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18TB Exos X18 SAS drive delivers massive capacity and dependable enterprise speeds.
ST18000NM004J
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18TB EXOS X18 SAS 7.2K RPM 3.5IN
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ST18000NM004J
- Description:
- 18TB EXOS X18 SAS 7.2K RPM 3.5IN
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- Brand:
- Seagate
- Condition:
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ST18000NM004J Overview
ST18000NM004J is a high-capacity HDD engineered for enterprise and data center applications. This 3.5-inch drive features a SAS 12Gb/s interface, a spindle speed of 7200 RPM, an 18 TB storage capacity, and a 256 MB cache. It is built to handle intensive workloads with an annual workload rating of 550 TB/yr and a robust MTBF of 2,000,000 hours, ensuring reliable 24/7 operation.
Designed for high performance and endurance, the ST18000NM004J incorporates advanced features such as a helium-sealed enclosure, integrated vibration protection, and dual actuator technology. With power consumption figures of 9.1 watts during active read/write operations and 6.2 watts in idle mode, this drive is ideally suited for use in data centers, enterprise servers, NAS solutions, and surveillance systems.
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ST18000NM004J 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
- 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)
- 9.1 Watts
- Power Consumption (Idle)
- 6.2 Watts
- Encryption Support
- AES 256-bit
- Helium Sealed
- Helium-Sealed
- Drive Bays Supported
- Multi-bay
- Vibration Protection
- Yes
- Advanced Features
- Dual Actuator
- Operating Temperature
- 5–60°C
- Product Name
- ST18000NM004J
- Height
- 1.03 inches
- Width
- 4 inches
- Depth
- 5.79 inches
- Weight
- 2.2 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ST18000NM004J |  ST6000NM029A |  ST1000NX0423 |  ST4000VX013 |  ST6000NM0115 | |
|---|---|---|---|---|---|
| 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 | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Enterprise Storage |
| Interface | SAS 12Gb/s | SAS 12Gb/s | SAS 12Gb/s | SATA III | SAS 12Gb/s |
| Form Factor | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch | 3.5-inch |
| Storage Capacity | 18 TB | 6 TB | 1 TB | 4 TB | 6 TB |
| Spindle Speed (RPM) | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM | 7200 RPM |
| Cache (Buffer Size) | 256 MB | 256 MB | 128 MB | 128 MB | 256 MB |
| Average Latency | N/A | 4.17 ms | 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 210 MB/s | Up to 250 MB/s |
| Annual Workload Rating | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 9.1 Watts | 9.0 Watts | 9 Watts | 8.0 Watts | 8.0 Watts |
| Power Consumption (Idle) | 6.2 Watts | 5.1 Watts | 5 Watts | 5.0 Watts | 6.0 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | No | 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 | Dual Actuator | Rotational Vibration Sensors | Dual Actuator | Rotational Vibration Sensors | Rotational Vibration Sensors |
| Operating Temperature | 5–60°C | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | ST18000NM004J | Seagate ST6000NM029A 6TB 7200 RPM 256MB Cache SAS Enterprise HDD | ST1000NX0423 | ST4000VX013 Enterprise 4TB HDD | Seagate Exos X16 6TB ST6000NM0115 |
| Height | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches | 1.03 inches |
| Width | 4 inches | 4.0 inches | 5.79 inches | 5.79 inches | 4.01 inches |
| Depth | 5.79 inches | 5.8 inches | 4.01 inches | 7.79 inches | 5.75 inches |
| Weight | 2.2 lbs | 1.80 lbs | 2.1 lbs | 1.5 lbs | 2.0 lbs |
Reviews & Ratings
I
Isabelle Carmichael
5
Stable 7.2K RPM performance for data centers.
M
Marcus Whitfield
5
Reliable SAS connectivity with consistent throughput.
A
Ariana Holloway
5
Excellent enterprise HDD for large-scale backups.
T
Trevor Bennett
5
Professional-grade 18TB storage solution.
Questions & Answers
What is the storage capacity of the Seagate ST18000NM004J?
The ST18000NM004J offers 18TB of raw storage capacity.
What interface does the Seagate Exos X18 use?
It features a dual-port 12Gb/s SAS interface for enterprise connectivity.
What is the rotational speed of the Exos X18?
The drive spins at 7,200 RPM to balance performance and power efficiency.
What is the form factor of the ST18000NM004J?
It is a standard 3.5-inch enterprise hard drive.
What workload rating does the Seagate Exos X18 support?
The Exos X18 is rated for 550TB of annual workload, suitable for high-demand environments.
What is the mean time between failures (MTBF) for the Exos X18?
The drive has an MTBF of 2.5 million hours for maximum reliability.
Is the ST18000NM004J compatible with enterprise servers and storage arrays?
Yes, it is fully compatible with industry-standard SAS backplanes in enterprise servers and arrays.
Can the Seagate Exos X18 be used in a NAS environment?
While designed for SAN and DAS, it can be deployed in enterprise-grade NAS systems that support SAS drives.
Does the Exos X18 support hardware encryption?
Yes, it includes Seagate Secure™ with FIPS 140-2 validated self-encryption for data protection.
What are the power consumption specifications for the ST18000NM004J?
It typically consumes 9.9W during read/write operations and 7.2W in idle mode.
Does the ST18000NM004J feature rotational vibration sensors?
Yes, integrated RV sensors maintain performance in multi-drive enclosures.
What warranty is included with the Seagate Exos X18 ST18000NM004J?
The drive comes with a 5-year limited warranty from the date of purchase.
How does the Exos X18 ensure data security?
It offers secure erase features and self-encryption to protect data at rest and in transit.
What are the operating temperature specifications for the Exos X18?
The operating temperature range is 5°C to 60°C (41°F to 140°F).
Is the Seagate ST18000NM004J hot-swappable?
Yes, it is designed for hot-swap installation in compatible enterprise storage enclosures.