Western Digital Caviar Blue 640GB 3.5-inch hard disk drive (part no. WD6400AAKS-40H2B1) delivers 7200 RPM performance with SATA 3Gb/s interface connectivity and 16MB cache buffer. The 640GB capacity supports moderate-scale storage and archival applications typical of legacy enterprise systems, departmental file servers, and secondary storage arrays. 3.5-inch form factor fits standard drive bays in tower and rackmount enclosures. SATA 3Gb/s throughput suits sequential and mixed workloads where sustained I/O matters more than latency-sensitive random access. Compatible with most systems built 2008–2012 requiring conventional mechanical storage; often paired with legacy RAID controllers and external enclosures.
Tested and guaranteed; available via quote.
