Seagate Exos 20TB X20z 3.5″

📦 General

• Model: ST20000NM001J

• Series: Exos X20

• Capacity: 20 TB

• Form Factor: 3.5-inch

• Interface: SATA III (6 Gb/s)

• Recording Technology: CMR (Conventional Magnetic Recording)

• Helium-Sealed: Yes

🔧 Performance

• Spindle Speed: 7,200 RPM

• Cache: 256 MB

• Sustained Transfer Rate: Up to 285 MB/s

• Average Latency: ~4.16 ms

• 4K Random IOPS (QD16): ~170 read / ~550 write

🛡️ Reliability

• MTBF: 2.5 million hours

• AFR (Annualized Failure Rate): 0.35%

• Non-Recoverable Read Errors: 1 per 10¹⁵ bits read

• Load/Unload Cycles: 600,000

⚙️ Enterprise Features

• PowerChoice™: Enables power optimization

• PowerBalance™: Balances power and performance

• FastFormat: Supports both 512e and 4Kn sector formats

• SuperParity and ECC: Advanced error correction

• RSA Firmware Verification: Firmware integrity protection

• Hot-Swap Support: Yes

📏 Physical & Environmental

• Dimensions: 147 x 101.85 x 26.1 mm

• Weight: ~670 g

• Operating Temperature: 5°C to 60°C

• Non-Operating Shock: Up to 250 G

• Vibration (Non-Op): ~2.27 Grms