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ST6000NM021A
Seagate Enterprise ST6000NM021A internal hard drive 3.5" 600...
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Enterprise Clients
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
ST6000NM021A is a high-performance HDD engineered for enterprise and data center applications, featuring a 3.5-inch form factor with a SATA III interface. It delivers a robust 6 TB of storage capacity, operates at 7200 RPM, and is equipped with a 256 MB cache to efficiently handle intensive workloads of up to 550 TB/yr with an MTBF of 2,000,000 hours, ensuring long-term reliability and continuous 24/7 operation.
ST6000NM021A incorporates advanced design elements including a helium-sealed architecture that minimizes internal friction and enhances thermal efficiency, along with integrated vibration protection to maintain peak performance in multi-drive environments. Ideal for use in data centers, servers, NAS systems, and surveillance applications, it also offers optimized power consumption with approximately 8.9 Watts during read/write operations and 6.5 Watts in idle mode.
ST6000NM021A price is is available on request. Get immediate quote.
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| ST6000NM021A |  XS3840TE70004 |  ST12000NM001G |  ST8000VX004 |  ST600MM0009 | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SATA III | SATA III | SAS 12Gb/s | SATA III | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 6 TB | 4 TB | 12 TB | 8 TB | 600 GB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 256 MB | 256 MB | 64 MB |
| Annual Workload Rating | 550 TB/yr | 180 TB/yr | 550 TB/yr | 550 TB/yr | 300 TB/yr |
| Encryption Support | No | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit |
| Helium Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Multi-bay |
| Vibration Protection | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | 5–60°C | 5–55°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | ST6000NM021A | XS3840TE70004 | Seagate Exos X12 12TB Enterprise Hard Drive | ST8000VX004 8TB Enterprise HDD | ST600MM0009 600GB 7200 RPM Enterprise HDD |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 5.79 inches | 5.79 inches | 4.00 inches | 5.79 inches | 4 inches |
| Depth | 4.00 inches | 4.11 inches | 5.79 inches | 4.01 inches | 5.79 inches |
| Weight | 1.6 lbs | 1.2 lbs | 2.00 lbs | 1.80 lbs | 2.07 lbs |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Enterprise 6TB drive provides stable SATA performance for servers.
Reliable 7200 RPM speeds with strong durability.
Consistent throughput in data center environments.
Dependable enterprise HDD with predictable uptime.
Professional-grade storage solution for business workloads.
The Seagate Enterprise ST6000NM021A delivers 6TB (6000 GB) of raw storage, ideal for high-density data centers and enterprise applications.
The ST6000NM021A uses a SATA III (6 Gb/s) interface, ensuring broad compatibility and high-speed data transfers.
This drive is a 3.5-inch form factor hard disk drive, designed for standard enterprise servers and storage enclosures.
The ST6000NM021A spins at 7200 RPM, delivers up to 255 MB/s sustained transfer rates, and features a 256 MB cache for optimized I/O performance.
The Seagate Enterprise ST6000NM021A is rated for 550 TB/year workload, suitable for 24×7 enterprise environments.
This hard drive offers an MTBF of 2.5 million hours, reflecting enterprise-class reliability and endurance.
Yes, the ST6000NM021A is RAID-certified and optimized for multi-drive arrays in enterprise RAID systems.
The drive features a 256 MB DRAM cache buffer, speeding up sequential and random data access.
Seagate provides a five-year limited warranty on the ST6000NM021A, covering defects and hardware failures.
Typical power usage is 7.8 W during read/write operations and 5.3 W in idle mode, optimizing energy efficiency.
The drive operates between 5 °C and 60 °C and can endure non-operating temperatures from –40 °C to 70 °C.
Yes, the ST6000NM021A is designed for continuous operation in enterprise data centers with a 24×7 workload rating.
This model does not include built-in hardware encryption; for secure drive options, consider Seagate’s encrypted Enterprise drives.
Ideal use cases include database storage, virtualization, cloud environments, backup and archival, and high-performance computing.
Mount the 3.5″ drive in an available bay, connect the SATA III data cable and power cable, then configure it in your server or storage OS.
The ST6000NM021A is compatible with all major OS platforms supporting SATA drives, including Windows Server, Linux distributions, and VMware.
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