General

Brand	Micron
Model	RealSSD P400m
Capacity	100GB
Usage Class	Enterprise

Interface

Host Interface	SATA 6Gb/s
Total Interface Bandwidth	6 Gb/s

Physical Dimension

Form Factor	2.5" 7mm

Flash & Endurance

NAND Flash	25nm MLC
Drive Writes Per Day	10
Total Bytes Written	1750 TBW

Performance

Sequential Read	380 MB/s
Sequential Write	200 MB/s
Random Read IOPS	52000
Random Write IOPS	21000
Average Latency	570 μs

Reliability

Mean Time Between Failures	2 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	Yes

Engineer's Note

The Micron RealSSD P400m 100GB (MTFDDAK100MAN-2S1AA) is purpose-built for write-intensive boot, logging, metadata, and caching tiers in enterprise servers, pairing 10 DWPD endurance with 1,750TBW to deliver far stronger sustained durability than typical read-optimized SATA SSDs in the same capacity class. Its 25nm MLC NAND, 52,000/21,000 random IOPS, and 380/200 MB/s throughput make it a practical choice for latency-sensitive infrastructure where consistent small-block performance and predictable lifecycle matter more than headline capacity.

Endurance & Reliability

With an endurance rating of 1,750 TBW and 10 DWPD, the MTFDDAK100MAN-2S1AA is built for sustained write-intensive use and can comfortably handle typical enterprise system, boot, logging, and cache workloads over its intended service life. In practical terms, for more common mixed or system-disk usage, this level of endurance provides a very large write margin and supports years of stable operation without endurance concerns. This drive also includes power-loss protection (PLP), which helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and improving service continuity. Its unrecoverable bit error rate (UBER) of 1.0E-16 reflects enterprise-class data integrity, meaning read errors are extremely rare, while the 2 million hour MTBF further indicates a design focused on dependable long-term operation.

Technical Specs & Insights

1. The SATA 6Gb/s interface, paired with solid sequential read performance, provides a dependable upgrade path for legacy enterprise platforms, accelerating OS boot, database scans, and bulk file access without requiring PCIe infrastructure changes.
2. Its strong random read capability helps virtualized workloads and transactional databases respond faster under heavy queue depths, improving user experience in read-intensive enterprise environments.
3. The high endurance rating makes it well suited for write-heavy applications such as logging, caching, and OLTP systems, where sustained daily rewrites are critical to long service life.
4. Built with 25nm MLC NAND, the drive balances enterprise-grade durability, data retention, and cost efficiency, making it a practical choice for always-on business storage deployments.
5. The low typical latency supports more predictable application response times, which is especially valuable for latency-sensitive workloads like real-time analytics, metadata access, and high-frequency transaction processing.

Capacity Sweet

Lower capacity reference: 50GB Higher capacity reference: 200GB In this enterprise SSD family, the 100GB model sits in the sweet spot between entry capacity and higher-cost expansion. Compared with the 50GB version, it gives noticeably better space headroom for OS images, logs, patches, and moderate application growth, reducing early capacity pressure. Compared with the 200GB option, it preserves nearly the same enterprise-class sequential and random I/O behavior while keeping acquisition cost and overprovisioning budgets under tighter control. It is especially well suited for small-to-mid-sized virtualization clusters, such as hosting boot volumes for roughly 40 to 60 infrastructure or application VMs.

FAQ