This HP Midline (MDL) 500GB 7.2K RPM NHP 3.5 Hard Disk Drive is SMART capable and offers data integrity along with the lowest cost per GB targeted for non-mission critical applications with low workloads of 50% or less. SMART stands for Self Monitoring Analysis and Reporting Technology. First developed at HP it detects possible hard disk failure before it occurs allowing replacement of the component before failure occurs.