COVID-19 Update: Orders continue to ship from our warehouse but may experience some delivery delays.
Seagate IronWolf Pro 18TB 256MB Cache 7200rpm SATA 6.0Gb/s Internal Hard Drive
Product #86404 | SKU HDDSE8300
Special Order Usually ships in 3 - 4 weeks
0.0 (no ratings yet) Thanks for your rating!

Seagate IronWolf Pro 18TB 256MB Cache 7200rpm SATA 6.0Gb/s Internal Hard Drive

Product #86404 | SKU HDDSE8300
Special Order Usually ships in 3 - 4 weeks

Product Features
  • 300TB/year user workload rate, optimised to run in network-attached storage 24x7.
  • NAS-Optimised performance with AgileArray firmware and built-in rotational vibration sensors
  • IronWolf Health Management (IHM) for drive health monitoring
  • 3 years of Rescue Data Recovery Services included
Customer Reviews
0.0 (no ratings yet) Thanks for your rating!
Product Details
  • Product: #86404
  • SKU: HDDSE8300
Not currently for sale
Contact us for more information


This NAS-optimized, 18TB IronWolf Pro Hard Drive from Seagate is built for multi-user NAS environments and high workload rates, and is enhanced with CMR technology & AgileArray firmware for 24x7 optimal reliability and system scalability.

Key Features:

Built for NAS

300TB/year user workload rate, optimized to run in network attached storage 24x7.

Drive Health Monitoring

Provides prevention, intervention, and recovery with compatible NAS to monitor drive health.

NAS-Optimised Performance

AgileArray firmware coupled with built-in rotational vibration sensors provide reliable storage for NAS with little lag or down time, even during the heaviest of workloads.

Data Protections

Three years of Rescue Data Recovery Services protecting against unexpected data loss from power outages, natural disasters, user error, viruses, and more.

Connected Home

Manage all of your data backup and streaming media needs.

Creative Professionals

Handle collaborative projects and workloads.

Business Environments

IronWolf drives help to define business resilience and continuity with IronWolf Health Management.


Heads 18
Disks 9
Bytes per logical sector 512
Bytes per physical sector 4096
Recording density, KBPI (Kb/in max) 2470
Track density, KTPI (ktracks/in avg.) 482
Areal density, (Gb/in2 avg) 1146
Spindle speed (RPM) 7200
Internal data transfer rate (Mb/s max) 2899
Sustained data transfer rate OD (MiB/s max) 247
(260 MB/s max)
I/O data-transfer rate (MB/s max) 600
ATA data-transfer modes supported PIO modes 0-4
Multiword DMA modes 0-2
Ultra DMA modes 0-6
Cache buffer 256MB (262,144KB)
Weight (maximum) 670g (1.477 lb)
Average latency 4.16ms
Power-on to ready (sec) (typ/max) 25/30
Standby to ready (sec) (typ/max) 25/30
Startup current (typical) 12V (peak) 2.0A
Voltage tolerance (including noise) 5V ± 5%
12V ± 10%
Operating temperature† (Drive Reported Temperature) 5° to 65°C
Non-Operating temperature -40° to 70°C
Temperature gradient (°C per hour max) 20°C (operating)
20°C (nonoperating)
5% to 95% (operating)
5% to 95% (nonoperating)
Relative humidity gradient 20% per hour max
Altitude, operating -304.8 m to 3,048 m
(-1000 ft to 10,000+ ft)
Altitude, nonoperating (below mean sea level, max) -304.8 m to 12,192 m
(-1000 ft to 40,000+ ft)
Operational Shock (2 ms) 50 Gs
Non-Operational Shock (2 ms) 200 Gs
Linear Random Operating Vibration 5-500 Hz: 0.70 Grms
Random Rotary Operating Vibration 20-1500Hz: 12.5 rads/s²
Linear Random Non-Operating Vibration 2-500 Hz: 2.27 Grms
Drive acoustics, sound power (bels) Idle:
2.8 (typical)
3.0 (max)
During periods of drive idle, some offline activity may occur according to the SMART specification, which may increase acoustic and power to operational levels.

Performance seek:
3.2 (typical)
3.4 (max)
Nonrecoverable read errors 1 sector per 10^15 bits readAnnualised Failure Rate (AFR)*
0.73% based on 8760 POH
Maximum rate of <300TB/year
Workloads exceeding the annualized rate may degrade the drive MTBF and impact product reliability. The Annualized Workload Rate is in units of TB per year, or TB per 8760 power on hours.
Workload Rate = TB transferred * (8760 / recorded power on hours).
Load-unload cycles 600,000
Supports Hotplug operation per Serial ATA Revision 3.3 specification Yes
Notes * One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.
* See Section 2.10, "Reliability" for rated MTBF device operating condition requirements

In The Box

  • Seagate IronWolf Pro 18TB 256MB Cache 7200rpm SATA 6.0Gb/s Internal Hard Drive


0.0 (no ratings yet)
Own or use this product?
Give it a quick rating:
Thanks for your rating!
Share your thoughts with other customers:
Write a review
  • Product: Seagate IronWolf Pro 18TB 256MB Cache 7200rpm SATA 6.0Gb/s Internal Hard Drive
  • Manufacturer: Seagate
  • Model: HDDSE8300
  • SKU: HDDSE8300
  • RM Product #: 86404