42D0678 IBM 146GB 15000RPM SAS 6Gbps 16MB Cache Hard Drive

42D0678 Specifications

IBM 2 TB 7,200 RPM SAS 6 Gb/s 3.5-inch Nearline/Hot-Swap HDD

Manufacturer: IBM
Manufacturer Model: 42D0678
Product Line: IBM Enterprise SAS HDD
Product Series: 3.5-inch Large Form Factor (LFF) SAS Nearline, 7.2K RPM
Product Type: Internal Hard Disk Drive (Hot-Swap)
Product Name: IBM 2 TB 7.2K SAS LFF HDD

KEY FEATURES:
Storage Capacity: 2 TB
Interface Type: SAS (6 Gb/s)
Rotational Speed: 7,200 RPM
Form Factor: 3.5-inch (Large Form Factor, LFF)
Hot-Swap Support: Yes — enterprise server/storage compatible
Cache (Buffer) Size: Approx. 16 MB (typical for nearline models of this era)

PERFORMANCE:
Maximum Interface Transfer Rate: 6 Gb/s (SAS)
Average Seek Time: Enterprise-class (approx. 9 ms typical for 7.2K HDDs)
Average Latency: ~4.17 ms (based on 7,200 RPM)
Designed for near-line enterprise workloads (high capacity, moderate performance)

ENVIRONMENTAL & RELIABILITY:
Designed for continuous 24×7 enterprise server/storage operation
Reliability: Enterprise-grade durability and hot-swap capability
Shock, Vibration & MTBF: High-duty enterprise specifications (exact figures not publicly disclosed)

PHYSICAL:
Form Factor: 3.5-inch Large Form Factor (LFF) hot-swap drive
Dimensions: Standard 3.5-inch enterprise drive size (~146 mm × 101.6 mm × 25.4 mm)
Weight: Approx. ~0.8 kg