ST18000NM004J Seagate Exos X18 – hard drive – 18 TB – SAS 12Gb/s

ST18000NM004J Specifications

Seagate Exos X18 18 TB Enterprise Hard Disk Drive

Manufacturer: Seagate
Manufacturer Model: ST18000NM004J
Product Line: Exos X18
Product Series: 3.5‑inch 18 TB Helium‑sealed Enterprise HDD
Product Type: Internal Hard Disk Drive (Hot‑Plug)
Product Name: Seagate Exos X18 18 TB HDD

KEY FEATURES:
• Storage Capacity: 18 TB
• Interface Type: SAS 12 Gb/s
• Rotational Speed: 7,200 RPM
• Cache (Buffer) Size: 256 MB
• Form Factor: 3.5‑inch (LFF) drive
• Helium sealed‑drive design for lower power & higher capacity

PERFORMANCE:
• Maximum Sustained Transfer Rate: ~270 MB/s (outer diameter)
• Average Latency: ~4.16 ms
• Typical 4K Random Read/Write IOPS (QD16): ~170/550

ENVIRONMENTAL & RELIABILITY:
• Mean Time Between Failures (MTBF): ~2.5 million hours
• Annualized Failure Rate (AFR): ~0.35%
• Warranty: 5‑year limited warranty
• Operating Temperature Range: 5 °C to 60 °C

PHYSICAL:
• Form Factor: 3.5‑inch Large Form Factor (LFF) drive
• Typical Dimensions: 147.0 mm × 101.85 mm × 26.1 mm
• Weight: ~670 g (~1.48 lb)