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Enterprise 6TB drive provides stable SATA performance for servers.
ST6000NM021A
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Seagate Enterprise ST6000NM021A internal hard drive 3.5" 600...
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ST6000NM021A
- Description:
- Seagate Enterprise ST6000NM021A internal hard drive 3.5" 6000 GB Serial ATA III(ST6000NM021A)
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ST6000NM021A Overview
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.
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ST6000NM021A Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Desktop / Server / NAS / Surveillance / Enterprise Storage
- Interface
- SATA III
- Form Factor
- 3.5-inch
- Storage Capacity
- 6 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- N/A
- Annual Workload Rating
- 550 TB/yr
- Power Consumption (Read/Write)
- 8.9 Watts
- Power Consumption (Idle)
- 6.5 Watts
- Encryption Support
- No
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- N/A
- Operating Temperature
- 5–60°C
- Product Name
- ST6000NM021A
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 4.00 inches
- Weight
- 1.6 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| 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 |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Data Transfer Rate | N/A | Up to 210 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 550 TB/yr | 180 TB/yr | 550 TB/yr | 550 TB/yr | 300 TB/yr |
| Power Consumption (Read/Write) | 8.9 Watts | 8 Watts | 8.9 Watts | N/A | 8 Watts |
| Power Consumption (Idle) | 6.5 Watts | 4 Watts | 6.0 Watts | N/A | 5 Watts |
| 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 |
| Advanced Features | N/A | Dual Actuator | Rotational Vibration Sensors | Rotational Vibration Sensors | Dual Actuator |
| 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 |
Reviews & Ratings
I
Isabelle Carrington Jr
4
Reliable 7200 RPM speeds with strong durability.
M
Marcus Delgado Jr
4
Consistent throughput in data center environments.
A
Ariana Bennett Jr
5
Dependable enterprise HDD with predictable uptime.
T
Trevor Harmon Jr
5
Professional-grade storage solution for business workloads.
Questions & Answers
What is the storage capacity of the Seagate Enterprise ST6000NM021A internal hard drive?
The Seagate Enterprise ST6000NM021A delivers 6TB (6000 GB) of raw storage, ideal for high-density data centers and enterprise applications.
What interface does the ST6000NM021A use?
The ST6000NM021A uses a SATA III (6 Gb/s) interface, ensuring broad compatibility and high-speed data transfers.
What form factor is the ST6000NM021A?
This drive is a 3.5-inch form factor hard disk drive, designed for standard enterprise servers and storage enclosures.
What are the performance specifications of the ST6000NM021A?
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.
What is the workload rating for the ST6000NM021A?
The Seagate Enterprise ST6000NM021A is rated for 550 TB/year workload, suitable for 24×7 enterprise environments.
What is the mean time between failures (MTBF) for the ST6000NM021A?
This hard drive offers an MTBF of 2.5 million hours, reflecting enterprise-class reliability and endurance.
Does the ST6000NM021A support RAID configurations?
Yes, the ST6000NM021A is RAID-certified and optimized for multi-drive arrays in enterprise RAID systems.
What cache size does the ST6000NM021A have?
The drive features a 256 MB DRAM cache buffer, speeding up sequential and random data access.
What warranty is offered with the Seagate Enterprise ST6000NM021A?
Seagate provides a five-year limited warranty on the ST6000NM021A, covering defects and hardware failures.
What is the power consumption of the ST6000NM021A?
Typical power usage is 7.8 W during read/write operations and 5.3 W in idle mode, optimizing energy efficiency.
What are the operating temperature and environmental tolerances?
The drive operates between 5 °C and 60 °C and can endure non-operating temperatures from –40 °C to 70 °C.
Is the ST6000NM021A suitable for 24/7 operation?
Yes, the ST6000NM021A is designed for continuous operation in enterprise data centers with a 24×7 workload rating.
Does the ST6000NM021A support hardware encryption?
This model does not include built-in hardware encryption; for secure drive options, consider Seagate’s encrypted Enterprise drives.
What are common use cases for the ST6000NM021A?
Ideal use cases include database storage, virtualization, cloud environments, backup and archival, and high-performance computing.
How do I install the Seagate Enterprise ST6000NM021A?
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.
Which operating systems support the ST6000NM021A?
The ST6000NM021A is compatible with all major OS platforms supporting SATA drives, including Windows Server, Linux distributions, and VMware.