400-BEJS Specifications
Dell 12 TB 7,200 RPM SAS 12 Gb/s 3.5-inch Hot-Plug Enterprise HDD
Manufacturer: Dell
Manufacturer Model: 400-BEJS
Product Line: Dell Enterprise Nearline SAS HDD
Product Series: 3.5-inch LFF SAS 12 Gb/s 7.2K
Product Type: Internal Hard Disk Drive (Hot-Plug)
Product Name: Dell 12 TB 7.2K SAS 12 Gb/s 3.5-inch Enterprise HDD
KEY FEATURES:
Storage Capacity: 12 TB
Interface Type: SAS (12 Gb/s)
Rotational Speed: 7,200 RPM
Form Factor: 3.5-inch (LFF)
Hot-Plug Support: Yes
Cache (Buffer) Size: 256 MB
Sector Format: 512e (Advanced Format)
PERFORMANCE:
Maximum Data Transfer Rate: Up to ~243 MB/s (typical)
Average Seek Time: ~8 ms (typical)
Average Latency: ~4.17 ms
ENVIRONMENTAL & RELIABILITY:
Designed for enterprise/nearline server and storage environments with hot-swap capability
Reliability Rating: Enterprise-class, nearline workload optimized
PHYSICAL:
Form Factor: 3.5-inch Large Form Factor (LFF) drive
Typical Dimensions: 146 mm × 101.6 mm × 25.4 mm
Weight: ~0.70 kg (~1.54 lbs)

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