WD Gold
A high‑reliability enterprise SATA HDD designed for 24/7 operation in demanding data center environments. Delivers up to 262MB/s transfer speed with 7200 RPM and CMR technology. Features HelioSeal® technology for high capacity with low power consumption (14TB and above). MTBF up to 2.5 million hours and workload rating of 550TB/year. Ideal for enterprise storage systems, RAID arrays, and mission‑critical commercial applications.
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Key Features
More Flexibility, More Freedom
WD Gold lets you build out your storage your way with a full portfolio of SATA HDDs from 1TB to 26TB(1), engineered for heavy application workloads and designed to handle workloads up to 550TB(3) per year.
Enhanced Reliability
With up to 2.5M hours MTBF(2), WD Gold hard drives deliver enhanced levels of dependability and durability.
Vibration Protection
WD Gold drives have sophisticated monitoring electronics that help correct linear and rotational vibrations in real time using enhanced vibration protection technology for improved performance in high-vibration environments.
Plays Well with Others
Specifically designed for use in enterprise-grade storage systems and data centers, WD Gold HDDs are broadly compatible with major enterprise operating systems.
Scale Your Business
WD Gold drives are available in capacities up to 26TB(1) utilizing the OptiNAND technology's capacity-enabling feature in 20TB, 22TB, 24TB, 26TB.
WD Gold product details
Official product imagery — specifications, design and interfaces at a glance.
Product Information
A high‑reliability enterprise SATA HDD designed for 24/7 operation in demanding data center environments. Delivers up to 262MB/s transfer speed with 7200 RPM and CMR technology. Features HelioSeal® technology for high capacity with low power consumption (14TB and above). MTBF up to 2.5 million hours and workload rating of 550TB/year. Ideal for enterprise storage systems, RAID arrays, and mission‑critical commercial applications.
Use the media gallery, selected capacity and specification matrix to confirm fit before sending a quote or sample request.
Technical Specifications
| Form Factor | 3.5-inch |
|---|---|
| Interface | SATA 6 Gb/s |
| Rotational Speed | 7200 RPM |
| Cache Size | 256MB |
| Sustained Transfer Rate | up to 267MB/s |
| MTBF | 2,000,000 hours |
| Recording Technology | CMR |
| Power (Active / Idle) | 7W/5.8W |
| Operating Temperature | 5 °C to 60 °C |
| Weight | 715gms |
| Warranty | 5-year limited |
User Guide / Documents
Manufacturer datasheets, manuals and compliance files are shared only when the approved file is available for the confirmed RFQ.
Warranty & Support
Warranty, firmware, batch documentation and RMA terms are confirmed in the written quotation or sales contract. ByteExo coordinates after-sales support through the listed manufacturer channel and the customer's confirmed order record.
Procurement FAQ
What SATA HDD series do you offer and what are their differences?
We offer three enterprise SATA HDD series: WD Gold (4TB–24TB, CMR, up to 279 MB/s), Seagate Exos (4TB–24TB, up to 285 MB/s, 2,500,000-hour MTBF on higher capacities), and Toshiba MG (4TB–24TB, CMR, up to 295 MB/s on the MG11). All use 3.5-inch form factor, SATA 6Gb/s interface, and 7200 RPM, making them interchangeable in most server bays.
What is CMR recording technology and why does it matter?
CMR (Conventional Magnetic Recording) writes each track in a fixed, non-overlapping pattern — the most reliable technology for enterprise workloads with random writes, RAID rebuilds, and sustained write operations. All WD Gold and Toshiba MG drives use CMR. We do not supply SMR (Shingled Magnetic Recording) drives for enterprise use, as SMR has well-documented limitations in RAID and write-intensive environments.
What is the maximum capacity available?
All three series offer up to 24TB per drive: Toshiba MG11 (24TB), Seagate Exos X (24TB+), WD Gold (24TB). For higher density with dual-port redundancy, we recommend NL-SAS HDDs.
What is the sustained transfer rate?
Transfer rates range from 243 MB/s (Toshiba MG08 4TB) to 295 MB/s (Toshiba MG11 24TB). WD Gold reaches up to 279 MB/s; Seagate Exos up to 285 MB/s. Higher-capacity drives generally achieve higher sustained throughput due to increased areal density.
Can these drives be used in RAID arrays?
Yes. All three series are designed and validated for enterprise RAID environments (RAID 0/1/5/6/10/50/60). CMR recording ensures predictable write behavior essential for RAID rebuild integrity. Cache sizes of 256MB–512MB per drive help sustain RAID performance under mixed workloads.
What is the MTBF and warranty?
WD Gold and Toshiba MG: 2,000,000–2,500,000 hours MTBF, 5-year warranty. Seagate Exos: 2,000,000–2,500,000 hours MTBF depending on capacity, 5-year warranty. All are rated for 24/7 continuous operation.
What is the power consumption?
Active power ranges from approximately 6.5W (WD Gold 16TB) to 11.8W (Seagate Exos 10TB). Idle power ranges from 3.3W to 8.3W. For high-density storage arrays with many drives, per-drive power budgeting is important.
Are these drives suitable for NAS or only for servers?
These are enterprise-class data center drives rated for 24/7 operation, not prosumer NAS drives. They exceed the workload ratings of consumer or NAS-grade drives (WD Red, Seagate IronWolf) and are the correct choice for corporate storage servers, SAN/NAS with enterprise controllers, and backup appliances requiring maximum reliability.
What sector formats are supported?
WD Gold: 512e / 4Kn (varies by model). Seagate Exos: 512e and 4Kn. Toshiba MG: primarily 512e. Please confirm your storage controller's sector format compatibility before ordering, particularly for 4Kn configurations.
What is the typical use case for these SATA HDDs?
Bulk capacity storage in data centers: cold and warm storage tiers, backup and archive targets, media storage, surveillance storage, and large-capacity NAS or SAN buildouts where cost-per-TB is the primary consideration. For latency-sensitive workloads, pair with our SSD options as a caching tier.
Compare Models in This Series
3 models — comparing key specifications to help with model selection.
| Model | Interface | Form Factor | Seq Read | Seq Write | Capacities | DWPD | MTBF |
|---|---|---|---|---|---|---|---|
| WD Gold | SATA 6 Gb/s | 3.5-inch | — | — | 4TB–24TB | — | 2,000,000 hours |
| Seagate Exos | SATA 6 Gb/s | 3.5-inch | — | — | 4TB–24TB | — | 2,000,000 hours |
| Toshiba MG | SATA 6 Gb/s | 3.5-inch | — | — | 4TB–24TB | — | 2,000,000 hours |
Brand-original, incoming-inspected
Every unit is brand-original from the listed manufacturer and incoming-inspected before dispatch. RFQ documentation can include manufacturer datasheets and compliance files when available.
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