Self monitoring and self repairing ecc

A method for monitoring a first Error Correcting Code (ECC) module for failure and for monitoring a second ECC module for failure and replacing the first ECC module with the second ECC module if the first ECC module fails, the method comprising the steps of:

• performing a first loopback test on the first ECC module if a specified number of correctable errors is exceeded or if an uncorrectable error is detected in the first ECC module;
• performing a second loopback test on the second ECC module if the specified number of correctable errors is exceeded or if an uncorrectable error is detected in the second ECC module;
• and
• replacing the first ECC module that fails the first loopback test with the second ECC module that passes the second loopback test.

A computer program product for monitoring a first Error Correcting Code (ECC) module for failure and for monitoring a second ECC module for failure and replacing the first ECC module with the second ECC module if the first ECC module fails, the computer program product comprising:

• one or more processors, one or more computer-readable memories, one or more computer-readable tangible storage devices, and program instructions stored on at least one of the one or more storage devices for execution by at least one of the one or more processors via at least one of the one or more memories, the program instructions comprising:
• program instructions to perform a first loopback test on a first ECC module if a specified number of correctable errors is exceeded or if an uncorrectable error is detected in a first ECC module;
• program instructions to perform a second loopback test on the second ECC module if the specified number of correctable errors is exceeded or if an uncorrectable error is detected in the second ECC module;
• and
• program instructions to replace the first ECC module that fails the first loopback test with the second ECC module that passes the second loopback test.