This means that the product has been opened, may show slight signs of use and cosmetic blemish, and may be missing minor accessories, but remain in excellent condition. Product does not come with warranty unless stated otherwise in product description.
Erased (DoD 5220.22 M Compliant) and tested. There may be drives that have up to 25 bad sectors. There may be writing or markings on the drive or the label may vary slightly from picture.
Pick the drive that suits your needs with the confidence in knowing that all WD Caviar Blue drives are built to the highest standards of quality and reliability.
High PerformanceCombining SATA 3Gbps interface, high speed cache and large capacity, the WD Caviar Blue internal hard drives provides solid performance to meet the most demanding environments and applications.
Advanced Format Technology (AFT)Adopted by WD and other drive manufacturers as one of multiple ways to continue growing hard drive capacities, the Advanced Format Technology (AFT) is a more efficient media format that enables increased areal densities. (AALX models only).
WD Data Lifeguard TechnologyExclusive Data Lifeguard data protection features include shock protection, an environmental protection system and real-time embedded error detection and repair. WD's Data Lifeguard technology automatically finds, isolates and repairs problems that may develop over the life of a hard drive.
WD ShockGuard TechnologyShockGuard technology instantaneously protects the hard drive against damage from bumps and vibrations during operation. This technology enables WD Caviar drives to achieve industry-leading shock specifications.
Learn more about the Western Digital WD2500AAKS
NAND Flash Memory Type
Average Seek Time
Average Write Time
Top performance for Windows Vista IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration. SecurePark - Parks the recording heads off the disk surface during spin up, spin down and when the drive is off. This ensures the recording head never touches the disk surface resulting in improved long term reliability due to less head wear, and improved non- operational shock tolerance.