0F12455 WD Ultrastar A7K3000 2TB SATA 64 MB 3.5" Server HDD

High-Performance 3.5in Enterprise SATA HDD for 24x7 Data Volumes with the 0F12455

The 0F12455 is an internal 3.5in enterprise HDD engineered for predictable throughput and consistent latency in RAID arrays, NAS/SAN shelves, and JBOD expansion. Built on a 7200 RPM mechanical platform with 64MB cache, the 0F12455 targets general-purpose server volumes where sustained sequential performance and stable behavior under mixed I/O are required across continuous duty cycles.

For storage architects, the 0F12455 aligns with SATA host connectivity in standard backplanes and controllers, enabling scalable drive-count designs without introducing protocol complexity. CMR recording supports dependable write characteristics for parity-based RAID, while 4Kn media with 512e emulation improves sector efficiency and integration flexibility with existing OS and controller stacks. As a 2TB nearline-capacity tier, the 0F12455 is well-suited for backup/restore streams, log and file repositories, and capacity-focused pools that must remain online under 24x7 operation.

Why Choose the 0F12455?

The 0F12455 provides a balanced density-to-performance profile for enterprise bays where power and thermal budgets matter, combining a stable 7200 RPM envelope with enterprise-class duty rating for round-the-clock service. In multi-drive deployments, the 0F12455 supports straightforward scale-out using common SATA infrastructure, helping standardize spares, simplify RAID group planning, and maintain predictable service behavior in shared storage shelves.

WD designs Ultrastar-class platforms around longevity, consistent operation under sustained load, and compatibility with modern data center qualification processes. With the 0F12455, WD emphasizes controlled firmware behavior, conservative mechanical tolerances, and validated integration in enterprise storage environments where uptime and repeatable performance are mandatory.

Key Applications:

• RAID arrays for general-purpose server storage
• NAS and SAN capacity tiers
• JBOD expansion shelves
• Backup and nearline archive repositories

At Happyware - Server Hardware you benefit from non-binding offers tailored to your deployment and controller environment, ensuring the 0F12455 fits your shelf, RAID level, and capacity plan. For large-scale rollouts, bulk order discount options help align procurement with standardized spares and phased expansion.