Reliability, Availability and Serviceability (RAS) Features on Linux Systems - Vandana Salve, Micron

Reliability, Availability and Serviceability (RAS) Features on Linux Systems - Vandana Salve, Micron Reliability, Availability and serviceability (RAS) is a concept used on the servers to measure their robustness. A system built with high levels of RAS is more fault-tolerant, self-correcting when it discovers corrupted data, and quick and easy to repair without disrupting operations. Reliability indicates the probability that the software or system will produce accurate/correct results consistently, according to its specifications. Availability indicates the probability that a system or software will be operational at any given time. Serviceability refers to the ease and speed with which a system can be fixed or maintained without disrupting operations. As the system scales, the higher is the importance of Reliability Availability and Serviceability (RAS) monitoring. This presentation covers the RAS monitoring features available in the Linux kernel. It also describes the Ras-daemon monitoring tool, which uses the special kernel traces generated by the Kernel to monitor fatal and non-fatal hardware errors that are detected by the CPU, by the memory controller and by the PCIe hardware.