We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver 3.5-inch SAS hard drive bare circuit board visible

Seagate

Seagate ST4000NM0025 4TB 7200 RPM SAS 12Gb/s 128MB 3.5" internal hard drive

SKU CH-36R1-8YBFE MPN ST4000NM0025

4 TB SAS 12 Gb/s enterprise hard drive with 7200 RPM, 128 MB cache and CMR technology for 24×7 bulk-data workloads

  • PackagingBare Drive
  • InterfaceSAS 12Gb/s
  • Capacity4TB
  • RPM7200 RPM
  • Cache128MB
  • Average Latency4.16ms

Options 4TB

  • 4TB capacity stores large enterprise datasets
  • 7200 RPM spindle delivers fast sequential throughput
  • 12Gb/s SAS interface enables high-speed data transfer
  • 128MB cache buffers bursts for smooth performance
  • Engineered for 24x7 workloads up to 550TB per year

Enterprise Capacity Drive

The Seagate ST4000NM0025 is a 4TB 3.5-inch internal hard drive built for enterprise storage servers and arrays. It uses conventional magnetic recording technology and a SAS 12Gb/s interface to deliver consistent performance in 24x7 bulk-data workloads.

Installation and Common Issues

The bare drive mounts in a standard 3.5-inch bay and connects via SAS data and power cables to a compatible controller or backplane. Installation fails when the host system lacks a SAS HBA or RAID card, as the drive will not operate on a standard SATA-only motherboard port.

Pre-Order Checks

Verify that your server or storage enclosure supports 12Gb/s SAS connectivity and provides the correct power connector for enterprise drives. Confirm the chassis can accommodate a 26.10mm drive height and that your RAID controller or HBA firmware is current for 4TB capacity recognition.

Highlights

  • 4TB capacity stores large enterprise datasets
  • 7200 RPM spindle delivers fast sequential throughput
  • 12Gb/s SAS interface enables high-speed data transfer
  • 128MB cache buffers bursts for smooth performance
  • Engineered for 24x7 workloads up to 550TB per year

Specifications

BrandSeagate
SeriesEnterprise Capacity 3.5
ModelST4000NM0025
PackagingBare Drive
InterfaceSAS 12Gb/s
Capacity4TB
RPM7200 RPM
Cache128MB
Average Latency4.16ms
FeaturesCapacity-Optimized Enterprise Hard Drive for Bulk-Data Applications
- 1TB to 8TB*1, 3.5-inch enterprise drive with industry-leading conventional magnetic recording (CMR) technology
- Advanced Write Caching feature enables up to 100% performance improvement in random writes over last-generation drive
- 12Gb/s SAS and SATA 6Gb/s interfaces in industry-standard formats (512n, 512e and 4Kn) for easy integration into replicated and RAID multi-drive storage servers and systems
- State-of-the-art cache, on-the-fly error-correction algorithms, super parity and end-to-end SAS-based data integ
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm
Shipping weight0.69 kg
Package size156 × 135 × 3 mm

Other versions of this model

3 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How can I confirm the ST4000NM0025 is performing correctly after installation?

Check that the BIOS or RAID controller detects a 4000 GB SAS drive at 12 Gb/s, verify SMART data shows zero reallocated sectors, and run a full surface scan that completes without errors.

The listing says Packaging: Bare Drive — what does that include and what must I supply?

You receive only the 3.5-inch drive itself; you must provide a SAS 12 Gb/s cable, a compatible backplane or HBA, mounting screws, and a 12 V / 5 V power connector.

Which interface version should I choose for a 12 Gb/s SAS backplane?

Select the SAS 12 Gb/s model (ST4000NM0025) — it matches the backplane speed and uses the 512n sector format for direct compatibility.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.