Brands Guides About
Seagate ST8000NM0055 8TB Enterprise SATA Hard Drive — main product image
Seagate ST8000NM0055 8TB Enterprise SATA Hard Drive
Seagate ST8000NM0055 8TB Enterprise SATA Hard Drive
Seagate ST8000NM0055 8TB Enterprise SATA Hard Drive
Seagate ST8000NM0055 8TB Enterprise SATA Hard Drive
Seagate

Seagate ST8000NM0055 8TB Enterprise SATA Hard Drive

★★★★★4.4 (4716 reviews)

Enterprise-grade 8TB SATA drive built for 24/7 heavy workloads with 256MB cache and a 5-year warranty

Check availability
Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Seagate ST8000NM0055 is an Exos 7E8 enterprise hard drive delivering 8TB of raw capacity at 7200 RPM across a SATA 6Gb/s interface. In practical terms, the 7200 RPM spindle speed and 256MB cache produce sustained sequential read speeds in the 220-250 MB/s range — not competitive with solid-state storage, but precisely what's needed for bulk data applications where cost-per-terabyte matters more than IOPS. The 512e sector format bridges the gap between modern 4K-sector platter technology and legacy system compatibility, meaning this drive drops into existing RAID controllers and NAS enclosures without firmware gymnastics. With a rated workload of 550TB transferred per year and a 2-million-hour MTBF, this is a drive engineered for sustained, write-heavy enterprise duty cycles.

The ST8000NM0055 fits the sweet spot for NAS builders, surveillance systems, backup servers, and cold-storage tiers where large capacity and continuous operation are non-negotiable. Its Advanced Write Caching and TurboBoost firmware optimizations improve sequential write performance while maintaining data integrity safeguards during power events — though pairing it with a UPS or battery-backed controller remains best practice. The five-year warranty underscores Seagate's confidence in the drive's longevity, and the enterprise firmware's extended error recovery timers prevent premature drive drops in RAID arrays. For anyone building out multi-bay storage on a budget, this drive delivers the capacity, endurance, and reliability that desktop drives simply cannot sustain.

Key Features

Support 8TB of data with an easy-to-integrate SATA HDD

Tackle heavy applications 24x7 with high performance

Reduce TCO with customizable power options

Advanced Write Caching coupled with TurboBoost provides better performance and minimizes the risk of losing data due to unexpected power loss

Enjoy long-term peace of mind with the included five-year limited warranty protection plan

The available storage capacity may vary.

Specifications

Capacity
8TB
Spindle Speed
7200 RPM
Interface
SATA 6Gb/s
Cache
256MB
Sector Format
512e
Form Factor
3.5" Internal
Application
Enterprise
Warranty
5-Year Limited

Pros & Cons

👍 Pros

  • 8TB capacity at 7200 RPM delivers sustained sequential throughput suitable for bulk data ingest and backup workloads
  • 256MB cache with Advanced Write Caching and TurboBoost accelerates sequential writes while protecting against power-loss data corruption
  • Enterprise 550TB/year workload rating supports 24/7 operation in RAID arrays, NAS, and server environments without premature wear
  • 512e sector format ensures backward compatibility with legacy RAID controllers and operating systems that don't support 4Kn
  • Five-year limited warranty reflects enterprise-class reliability expectations and reduces long-term total cost of ownership

👎 Cons

  • 7200 RPM spinning platters deliver roughly 220-250 MB/s sustained sequential reads — an order of magnitude slower than even entry-level SATA SSDs
  • SATA 6Gb/s interface caps theoretical throughput at 600 MB/s, offering no headroom advantage over SAS for enterprise storage controllers
  • Vibration-induced performance degradation in dense multi-bay enclosures requires vibration-dampened trays or Seagate's own IHM sensors not included here
  • No onboard encryption (SED) on this specific model variant — environments requiring hardware-level encryption need the SED SKU
  • Drive weighs approximately 680g, generating noticeable acoustic noise and heat at 7200 RPM in desktop-adjacent environments

Frequently Asked Questions

Yes, the drive uses a standard SATA 6Gb/s interface and fits any 3.5" bay with a SATA connector. However, it is firmware-optimized for enterprise RAID controllers and NAS enclosures — desktop motherboards will recognize it, but you won't benefit from features like advanced error recovery tuning without a hardware RAID controller.
512e (512-byte emulation) means the drive uses 4K physical sectors internally but presents them as 512-byte logical sectors to the host. This ensures backward compatibility with older operating systems and RAID controllers that don't support 4Kn (4K native). Windows 7 and later, Linux 2.6+, and all modern RAID controllers handle 512e without issue.
Advanced Write Caching uses the 256MB onboard cache to buffer write operations for throughput, while TurboBoost optimizes the caching algorithm for sequential workloads. In the event of unexpected power loss, the drive firmware prioritizes flushing critical metadata to platters, reducing the risk of file system corruption — though a UPS or battery-backed RAID controller is still recommended for full protection.
Seagate rates the Exos 7E8 series for up to 550TB per year of data transferred, which is roughly 100x the workload rating of a typical desktop drive. This makes it suitable for write-heavy enterprise applications like surveillance, backup servers, and database logging.
The ST8000NM0055 works well in ZFS, mdadm, and other software RAID configurations. Its enterprise firmware includes longer error recovery timeouts that align with RAID controller expectations, reducing the chance of a drive being prematurely dropped from an array during sector recovery.

Related Products