Uncorrectable Memory Error & Patrol Scrub

[EDura2]

I am looking for articles/papers/documentation that relates to Uncorrectable Memory Errors on Xeon based server platforms. Specific interest area is Patrol Scrub.

Can enabling Patrol Scub lead to reporting of Uncorrectable Errors that would not otherwise occur if Patrol Scrub is disabled? What are the risks associated with disabling Patrol Scrub?

[idata]

Hello edurai,

I will do some research and send you any documentation I find related to the topic as soon as possible. Thank you. Best regards, Franklin S.Intel Technical Support.

[idata · Accepted solution]

Hello edurai,

Memory Demand and Patrol Scrubbing: Demand scrubbing is the ability to write corrected data back to the memory once a correctable error is detected on a read transaction. Patrol scrubbing proactively searches the system memory, repairing correctable errors. It prevents accumulation of single-bit errors. Thus, there are risks at disabling it. You could get more information at https://software.intel.com/sites/default/files/managed/b3/d1/MCA_Recovery_Validation_Guide.pdf https://software.intel.com/sites/default/files/managed/b3/d1/MCA_Recovery_Validation_Guide.pdf Please post your question to the ‎https://software.intel.com/en-us/forum Intel®Developer Zone Forums. Additional valuable information is available at https://software.intel.com/en-us/articles/intel-xeon-processor-e7-880048002800-v2-product-family-based-platform-reliability https://software.intel.com/en-us/articles/intel-xeon-processor-e7-880048002800-v2-product-family-based-platform-reliability If you have any more questions, please let me know. Best regards,Caesar B_Intel

[axiqia]

Hi, idata,

The link you provided is out of date and can not be opened, could you please update it?  

https://software.intel.com/sites/default/files/managed/b3/d1/MCA_Recovery_Validation_Guide.pdf https://software.intel.com/sites/default/files/managed/b3/d1/MCA_Recovery_Validation_Guide.pdf

Thank you.

Best Regards,

Shuai