861691-B21 HP 1TB 7200RPM SATA 6Gbps Midline Hot Swap 3.5-inch

861691-B21 Specifications

HPE 1 TB 7,200 RPM SATA 3.5-inch Hot-Swap HDD

Manufacturer: HPE
Manufacturer Model: 861691-B21
Product Line: HPE Enterprise SATA HDD – Midline (Business Critical)
Product Series: 3.5-inch LFF SATA 7.2K
Product Type: Internal Hard Disk Drive (Hot-Swap)
Product Name: HPE 1 TB 7.2K SATA HDD

KEY FEATURES:
Storage Capacity: 1 TB
Interface Type: SATA (6.0 Gb/s)
Rotational Speed: 7,200 RPM
Form Factor: 3.5-inch (LFF)
Hot-Swap Support: Yes (SmartCarrier tray)
Cache (Buffer) Size: ~64 MB

PERFORMANCE:
Maximum Data Transfer Rate: ~6.0 Gb/s (SATA interface)
Average Seek Time: ~8.7 ms
Average Latency: ~4.17 ms

ENVIRONMENTAL & RELIABILITY:
Designed for enterprise server/storage environments with hot-swap capability
MTBF: ~1.2 million hours (approximate)
Reliability Rating: Enterprise-class, 24×7 operation

PHYSICAL:
Form Factor: 3.5-inch Large Form Factor (LFF) drive
Typical Dimensions: approx. 146 mm × 101.6 mm × 26 mm
Weight: ~0.80 kg (~1.76 lbs)