Western Digital 300 GB Caviar Series EIDE Hard Drive (WD3000JB) Cool drive operating temperatures help increase long-term drive reliability 7200 RPM, 8 MB cache Data LifeGuard automatically detects, isolates and repairs problem areas that may develop over the extended use of the hard drive WD minimizes WD Caviar noise to levels virtually below the threshold of human hearing Data Lifeguard Tools software makes hard drive installation, management, and diagnostics simple and worry-free