H205535: Possibility of incorrect data being written on Multi-bit error correcting code (ECC) - IBM System Storage

Source

RETAIN tip: H205535
http://www-947.ibm.com/support/entry/portal/docdisplay?brand=5000008&lndocid=MIGR-5090005

Symptom

When one of the listed IBM Storage Subsystem controllers has detected a Multi-bit Error Correcting Code (ECC) memory error, users will see an informational message in the Major Events Log (event 0x2604) and that individual controller will reboot. If that Multi-bit ECC memory error happens on a dirty cache block that does not begin at offset 0x0, the data may be written incorrectly.
Any of the listed IBM Storage Subsystem controllers running any of these controller firmware versions are susceptible to this issue.

7.77.33.00 or older 7.70.45.00 or older any 7.60.xx.xx any 7.50.xx.xx any 7.36.xx.xx 7.35.69.00 or older any 7.30.xx.xx

IOmeter I/O - subsystem measurement and characterization tool for single and clustered systems

DS3950/4000/5000 Recommended Firmware Levels