91K8T 9SM260-150 Dell CONSTELLATION 3TB 7.2K 6G 64MB 3.5" SAS Hard Drive W/Caddy

The Dell ST33000650SS HDD is a high-quality 3TB SAS 6Gb/s internal drive designed for use in servers and networking equipment. With a form factor of 3.5 inches, this silver-colored hard drive is specifically designed for reliable storage of large amounts of data. The 512 b/s interface ensures fast data transfer speeds, making it an ideal choice for demanding applications that require quick access to stored information. Built by the trusted brand Dell, this HDD offers a storage capacity of 3TB, providing ample space for storing a wide range of files and documents.

General

Model/Part Number: ST33000650SS (Dell 091K8T)

Brand Family: Seagate Constellation ES / ES.2 (OEM’d to many vendors)

Form Factor: 3.5″ Large Form Factor (LFF) HDD

Interface: SAS 2 (6.0 Gb/s) – dual port enterprise SAS interface

Capacity: 3 TB (≈ 3,000 GB, formatted in 512 B/sector)

⚙️ Performance

Spindle Speed: 7,200 RPM

Interface Bandwidth: up to 6 Gb/s SAS

Sustained Transfer Rate: ~155 MB/s

Cache / Buffer: 64 MB

Average Latency: ~4.16 ms

Random Read Seek Time: ~8.5 ms

Random Write Seek Time: ~9.5 ms

🔌 Interface & Features

SAS Protocol: Serial Attached SCSI enterprise interface with enhanced error correction

Dual-Port Design: Provides redundancy and high availability in server/storage environments

Hot-Swappable: Yes (supports removal/replacement without shutting down the system)

Unrecoverable Read Errors: 1 per 10¹⁵ bits read

📊 Reliability & Environment

MTBF: ~1.2 million hours (high reliability for enterprise use)

Annualized Failure Rate (AFR): ~0.73 %

Operating Temp: 5 °C to 60 °C

Non-Operating Temp: -40 °C to 70 °C

Shock Resistance: Operating shock ~70/40 G (2 ms), non-operating shock ~300 G (2 ms)

📏 Physical

Dimensions (HxLxW): ~26.1 × 147 × 101.6 mm

Weight: ~0.70 kg (~1.54 lb)