HP ProLiant DL288 HP Advanced Memory Error Detection Technology - Page 6

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 6