Seagate
Seagate Exos X18 ST18000NM005J 18TB 7200 RPM 256MB Cache SAS 12Gb/s 3.5" internal hard drive
- SAS 12Gb/s
- 18TB
$391.99
0.00499249BTC
In stock
Seagate
Seagate Exos X18 ST18000NM001J 18TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" internal hard drive
An 18 TB enterprise hard drive with 7200 RPM, 256 MB cache and SATA 6.0 Gb/s interface
- InterfaceSATA 6.0Gb/s
- Capacity18TB
- NAND Flash Memory TypeHard Drive
- RPM7200 RPM
- Cache256MB
- Average Latency4.16ms
Options SATA 6.0Gb/s
- SAS 12Gb/s
- SATA 6.0Gb/s
- Market-leading 18TB capacity maximises petabytes per rack
- Helium sealed design lowers power and weight per terabyte
- 5M-hour MTBF rating backs enterprise-class reliability
- 7200 RPM with 256MB cache delivers high-throughput performance
- SATA 6.0Gb/s interface supports large-scale data transfers
Enterprise 18 TB SATA drive
The Seagate Exos X18 ST18000NM001J is a 3.5-inch internal hard drive built for enterprise storage arrays. It delivers 18 TB of capacity on a SATA 6.0 Gb/s interface, spins at 7 200 RPM and provides a 256 MB cache to sustain heavy sequential workloads in cloud and scale-out data centres.
Suited for hyperscale and archive workloads
This drive targets operators who need maximum terabytes per rack and a 2.5 M-hour MTBF rating for continuous operation. It is less appropriate for buyers who need the low latency of solid-state media or a smaller form factor for desktop enclosures.
18 TB capacity decision
The single specification that determines fit is the 18 TB capacity combined with the SATA 6.0 Gb/s interface; if the storage pool requires that density on a standard SATA backplane this model matches the requirement, otherwise a different capacity or interface must be chosen.
Highlights
- Market-leading 18TB capacity maximises petabytes per rack
- Helium sealed design lowers power and weight per terabyte
- 5M-hour MTBF rating backs enterprise-class reliability
- 7200 RPM with 256MB cache delivers high-throughput performance
- SATA 6.0Gb/s interface supports large-scale data transfers
Specifications
| Brand | Seagate |
|---|---|
| Series | Exos X18 |
| Model | ST18000NM001J |
| Interface | SATA 6.0Gb/s |
| Capacity | 18TB |
| NAND Flash Memory Type | Hard Drive |
| RPM | 7200 RPM |
| Cache | 256MB |
| Average Latency | 4.16ms |
| Features | Market-leading 18TB HDD offering the highest capacity available for more petabytes per rack Highly reliable performance with enhanced caching, making it the logical choice for cloud data center and massive scale-out data center applications Hyperscale SATA model tuned for large data transfers and low latency PowerBalance feature optimizes Watts/TB Maximize total cost of ownership savings through lower power and weight with helium sealed-drive design Proven helium side-sealing weld technology for added handling robustness and leak protection Digital environmental sensors to monitor in |
| Usage | For Enterprise Storage |
| Form Factor | 3.5" |
| Height (maximum) | 26.10mm |
| Width (maximum) | 101.85mm |
| Length (maximum) | 147.00mm |
| Shipping weight | 0.91 kg |
| Package size | 178 × 152 × 51 mm |
Other versions of this model
1 more in the same range
Same family, different memory, cooler or clock — compare before you commit.
Questions about this item
Do I need a SATA 6.0Gb/s port and a 3.5-inch drive bay to install the ST18000NM001J?
Yes, the drive uses a SATA 6.0Gb/s interface and a standard 3.5-inch form factor, so your system must provide a compatible SATA data port, a SATA power connector, and a 3.5-inch mounting bay.
Will the ST18000NM001J work alongside my older 3.5-inch SATA drives in the same array?
It will operate on the same SATA 6.0Gb/s bus as older 3.5-inch drives, but the 18TB capacity and 7200 RPM speed may change rebuild times and power draw compared with smaller, slower units.
How can I verify the Exos X18 is running at 7200 RPM after installation?
Check the drive’s reported rotational speed in your BIOS, UEFI, or a SMART monitoring tool; it should show 7200 RPM and a SATA 6.0Gb/s link rate.
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