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Massive 16TB Exos X18. The SAS interface delivers top-tier throughput for our enterprise data center.
ST16000NM004J
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16TB EXOS X18 HDD 512E/4KN SAS
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ST16000NM004J
- Description:
- 16TB EXOS X18 HDD 512E/4KN SAS
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- Brand:
- Seagate
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ST16000NM004J Overview
ST16000NM004J is a 16 TB HDD engineered for enterprise storage applications, featuring a 3.5-inch form factor, SAS 12Gb/s interface, and a 7200 RPM spindle speed. It is designed with a 512 MB cache and backed by a 550 TB/yr workload rating, ensuring reliable performance for data centers and mission-critical infrastructures.
This helium-sealed drive incorporates rotational vibration sensors for advanced vibration protection and supports AES 256-bit encryption. With an operating temperature range of 5–60°C and efficient power consumption of 8.5 Watts (read/write) and 6 Watts (idle), ST16000NM004J is ideally suited for demanding server, NAS, and enterprise storage environments.
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ST16000NM004J Specifications
- Product Type
- Hard Drive
- Drive Type
- HDD
- Use Case
- Desktop / Server / NAS / Surveillance / Enterprise Storage
- Interface
- SAS 12Gb/s
- Form Factor
- 3.5-inch
- Storage Capacity
- 16 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 512 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 250 MB/s
- Annual Workload Rating
- 550 TB/yr
- Power Consumption (Read/Write)
- 8.5 Watts
- Power Consumption (Idle)
- 6 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Rotational Vibration Sensors
- Operating Temperature
- 5–60°C
- Product Name
- Seagate Exos X16 16TB 7200 RPM SAS Enterprise Hard Drive
- Height
- 1.03 in
- Width
- 4.00 in
- Depth
- 5.79 in
- Weight
- 4.3 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ST16000NM004J |  ST16000VE000 |  ST4000NM005A |  ST6000NM0195 |  ST600MM0099 | |
|---|---|---|---|---|---|
| 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 | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Server | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SAS 12Gb/s | SAS 12Gb/s | SATA III | SAS 12Gb/s | SATA III |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 16 TB | 16 TB | 4 TB | 6 TB | 600 GB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 512 MB | 512 MB | 128 MB | 256 MB | 32 MB |
| Average Latency | N/A | N/A | N/A | N/A | 8.5 ms |
| Data Transfer Rate | Up to 250 MB/s | Up to 300 MB/s | Up to 210 MB/s | Up to 250 MB/s | Up to 150 MB/s |
| Annual Workload Rating | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 55 TB/yr |
| Power Consumption (Read/Write) | 8.5 Watts | 9.0 W | N/A | 9.1 Watts | 8 Watts |
| Power Consumption (Idle) | 6 Watts | 6.0 W | N/A | 7.1 Watts | 5 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | No | AES 256-bit |
| Helium Sealed | Helium-Sealed | Helium-Sealed | No | Helium-Sealed | No |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Single |
| Vibration Protection | Yes | Yes | Yes | Yes | No |
| Advanced Features | Rotational Vibration Sensors | Rotational Vibration Sensors | Rotational Vibration Sensors | Rotational Vibration Sensors | N/A |
| Operating Temperature | 5–60°C | 5–60°C | 5–60°C | 5–60°C | 5–55°C |
| Product Name | Seagate Exos X16 16TB 7200 RPM SAS Enterprise Hard Drive | Seagate Exos X16 ST16000VE000 | ST4000NM005A | Seagate ST6000NM0195 6TB 7200 RPM SAS Enterprise Hard Drive | ST600MM0099 600GB 7200RPM SATA 3.5 HDD |
| Height | 1.03 in | 1.03 in | 1.03 inches | 1.03 inches | 1.03 in |
| Width | 4.00 in | 4.00 in | 4.00 inches | 4.00 inches | 5.79 in |
| Depth | 5.79 in | 5.79 in | 5.79 inches | 5.79 inches | 4.00 in |
| Weight | 4.3 lbs | 4.85 lbs | 1.2 lbs | 1.8 lbs | 3.6 lbs |
Reviews & Ratings
E
Elise Blackwell
4
Superior reliability and data density. Perfect for high-availability server clusters and massive scale-out storage.
J
Julian Rhodes
5
Consistent 7200 RPM performance. These drives handle heavy sequential workloads with absolute professional stability.
N
Nora Kingsley
4
Exceptional workload rating. A robust 16TB solution for mission-critical enterprise environments and cloud storage.
T
Tristan Blake
5
Predictable latency and high endurance. The X18 series continues to set the standard for enterprise HDDs.
M
Maren Scott
5
Reliable SAS connectivity for our rack servers. Outstanding capacity for consolidating large data sets.
Questions & Answers
What is the storage capacity of the ST16000NM004J Exos X18 HDD?
The ST16000NM004J provides 16 TB of raw storage capacity, ideal for high-density enterprise and data-center deployments.
Which interface does the 16 TB Exos X18 HDD use?
This drive uses a dual-port 12 Gb/s SAS interface for high-throughput, low-latency connectivity in server and storage systems.
What is the rotational speed of the ST16000NM004J?
The ST16000NM004J spins at 7,200 RPM, delivering a balance of performance and sustained sequential throughput.
Is the Exos X18 designed for enterprise-class applications?
Yes. The Exos X18 is built for 24/7 enterprise workloads, offering a 550 TB/year duty cycle and advanced reliability features.
What is the annual workload rating of the Exos X18 16 TB HDD?
The drive is rated for up to 550 terabytes written per year, supporting demanding write-intensive applications.
What is the mean time between failures (MTBF) for this drive?
The ST16000NM004J has an MTBF of 2.5 million hours, ensuring high availability in mission-critical environments.
How much cache memory does the Exos X18 include?
This model features 256 MB of DRAM cache to accelerate data buffering and improve sequential throughput.
What is the form factor of the ST16000NM004J?
The drive uses a 3.5-inch form factor (26.1 mm height) compatible with standard enterprise chassis and drive sleds.
Is the Exos X18 compatible with 512e and 4Kn host systems?
Yes. The ST16000NM004J supports both 512e (512-byte emulation) and native 4Kn sector formats for broad compatibility.
What is the average power consumption of this 16 TB HDD?
Average operating power is approximately 9.6 W during read/write operations, optimizing energy efficiency in large arrays.
Does the ST16000NM004J support hardware encryption?
No. This specific model does not include self-encrypting drive (SED) features, though encrypted variants are available separately.
What are the ideal use cases for the Exos X18 16 TB HDD?
It excels in large-scale data warehouses, archiving, backup, and mixed-workload enterprise storage solutions.
What warranty does Seagate offer for the Exos X18?
Seagate provides a five-year limited warranty on the ST16000NM004J, covering defects in materials and workmanship.
How does the Exos X18 handle vibration and shock in multi-drive systems?
It incorporates rotational vibration sensors and robust mechanical design to maintain performance in densely populated racks.
What operating temperature range does this HDD support?
The drive operates reliably between 5 °C and 60 °C, suitable for typical data-center thermal environments.
Does the ST16000NM004J support hot-swapping in enterprise arrays?
Yes. The SAS interface and 3.5-inch form factor allow hot-swap installation and removal in compatible server bays.