HP Advanced Memory Error Detection Technology

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Figure 3A: Example of IML event log with Correctable Memory Error alerts
Figure 3B: Example of IML event log with an Uncorrectable Memory Error alert
Advantages
The HP Advanced Memory Error Detection Technology algorithm is better at pinpointing critical
memory errors that can shut down a server. It reduces server downtime by alerting server
administrators only when the server is truly at a higher risk of receiving a non-recoverable
uncorrectable memory error. Server administrators can then better plan downtime to replace
degraded DIMMs, avoiding the unplanned downtime associated with a non-recoverable memory
error.
HP ProLiant servers supported
HP Advanced Memory Error Detection Technology is introduced in the System ROM upgrade (May
2011 or later) for certain Intel Xeon-based ProLiant G6 and G7 platforms and for certain AMD
Opteron-based ProLiant G7 platforms. For a list of specific servers, go to the ”For more information”
section. The technology will be implemented in future generations of ProLiant servers.
Conclusion
Since 1999, the HP Pre-Failure Alert notification system has alerted customers of potential failure in
DDR3 DIMMs that exceed a predefined threshold for correctable memory errors. This allowed
administrators to schedule server maintenance to replace a DIMM and avoid unexpected interruption
of business operations.
But over the past few years, the number of reported memory errors has increased due to the growth in
server memory capacity and the increase in DRAM chip density. These reported memory errors
include particular errors that do not significantly increase the probability of a non-recoverable memory