ST4000NM0085-20PK - Seagate Hard Drive ST4000NM0085 4TB SATA III | Aztek Computers
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SKU: AY1Y4NRNW0 |  Mfg. Part: ST4000NM0085-20PK  | UPC: 763649088364  |  0 Reviews  |     Share Make an offer

ST4000NM0085-20PK - Seagate Hard Drive ST4000NM0085 4TB SATA III 6Gb/s Enterprise 7200RPM 128MB 3.5inch 4Kn Bare

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Product Overview

Seagate ST4000NM0085 4 TB 3.5" Internal Hard Drive - SATA - 7200rpm - 128 MB Buffer RPM 128MB 3.5IN

Expert Overview

The Seagate ST4000NM0085-20PK is a 4TB 3.5-inch internal hard drive designed for enterprise environments. It utilizes a SATA III 6Gb/s interface and operates at 7200RPM with a 128MB cache. This drive is suitable for IT professionals and businesses requiring reliable, high-capacity storage for servers, data centers, or network-attached storage (NAS) systems. Key features include a 2,000,000-hour MTBF and a 0.44% AFR, indicating suitability for continuous 24/7 operation. The drive supports a 4Kn sector format and offers a maximum sustainable transfer rate of 226MB/s. It incorporates PowerChoice and PowerBalance technologies for optimized power consumption and includes a humidity sensor for environmental monitoring. This bare drive provides a foundational component for building or expanding storage infrastructure where durability and consistent performance are critical.

Technical Specifications

Capacity
4TB
Protection Information (T10 DIF)
N/A
Humidity Sensor
Yes
SuperParity
N/A
Halogen Free
Yes
PowerChoice Technology
Yes
PowerBalance Technology
Yes
Cache
128MB
Advanced Write Caching (Internal NOR flash)
Yes
Vibration, Nonoperating: 10Hz to 500Hz (Grms)
5
MTBF
2,000,000hr
Reliability Rating at Full 247 Operation (AFR)
0.44%
Nonrecoverable Read Errors per Bits Read, Max
1 sector per 10E15
Power-On Hours
8760
Bytes per Sector
4096
Spin Speed
7200RPM
Interface Access Speed (Gb/s)
6.0, 3.0, 1.5
Max Sustainable Transfer Rate
226MB/s
Average Latency (ms)
4.16
Interface Ports
Single

Product Details

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  • SEAGATE
  • ST4000NM0085-20PK
  • 763649088364
  • New
  • 32.45 lbs
  • 20 X 9 X 14
  • Sep 27, 2026
  • Dec 30, 2025
Product Identifiers: Brand: Seagate • Part #: ST4000NM0085-20PK • UPC: 763649088364 • Category: Internal Hard Disk Drives

Frequently Asked Questions

What is the form factor and interface of this hard drive?

This hard drive features a 3.5-inch form factor and uses a SATA III 6Gb/s interface, which is backward compatible with SATA 3Gb/s and 1.5Gb/s.

What is included with the ST4000NM0085-20PK?

The product is described as a "Bare" drive, meaning it typically includes only the hard drive unit itself without cables, mounting hardware, or additional software.

What is the intended use case for this drive?

With a 2,000,000-hour MTBF and 24/7 operation reliability, this drive is suitable for enterprise applications such as servers, data centers, and high-capacity storage arrays where continuous operation and data integrity are essential.

What is the significance of the 4Kn sector size?

The 4Kn (4096 Bytes per Sector) format is an Advanced Format standard that can improve storage efficiency and performance in compatible operating systems and applications compared to traditional 512-byte sectors.

ST4000NM0085-20PK - Seagate Hard Drive ST4000NM0085 4TB SATA III 6Gb/s Enterprise 7200RPM 128MB 3.5inch 4Kn Bare

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