The WD4000YS-01MPB0 is a Western Digital Caviar RE 400GB hard drive designed for enterprise RAID and server environments. It features a 3.5-inch form factor with 7200 RPM spindle speed, SATA 3Gb/s interface, and 16MB cache buffer. The RE (Raid Edition) line is rated for 24/7 operation in multi-drive arrays and delivers consistent performance in NAS and SAN deployments. Typical use cases include server storage expansion, RAID 5/6 configurations, and archival systems requiring reliable sequential throughput. Compatible with most enterprise storage systems and legacy server platforms supporting standard SATA connections.
Tested and guaranteed; available via quote.
