Brand: Western Digital | Category: Enterprise HDDs
SKU: WD121KRYZ | Part #: WD121KRYZ | MPN: WD121KRYZ
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Built for 24×7 nearline and sustained sequential workloads, the WD Gold 12TB 3.5-inch Enterprise Hard Drive delivers an MTBF rating of 2,500,000 hours—engineered for mission-critical storage environments where reliability is non-negotiable. Manufactured by Western Digital, the WD121KRYZ combines enterprise-grade build quality with balanced performance to support data centers, server farms, and high-capacity storage arrays operating around the clock.
The 12TB capacity, SATA 6Gb/s interface, and 7200 RPM spindle speed enable sustained data transfer rates up to 255MB/s, while the 256MB cache buffer optimizes sequential I/O patterns common in archive and surveillance deployments. Western Digital's CMR technology provides proven reliability at scale, backed by Time-Limited Error Recovery (TLER) and Rotational Vibration Safeguard (RVS) to minimize downtime during multi-drive configurations. End-to-end data path protection and a sealed, helium-filled platform extend operational longevity while reducing thermal stress. With a workload rate of up to 550TB/year and low idle power consumption of 4.6W, this drive balances performance with operational efficiency—ideal for storage architects and IT procurement teams deploying large-scale NAS, SAN, and archival infrastructure.
| Brand | Western Digital |
| Category | Enterprise HDDs |
| SKU | WD121KRYZ |
| Part Number | WD121KRYZ |
| Condition | New |
| Model | WD Gold 12TB Enterprise Hard Drive |
| Manufacturer Part Number | WD121KRYZ |
| Form Factor | 3.5-inch |
| Capacity | 12TB |
| Interface | SATA 6Gb/s |
| Rotational Speed | 7200 RPM |
| Recording Technology | CMR (Conventional Magnetic Recording) |
| Cache Buffer | 256MB |
| Workload Rate | Up to 550TB/year |
| MTBF | 2,500,000 hours |
| Data Transfer Rate (sustained) | Up to 255MB/s |
| Error Recovery | Time-Limited Error Recovery (TLER) |
| Vibration Compensation | Rotational Vibration Safeguard (RVS) |
| Data Integrity | End-to-end data path protection |
| Sealed Platform | Helium-filled |
| Power (Active Read/Write) | 7.1W (typical) |
| Power (Idle) | 4.6W (typical) |
| Operating Temperature | 0°C to 60°C |
| Dimensions (H x W x D) | 26.1mm x 101.6mm x 147mm |
| Weight | 720g (approx.) |
| RoHS Compliant | Yes |
Enterprise mixed-use and ri workloads — including transactional databases, AI inference data, virtualisation, hyperconverged storage, and analytics. Endurance is rated for continuous operation, not consumer-style burst use.
Use the RFQ form on this page with your quantity and destination. For larger and project-scale orders we engage the vendor directly to prepare a tailored quote, and our pre-sales team follows up with a vendor-confirmed quote.
