Improved diagnostics and data protection, as well as hot-swap capabilities with direct docking, help reduce downtime. For even greater reliability, you can create high-performance RAID arrays. Simply connect your drives to either an onboard Ultra-320 SCSI controller with integrated mirroring capabilities or an IBM ServeRAID-5i Controller, available on select xSeries servers. Other features include a 1-inch, slim-line form factor, which helps optimize storage capacity of supported systems and Predictive Failure Analysis (PFA) that can alert you of a problem before it occurs.