HUSMM1640ASS200 HGST Ultrastar SSD1600MM 400GB SAS 2.5" SSD

High-Performance 2.5in SAS Enterprise SSD featuring SED security and consistent latency with the HUSMM1640ASS200

The HUSMM1640ASS200 is a 2.5in internal SAS enterprise SSD engineered for data centre platforms that require predictable behaviour in legacy SAS backplanes, SAN arrays, and JBOD shelves. As a drop-in SSD replacement, HUSMM1640ASS200 aligns with controllers and expander topologies where SAS signalling, dual-port paths, and queue-depth stability are operational requirements rather than optional features.

Built on MLC NAND, HUSMM1640ASS200 targets mixed read/write tiers where write endurance and sustained QoS are critical for database logs, metadata services, and virtualised storage pools. Its SAS interface supports enterprise-grade pathing and serviceability while delivering up to 1,100 MB/s read and 765 MB/s write throughput, plus 4K performance up to 130k read and 100k write IOPS for transaction-heavy workloads. For secure deployments, HUSMM1640ASS200 integrates Self-Encrypting Drive (SED) capability with hardware encryption to reduce exposure without adding CPU overhead to the host.

Why Choose the HUSMM1640ASS200?

The HUSMM1640ASS200 provides a balanced density-to-performance profile for environments standardised on SAS infrastructure, enabling higher IOPS per watt and smoother migration from HDD tiers without re-cabling or controller changes. With 7,300 TBW endurance and a 2.0M-hour MTBF, HUSMM1640ASS200 supports long service intervals and predictable fleet behaviour, scaling from single-node boot and log devices to multi-shelf storage tiers that demand consistent latency and secure media handling.

HGST designs Ultrastar-class storage with an emphasis on measurable reliability, controlled firmware behaviour, and integration with established enterprise data centre standards. This approach helps maintain interoperability across SAS ecosystems while supporting operational practices such as hot-swap service, secure decommissioning, and capacity planning.

Key Applications:

• SAS SSD replacement in SAN/JBOD shelves
• Database log and journal volumes
• Mixed read/write enterprise storage tiers
• Secure data environments requiring SED

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your storage refresh or security requirements, and you can extend the warranty up to 6 years to protect long-term enterprise deployments of the HUSMM1640ASS200.