Toshiba 20TB Enterprise 3.5 Inch Hard Drive – 20TB 3.5-inch enterprise SATA hard drive with 7200 RPM, 1024 MB (1 GB) cache, SATA 6 Gb/s interface, helium-sealed FC‑MAMR design, CMR recording, 550 TB/year workload rating, ~268 MB/s sustained transfer rate, 2.5M hours MTTF, built for cloud-scale servers, storage arrays, and data centers.

Product Overview
The Toshiba HDEB038GEA51F is a 20TB enterprise-class 3.5" HDD from the MG11 series, designed for high-density, always-on storage in servers, SAN/NAS arrays, and cloud infrastructure. It uses Toshiba’s helium-sealed, 10-disk platform with Flux Control Microwave Assisted Magnetic Recording (FC‑MAMR) to achieve 20TB capacity in a standard 3.5" form factor while maintaining Conventional Magnetic Recording (CMR) compatibility for broad OS and RAID support. Performance is rated at 7200 RPM with a large 1024 MB (1 GB) cache and SATA 6 Gb/s interface, delivering sustained sequential transfers around 268 MB/s. Reliability features include a 550 TB/year workload rating, 2.5 million hours MTTF, advanced vibration tolerance, and Persistent Write Cache technology to protect against data loss during sudden power events. Power efficiency is optimized for rack-scale deployments, and the drive is RoHS and halogen-free compliant. Toshiba typically backs enterprise MG-series drives with a 5-year limited warranty.

Key Features
- 20TB Capacity (CMR) – Massive storage with conventional magnetic recording for wide compatibility.
- FC‑MAMR + Helium-Sealed Design – Advanced recording tech and sealed enclosure for high density and reliability.
- 7200 RPM + 1024 MB Cache – Strong sequential performance for enterprise workloads.
- SATA 6 Gb/s Interface – Standard enterprise connectivity for servers and storage arrays.
- ~268 MB/s Sustained Transfer Rate – Consistent throughput for large files and backups.
- 2.5M Hours MTTF – High reliability for mission-critical applications.
- Persistent Write Cache – Data-loss protection during unexpected power loss.
- Low Power Profile – Optimized watts-per-TB for better TCO in large deployments.

Specifications
- Product code: HDEB038GEA51F
- Product Description : Toshiba 20TB Enterprise 3.5 Inch Hard Drive
- Capacity: 20 TB
- Form Factor: 3.5 inch
- Interface: SATA 6 Gb/s (6.0 Gbit/s)
- Rotational Speed: 7200 RPM
- Cache: 1024 MB (1 GB)
- Recording Technology: CMR with FC‑MAMR
- Sector Format: 512e (Advanced Format)
- Sustained Transfer Rate: ~268 MB/s
- Workload Rate: Up to 550 TB/year
- MTTF: 2.5 million hours (~0.35% AFR)
- Power Consumption:
   Active (typical): ~9.3 W
   Idle: ~4.38 W
- Operating Temperature: 5°C to 55°C
- Shock (Operating / Non-operating): 70G / 250G
- Vibration (Operating): 0.75G (5–300 Hz)
- Dimensions: ~147 × 101.85 × 26.1 mm
- Weight: ~720 g