HUSMM8040ASS205 HGST Hitachi Ultrastar SSD800MM 400GB

HUSMM8040ASS205 Specifications

HGST Ultrastar SSD800MM 400GB 2.5″ SAS 12G MLC Enterprise SSD

Manufacturer: HGST (Hitachi / Western Digital)
Manufacturer Model: HUSMM8040ASS205
Product Line: Ultrastar SSD800MM
Product Series: Enterprise SAS SSD
Product Type: Internal Solid State Drive
Product Name: HGST Ultrastar SSD800MM 400GB 2.5″ SAS 12Gb/s MLC Enterprise SSD

KEY FEATURES:
Storage Capacity: 400GB
Interface Type: Serial Attached SCSI (SAS) 12Gb/s
Form Factor: 2.5-inch Small Form Factor (SFF), 15mm height
Drive Type: Hot-plug
Flash Type: Multi-Level Cell (MLC) NAND
Data Transfer Rate: Up to ~1,150 MB/s (read) and ~700 MB/s (write)
Compatibility: Designed for enterprise servers and storage arrays supporting SAS 12Gb/s
Features Supported: Hot-plug capability, power-loss data management, end-to-end data path protection, error correction (ECC)

PERFORMANCE:
Maximum Data Transfer Rate: Up to ~1,150 MB/s (read)
Random Read IOPS (4K): Up to ~145,000
Random Write IOPS (4K): Up to ~70,000
Sequential Read Speed: Approximately ~1,150 MB/s
Sequential Write Speed: Approximately ~700 MB/s
Latency (Typical): Not explicitly specified

ENDURANCE & RELIABILITY:
Endurance (Lifetime Writes): For 400 GB model up to ~7.3 PB random writes over life
MTBF: 2 million hours
Unrecoverable Bit Error Rate (UBER): <1 in 10¹⁷ bits read
Power Loss Protection: Yes (advanced data-management for power-loss)
Warranty: 5 years limited (typical enterprise warranty)

ENVIRONMENTAL:
Operating Temperature Range: 0°C to 60°C
Storage Temperature Range: -40°C to 85°C
Operating Humidity: 5% – 95% non-condensing
Shock Resistance: 1,000G / 0.5ms
Vibration Resistance (Operating): ~2.16 Grms (5–700 Hz)

PHYSICAL:
Dimensions (W × D × H): 2.5″ SFF (≈70.1 mm × 100.6 mm × 15.0 mm)
Weight: Typical ~164 g
Color: Silver / Black enterprise standard enclosure