Western Digital Caviar RE 400GB 3.5-inch SATA hard drive (part no. WD4000YS-01MPB1) designed for enterprise and NAS environments. Features 7200 RPM spindle speed, 3 Gb/s SATA interface, and 16MB cache buffer for sustained sequential and random I/O performance. The RE series is built for 24/7 operation in multi-bay storage arrays and server configurations requiring reliability over extended duty cycles. Typical applications include RAID arrays, backup storage, and nearline archival within legacy enterprise systems. Compatible with standard 3.5-inch drive bays and SATA-capable storage controllers. Tested and guaranteed; available via quote.
