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Massive 18TB capacity. The Exos X18 offers incredible data density and reliable enterprise performance.
ST18000NM001J
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18TB EXOS X18 HDD 512E/4KN SATA SED 3.5IN
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ST18000NM001J
- Description:
- 18TB EXOS X18 HDD 512E/4KN SATA SED 3.5IN
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- Brand:
- Seagate
- Condition:
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ST18000NM001J Overview
ST18000NM001J is a high-performance HDD engineered for enterprise applications, featuring a 3.5-inch form factor and a SATA III interface. The drive operates at 7200 RPM, offers an 18 TB storage capacity, and is equipped with a 256 MB cache to ensure efficient data handling for demanding workloads.
Designed with reliability in mind, ST18000NM001J supports an annual workload rating of 550 TB/yr and includes advanced features such as a helium-sealed design, vibration protection, and AgileArray technology. Its low power consumption of 7.0 Watts (read/write) and 5.3 Watts (idle) make it an ideal choice for use in data centers, desktops, NAS environments, surveillance systems, and other enterprise storage applications.
ST18000NM001J price is is available on request. Get immediate quote.
Request bulk order quote for ST18000NM001J for additional pricing. Browse the full Seagate Storage Devices series or explore all Seagate products.
ST18000NM001J 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
- 18 TB
- Spindle Speed (RPM)
- 7200 RPM
- Cache (Buffer Size)
- 256 MB
- Average Latency
- N/A
- Data Transfer Rate
- Up to 250 MB/s
- Annual Workload Rating
- 550 TB/yr
- Power Consumption (Read/Write)
- 7.0 Watts
- Power Consumption (Idle)
- 5.3 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- AgileArray
- Operating Temperature
- 5–60°C
- Product Name
- ST18000NM001J 18TB Enterprise HDD
- Height
- 1.03 inches
- Width
- 5.79 inches
- Depth
- 8.74 inches
- Weight
- 2.1 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ST18000NM001J |  XA960ME10063 |  ST8000VN004 |  ST12000NE0008 |  ST4000VN008 | |
|---|---|---|---|---|---|
| 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 | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Desktop / Server / NAS |
| Interface | SATA III | SATA III | 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 | 18 TB | 4 TB | 8 TB | 12 TB | 4 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 256 MB | 256 MB | 128 MB |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Data Transfer Rate | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 250 MB/s | Up to 210 MB/s |
| Annual Workload Rating | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 300 TB/yr |
| Power Consumption (Read/Write) | 7.0 Watts | 8 Watts | 7.0 Watts | 8.1 Watts | 6.8 Watts |
| Power Consumption (Idle) | 5.3 Watts | 4 Watts | 4.0 Watts | 5.5 Watts | 4.2 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | AES 256-bit | No |
| Helium Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | Helium-Sealed | No |
| Drive Bays Supported | Multi-bay | Multi-bay | Multi-bay | Multi-bay | Multi-bay |
| Vibration Protection | Yes | Yes | Yes | Yes | Yes |
| Advanced Features | AgileArray | Dual Actuator | Rotational Vibration Sensors | Rotational Vibration Sensors | N/A |
| Operating Temperature | 5–60°C | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | ST18000NM001J 18TB Enterprise HDD | XA960ME10063 High Performance Enterprise HDD | Seagate Exos ST8000VN004 | Seagate Exos X12 12TB Enterprise Hard Drive | Seagate Barracuda ST4000VN008 |
| Height | 1.03 inches | 1.02 inches | 1.03 inches | 1.03 inches | 1.04 inches |
| Width | 5.79 inches | 5.79 inches | 5.78 inches | 4.00 inches | 5.79 inches |
| Depth | 8.74 inches | 8.26 inches | 8.26 inches | 5.79 inches | 4.00 inches |
| Weight | 2.1 lbs | 3.3 lbs | 4.0 lbs | 1.82 lbs | 1.2 lbs |
Reviews & Ratings
S
Sienna Miller
4
Top-tier reliability for our cloud infrastructure. Fast SATA interface with impressive sequential transfer speeds.
J
Julian Rhodes
5
Consistent performance even under heavy workloads. The SED feature provides the extra security we need.
T
Tessa Quinn
4
Outstanding 18TB storage solution. Built for data centers, it delivers high efficiency and low latency.
B
Brooks Elliott
5
Remarkable uptime in our massive RAID arrays. The best high-capacity drive for enterprise archives.
M
Maren Scott
4
Stable and quiet for its size. The 512e format ensures compatibility with our legacy systems.
Questions & Answers
What is the storage capacity of the ST18000NM001J EXOS X18 HDD?
The ST18000NM001J offers 18 TB of raw storage capacity, ideal for large-scale data archiving and enterprise workloads.
Which interface does the ST18000NM001J use?
It uses a SATA 6 Gb/s interface, ensuring broad compatibility with standard server and desktop controllers.
What sector sizes are supported by the EXOS X18 ST18000NM001J?
This drive supports both 512e (512-byte emulation) and native 4Kn (4,096-byte) sector formats for flexible deployment.
What form factor and rotational speed does the ST18000NM001J offer?
The drive comes in a 3.5-inch form factor and spins at 7,200 RPM to balance performance and power efficiency.
Does the ST18000NM001J include hardware encryption?
Yes. It features built-in Self-Encrypting Drive (SED) technology with AES-256 encryption to protect data at rest.
What are the sequential read and write performance figures?
The EXOS X18 delivers up to 267 MB/s sustained sequential transfer rates for both reads and writes under optimal conditions.
What is the rated annual workload for the EXOS X18 HDD?
It supports a 550 TB/year workload rating, making it suitable for heavy enterprise and cloud storage applications.
What is the MTBF (Mean Time Between Failures) of the ST18000NM001J?
The drive is rated for 2.5 million hours MTBF, reflecting high reliability in 24/7 enterprise environments.
What power consumption can I expect from this 18 TB HDD?
Typical operating power is 8.9 W during read/write and 5.3 W at idle, optimizing energy efficiency in large arrays.
Is the EXOS X18 ST18000NM001J compatible with RAID configurations?
Yes. Its workload rating, error recovery controls, and vibration tolerance make it RAID-ready for enterprise systems.
What environmental specifications does this drive support?
It operates between 0 °C and 60 °C and withstands non-operating temperatures from –40 °C to 70 °C.
What are the shock and vibration tolerances of the ST18000NM001J?
It can tolerate 70 Gs of shock (non-operating) and supports 2.5 Grms operating vibration for robust data center use.
What warranty does Seagate offer for the EXOS X18 HDD?
Seagate provides a 5-year limited warranty along with optional data recovery services for enterprise deployments.
Which use cases are ideal for the EXOS X18 18 TB drive?
It excels in hyperscale data centers, cloud storage, object stores, and cold/archive tiers requiring high capacity and reliability.
How does the built-in encryption impact performance?
Hardware encryption incurs negligible overhead thanks to onboard AES-256 engines, preserving full drive performance.
Can I hot-swap the ST18000NM001J in my server array?
Yes. The 3.5 inch SATA interface supports hot-plug capabilities in compliant rack-mount and tower servers.
How do I integrate the EXOS X18 into my existing storage infrastructure?
Simply mount the 3.5 inch drive in a SATA-compatible bay, configure host BIOS/RAID settings, and initialize in your OS.