SAS HGST SAS drives that randomly stopped spinning up, so I am not sure what happened to them.

HUH721010AL4200 HUH721010AL42C0  HGST Hitachi Ultrastar He10 10TB 7200RPM SAS 12Gbps 256MB Cache (ISE / 4Kn) 3.5-inch Internal Hard Drive DOM 2018



Technical Specifications for HUH721010AL4200

Model
ManufacturerHitachi
Manufacturer Part #HUH721010AL4200
Product LineUltrastar
Product SeriesHe10
Performance
Product TypeInternal Hard Drive
Form Factor3.5-inch
Capacity10 TB
Cache256 MB
Spindle Speed7200 RPM
Average Seek Time8 ms
Drive Interface TypeSAS 12.0 Gbps
Other Information
Features
  • PMR Technology
  • HelioSeal Technology
  • 10TB capacity in a standard 3.5-inch form factor
  • PMR technology works with all capacity enterprise applications & environments
  • Reliable, field-proven, 3rd generation design
  • Superior power efficiency (Watts/TB)
  • Compared to our 8TB  drives
  • 25% more capacity
  • 43% more power efficient (Watts/TB)
  • 25% more reliable (MTBF)
  • 12Gb/s SAS compatible with next-gen data centers; backwards compatible with 6Gb/s SAS
  • 2.5M hours MTBF rating
  • Enterprise and data center applications where capacity density and power efficiency are paramount
  • Cloud & Hyperscale storage
  • Massive scale-out high-density data centers (MSO)
  • Bulk storage using object storage solutions like Ceph and Hadoop to support Big Data Analytics
  • Centralized video surveillance
  • Drop-in ready for all mainstream enterprise capacity applications