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) is purpose-built for write-intensive enterprise workloads such as database logging, metadata journaling, and virtualization boot/cache tiers, combining 10 DWPD endurance with 1,750 TBW for long service life under sustained daily writes. Compared with typical same-class SATA SSDs, its 25nm MLC design and balanced 52,000/21,000 random read/write IOPS with 380/200 MB/s throughput make it a stronger fit for latency-sensitive mixed workloads where endurance consistency matters more than peak capacity.

Endurance & Reliability

With an endurance rating of 1,750 TBW and 10 DWPD, the MTFDDAK100MAN is built for sustained write-intensive use and can comfortably handle far more data than a typical OS, application, or read-heavy server drive will generate. In practical terms, under normal system-disk or mixed enterprise workloads, this level of endurance provides long service life with ample write headroom, giving buyers confidence in stable operation over years of deployment. The 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 operational resilience. Its UBER of 1.0E-16 means the rate of unrecoverable bit errors is extremely low, supporting high data integrity expectations in enterprise environments where reliability and consistency are critical.

Technical Specs & Insights

1. The SATA 6Gb/s interface and 380 MB/s sequential read performance make this drive a practical fit for legacy enterprise platforms, accelerating OS boot, image deployment, and large-file retrieval without requiring a server backplane upgrade.
2. With 52,000 random-read IOPS, it can sustain responsive access to heavily fragmented small-block data, helping virtual machines, OLTP databases, and metadata-heavy workloads avoid read-side bottlenecks.
3. A 10 DWPD endurance rating translates into strong suitability for write-intensive enterprise use, allowing the drive to handle frequent logging, caching, and transaction activity with lower replacement risk over its service life.
4. Built on 25nm MLC NAND, the drive prioritizes enterprise-grade balance between performance consistency, write durability, and data retention over lower-cost flash optimized mainly for light-duty workloads.
5. The 570 µs typical latency supports more predictable storage response under load, which is valuable for applications that depend on stable QoS rather than just headline throughput.

Capacity Sweet

For the MTFDDAK100MAN 100GB model, the nearest lower-capacity option in the same family is 50GB, while the next higher-capacity option is 200GB. In series positioning, 100GB is the sweet-spot capacity: it offers materially more headroom than the 50GB version for OS images, logs, swap, and patch growth, while avoiding the higher acquisition cost of the 200GB model when similar sequential throughput and random IOPS are sufficient. This makes it a well-balanced choice for mid-scale infrastructure, such as boot and utility storage for about 40 to 60 compact virtualization hosts or appliance nodes.

FAQ