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ST18000NM000J
Seagate Enterprise ST18000NM000J internal hard drive 3.5" 18...
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ST18000NM000J is a high-capacity HDD engineered for demanding enterprise and data center environments. This 18 TB drive features a 3.5-inch form factor, SAS 12Gb/s interface, and a 7200 RPM spindle speed, paired with a 256 MB cache. It is designed with a helium-sealed construction and robust rotational vibration sensors for enhanced stability and longevity. With an annual workload rating of 550 TB/yr and an industry-leading MTBF, ST18000NM000J is built to withstand 24×7 operations in mission-critical settings.
Optimized for enterprise storage applications, this drive offers efficient power consumption—recording approximately 9.5 Watts during read/write operations and 6.8 Watts while idle. Ideal for use in data centers, desktops, NAS systems, and surveillance networks, ST18000NM000J also supports AES 256-bit encryption to ensure data security. Its advanced design and precise engineering make it a dependable choice for environments that demand high performance and consistent reliability.
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 ST18000NM000J |  ZA240NX1A001 |  ST8000NM000A |  ST4000NM002A |  ST6000NM003A | |
|---|---|---|---|---|---|
| Product Type | Hard Drive | Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Drive Type | HDD | HDD | HDD | HDD | HDD |
| Use Case | Enterprise Storage / Data Centers | Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage | Server / Enterprise Storage | Desktop / Server / NAS / Surveillance / Enterprise Storage |
| Interface | SAS 12Gb/s | 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 | 8 TB | 8 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 | 256 MB | 256 MB | 256 MB |
| Average Latency | N/A | N/A | N/A | N/A | N/A |
| Data Transfer Rate | Up to 280 MB/s | 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 | 550 TB/yr | 550 TB/yr | 550 TB/yr | 550 TB/yr |
| Power Consumption (Read/Write) | 9.5 Watts | 8 Watts | 7.2 Watts | N/A | 9.0 Watts |
| Power Consumption (Idle) | 6.8 Watts | 6 Watts | 5.5 Watts | N/A | 6.0 Watts |
| Encryption Support | AES 256-bit | AES 256-bit | AES 256-bit | No | 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 | Rotational Vibration Sensors | Dual Actuator | N/A | N/A | Rotational Vibration Sensors |
| Operating Temperature | 5–55°C | 5–60°C | 5–60°C | 5–60°C | 5–60°C |
| Product Name | Seagate Exos X18 ST18000NM000J | ZA240NX1A001 | ST8000NM000A | ST4000NM002A | ST6000NM003A 6TB Enterprise SATA III HDD |
| Height | 1.03 inches | 1.0 inches | 1.03 inches | 1 inch | 1.03 inches |
| Width | 5.79 inches | 5.8 inches | 5.79 inches | 5.79 inches | 4.00 inches |
| Depth | 4.02 inches | 4.0 inches | 4.01 inches | 4 inches | 5.79 inches |
| Weight | 1.85 lbs | 1.8 lbs | 1.8 lbs | 2.0 lbs | 1.2 lbs |
18TB Exos drive delivers outstanding enterprise capacity with consistent 7200 RPM performance.
Reliable large-scale storage solution for data centers.
Stable SATA III performance with excellent reliability metrics.
High-capacity enterprise HDD with predictable uptime.
Strong sequential performance for backup environments.
The Seagate Enterprise ST18000NM000J provides 18 000 GB (18 TB) of raw storage capacity.
The ST18000NM000J is a 3.5″ Serial ATA III (6 Gb/s) internal hard drive.
The ST18000NM000J spins at 7 200 RPM for a balance of performance and reliability.
It features a 256 MB DRAM cache to accelerate read/write operations.