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Silver 3.5 inch SAS hard drive with circuit board visible

Seagate

Seagate ST4000NM0023 4TB 7200RPM 128MB 3.5" SAS internal hard drive

SKU CH-8PJG-7XDG1

3.5-inch SAS hard drive delivers 4 TB at 7200 RPM with a 128 MB cache for server workloads

  • 4TB capacity stores large server datasets
  • 7200RPM rotational speed delivers fast data access
  • 128MB cache buffer improves read/write performance
  • SAS 6Gb/s interface enables high-throughput connectivity
  • Perpendicular Magnetic Recording technology increases storage density

Seagate Constellation ES.3 4TB drive

The Seagate ST4000NM0023 is a 4TB 3.5-inch internal hard drive spinning at 7200RPM with a 128MB cache and a SAS 6Gb/s interface. It is built for server and storage-array environments where sustained throughput and vibration tolerance matter. The unit ships as a zero-hours drive from the Constellation ES.3 line.

Server and array deployments

This drive suits administrators expanding SAS-based RAID arrays, backup targets or nearline storage tiers that demand 7200RPM performance and dual-port SAS connectivity. It is not appropriate for desktop PCs, laptops or external enclosures that lack a SAS controller or backplane. Buyers who need a single-drive upgrade for a consumer motherboard should look elsewhere.

SAS 6Gb/s interface

The single specification that decides fit is the SAS 6Gb/s interface; the drive requires a compatible SAS HBA, RAID controller or backplane to operate and will not function on ports that support only other protocols.

Highlights

  • 4TB capacity stores large server datasets
  • 7200RPM rotational speed delivers fast data access
  • 128MB cache buffer improves read/write performance
  • SAS 6Gb/s interface enables high-throughput connectivity
  • Perpendicular Magnetic Recording technology increases storage density

Specifications

No published specifications for this item yet.

Questions about this item

What controller and port does the ST4000NM0023 need to operate?

It requires a SAS host-bus adapter or RAID controller with a 6Gb/s SAS port and a compatible cable or backplane.

Can the 7200RPM SAS drive share a backplane with 6Gb/s SAS SSDs?

Yes, the drive uses the same 6Gb/s SAS interface, so it can populate the same backplane as SAS SSDs running at that speed.

How can I confirm the 128MB cache is active after installation?

Run the built-in Drive Self Test and check the controller BIOS or management utility; both will report the 128MB buffer size.

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