What do SMART error logs provide information about?

SMART error logs specifically focus on providing insights into the health and performance of storage devices, particularly hard drives and SSDs. SMART stands for Self-Monitoring, Analysis, and Reporting Technology, which is a monitoring system included in computer hard disk drives and solid-state drives.

These logs track various attributes related to the disk's reliability, such as the number of reallocated sectors, read/write errors, and temperature warnings. When issues arise within these parameters, the SMART error logs can document them, helping to identify disk errors before they lead to a complete failure.

The other options relate to different aspects of system and performance monitoring but do not pertain specifically to the functionality of SMART error logs. Past performance metrics usually deal with analysis over time, disk fragmentation concerns the efficiency of data storage on a disk, and system boot status typically indicates whether a system has booted up successfully or not. None of these options specifically capture the essence of what SMART error logs are designed to monitor, making the focus on disk errors the most accurate answer.