOS using the BIOS Setup utility:
1. Use the arrow keys to choose Load Optimal Defaults on the Exit menu.
2. Press Enter to go to the next screen.
3. Press Enter when prompted to load the optimal defaults.
4. Choose Save Changes and Exit, and then press Enter.
5. Press Enter when prompted to save the configuration changes and exit the utility.
Resetting System Might Create Invalid CMOS
Checksum (6297018)
Each time the system is booted, the BIOS recomputes CMOS data within the
checksum area and checks the data against the stored value. If the two values do not
match, an error message is generated to tell you that the CMOS memory contents
might have been corrupted.
Analysis
There is a time gap between when the system writes the CMOS data and when it
writes the checksum. If the system is reset during this gap, an invalid CMOS
checksum may be created.