0T00169 WD s842 200GB SAS 2.5" Server SSD

High-Performance 2.5" SAS Enterprise SSD for boot and log-tier acceleration with the 0T00169

The 0T00169 is a WD s842 2.5" SAS hot-swap enterprise SSD designed for servers with SAS backplanes where predictable latency and serviceability are required. As a dedicated boot or OS drive, the 0T00169 keeps system volumes isolated from data tiers while maintaining consistent responsiveness under mixed I/O patterns common in virtualised hosts.

Built on durable MLC NAND, the 0T00169 targets write-intensive cache, journaling, and metadata roles where endurance and sustained small-block performance are decisive. The SAS interface aligns with enterprise RAID controllers and multipath storage designs, while hot-swap operation supports maintenance without scheduled downtime. With up to 84,000 4K read IOPS and 28,500 4K write IOPS, the 0T00169 supports latency-sensitive VM/VDI profiles and database logging, and its sequential throughput of up to 530 MB/s read and 380 MB/s write is well matched to boot storms and log streaming. Endurance is specified at 15,000 TBW and 41.096 DWPD over 5 years, enabling high write duty cycles in compact drive bays.

Why Choose the 0T00169?

The 0T00169 provides a balanced density-to-performance profile for OS and write-path workloads, combining SAS operational compatibility with enterprise reliability characteristics. For scale-out server fleets, the 0T00169 simplifies standardisation across SAS backplanes and supports predictable expansion by reserving higher-capacity tiers for application data while keeping critical boot and log volumes on a consistent, serviceable SSD layer.

WD engineers the s842 series for data centre deployment discipline, focusing on controlled latency, sustained endurance, and qualification for server storage ecosystems. With 2.0M hours MTBF and 9W operating power, the design aligns with enterprise availability targets and thermal planning in dense racks.

Key Applications:

• Server boot and OS volumes on SAS backplanes
• Database write-ahead logging and journaling
• Metadata and caching tiers for storage stacks
• Latency-sensitive VM and VDI environments

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your needs and an extended warranty of up to 6 years, supporting long-term standardisation of 0T00169 deployments across enterprise server fleets.