Seagate
Seagate Exos X18 18TB SAS 12Gb/s 3.5" internal hard drive
Enterprise-grade 18TB SAS hard drive with 7,200 RPM spindle speed and 256MB cache for high-density data centre storage
- 18 TB capacity fits massive datasets in a single 3.5" drive
- 12 Gb/s SAS interface moves data quickly through enterprise controllers
- 256 MB cache absorbs burst workloads for smoother throughput
- 7,200 RPM spindle speed sustains performance on mixed read-write tasks
- 2,500,000 hours MTBF rating supports continuous operation in data centres
High-capacity enterprise drive
The Seagate Exos X18 is an 18TB SAS 12Gb/s 3.5-inch internal hard drive built for continuous operation. It delivers 7,200 RPM spindle speed and a 256MB cache to support sustained throughput in demanding environments. A helium-sealed design and PowerBalance technology optimise watts per terabyte for efficient high-density deployments.
Suited for scale-out storage arrays
This drive fits cloud, hyperscale and massive scale-out data centres running distributed file systems such as Hadoop or Ceph. It also serves enterprise backup, object storage and big-data analytics workloads. Systems without a 12Gb/s SAS host interface cannot install this unit. Buyers needing a different interface or a lower capacity should consider other models.
12Gb/s SAS interface decides compatibility
The drive connects exclusively through a 12Gb/s SAS interface, so the host controller or backplane must support that standard. Without a matching SAS connection the drive will not function, regardless of bay size or power availability. Verify the host interface before purchase.
Helstu kostir
- 18 TB capacity fits massive datasets in a single 3.5" drive
- 12 Gb/s SAS interface moves data quickly through enterprise controllers
- 256 MB cache absorbs burst workloads for smoother throughput
- 7,200 RPM spindle speed sustains performance on mixed read-write tasks
- 2,500,000 hours MTBF rating supports continuous operation in data centres
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Will the 12Gb/s SAS interface work with my existing 6Gb/s SAS controller?
The drive uses a 12Gb/s SAS interface that negotiates down to 6Gb/s on older controllers, so it will operate at the lower speed without configuration changes.
How can I verify the 256MB cache and 7200 RPM spindle speed are active after installation?
Check the drive’s reported cache size and rotational speed in your operating system’s disk utility or SMART data; both values should match the 256MB cache and 7,200 RPM specifications.
Does the 3.5-inch 18TB drive ship with mounting screws or a SAS cable, or must I buy them separately?
The drive is supplied as a bare 3.5-inch unit; mounting screws and a SAS data cable are not included and must be sourced separately.
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