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Silver 3.5 inch SAS hard drive with exposed circuit board

Seagate

Seagate ST4000NM0023 9ZM270 4TB 7200RPM 6Gbps 3.5" SAS HDD internal hard drive

SKU CH-5ACT-86E6Z

Enterprise 3.5" SAS hard drive with 4TB capacity, 7200RPM speed and 128MB cache

  • 4 TB capacity stores large datasets
  • 7200 RPM spindle speeds up data access
  • SAS 6 Gbps interface connects to servers
  • 128 MB cache buffers frequent reads
  • Perpendicular recording packs bits densely

4 TB SAS enterprise drive

The Seagate Constellation ES.3 ST4000NM0023 is a 4000 GB internal hard drive built for 3.5-inch server bays. It spins at 7200 RPM and connects through a 3.5" SAS-6Gb/s interface with a 128 MB cache buffer. The drive is sold new and carries a one-year warranty.

Suited for server arrays, not desktop PCs

This unit targets administrators who need high-capacity, 7200 RPM storage in SAS-based RAID or JBOD configurations. Features such as Drive Self Test, Background Media Scan and Perpendicular Magnetic Recording support continuous operation in multi-drive enclosures. Buyers without a SAS backplane or HBA should look elsewhere because the drive cannot attach to standard desktop interfaces.

SAS-6Gb/s interface decides compatibility

The single specification that determines whether this part fits is the 3.5" SAS-6Gb/s interface; the host system must provide a matching SAS port or controller. No other connector or protocol is supported by this model.

Highlights

  • 4 TB capacity stores large datasets
  • 7200 RPM spindle speeds up data access
  • SAS 6 Gbps interface connects to servers
  • 128 MB cache buffers frequent reads
  • Perpendicular recording packs bits densely

Specifications

No published specifications for this item yet.

Questions about this item

Does the ST4000NM0023 ship with cables, mounting hardware or a SAS controller?

The drive is supplied as a bare 3.5" SAS unit; SAS data and power cables, mounting screws and a compatible SAS HBA or RAID controller must be purchased separately.

Is the 4000GB 7200RPM model the only capacity available in the Constellation ES.3 line?

The listed part number ST4000NM0023 is the 4000GB 7200RPM variant; other capacities in the same series carry different model numbers and are not covered by this listing.

What does the 6Gbps SAS interface mean for real-world throughput in a server?

The 6Gbps SAS link provides a 6Gbit/s bus connection; actual sustained transfer is governed by the 7200RPM platters and 128MB buffer during sequential workloads.

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