Artesyn ATCA-7360, Installation And Use Manual

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BIOS
ATCA-7360 Installation and Use (6806800J07S)
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4.7.4 Lockstep Channel Mode
The Lockstep configuration requires a minimum of two DIMMs one in Channel 0 and Channel
1. Channel 2 is not used in Lockstep Channel Mode. The ECC DRAM on each DIMM is mapped
to two adjacent symbols, so any failure of the DRAM can be corrected. The correction
capabilities in lockstep mode are:

Correction of any x4 or x8 DRAM device failure.

Detection of 99.986% of all single bit failures that occur in addition to an x8 DRAM failure.
The Memory Controller will detect a series of failures on a specific DRAM and use this
information in addition to the information provided by the code to achieve 100% detection
of these cases.

Detection of all permutations of 2 x4 DRAM failures.
4.8 Restoring BIOS Default Settings
The blade provides an on-board configuration switch that allows to load BIOS settings from the
DEFAULT area of the IPMI Boot Parameters. In order to restore the BIOS default settings using
this switch, you have to proceed as follows.
Procedure
To restore the BIOS default settings, proceed as follows:
1. Remove the blade from the system.
See Installing and Removing the Blade on page 60 for procedure.
2. Set the on-board switch SW4-3 OFF and SW4-4 ON.
See Switch Settings on page 53 for location of SW4.
3. Install and power up the blade.
See Installing and Removing the Blade on page 60 for procedure.
4. Wait until the blade has completely booted and is up and running.
5. Remove the blade from the system again.
See Installing and Removing the Blade on page 60 for procedure.