General

Brand	Micron
Model	9400 MAX
Capacity	25.6TB
Usage Class	Mixed Use

Interface

Host Interface	PCIe Gen4 NVMe
Total Interface Bandwidth	16 Gb/s

Physical Dimension

Form Factor	U.3 15mm

Flash & Endurance

NAND Flash	176-layer 3D TLC
Drive Writes Per Day	3
Total Bytes Written	140160 TBW

Performance

Sequential Read	7000 MB/s
Sequential Write	7000 MB/s
Random Read IOPS	1500000
Random Write IOPS	550000
Average Latency	69 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 9400 MAX 25.6TB (MTFDKCC25T6TGJ-1BC1ZABYY) is purpose-built for high-density OLTP databases, large-scale virtualization clusters, and software-defined storage write tiers that need both very high endurance and predictable low-latency throughput. Compared with typical same-class Gen4 TLC enterprise SSDs, it uniquely combines massive 25.6TB capacity with 3 DWPD endurance (140,160 TBW), symmetric 7000/7000 MB/s performance, and up to 1.5M/550K IOPS to reduce drive count, increase usable rack density, and sustain heavier mixed-workload write pressure.

Endurance & Reliability

With an endurance rating of 140,160 TBW and 3 DWPD, this SSD is built to sustain very heavy write-intensive enterprise workloads over its service life. In practical terms, for typical server, storage, or system-disk use, this level of endurance provides ample headroom for long-term operation with strong confidence in write durability. This drive also includes enterprise-grade power-loss protection, which helps preserve in-flight data and metadata integrity if power is interrupted unexpectedly. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting high data reliability and reducing the risk of unrecoverable read errors in business-critical environments.

Technical Specs & Insights

1. The PCIe Gen4 NVMe interface unlocks host-side bandwidth that keeps modern databases, virtualization clusters, and AI pipelines fed without storage becoming the bottleneck.
2. With sequential read performance reaching 7000 MB/s, this drive shortens large-scale data loading, backup restore, and analytics scan times in throughput-heavy enterprise workloads.
3. Its random read capability of 1,500,000 K IOPS enables extremely high transaction concurrency, helping latency-sensitive applications like OLTP, metadata services, and VDI respond faster under peak demand.
4. Rated for 3 DWPD with 176-layer 3D TLC NAND, it is built to sustain intensive daily write cycles while still delivering the cost efficiency and density enterprises expect at scale.
5. A typical latency of 69 µs supports consistently fast access to small blocks of data, improving tail-response behavior for real-time services and heavily consolidated server environments.

Capacity Sweet

Lower capacity reference: 15.36TB Higher capacity reference: 30.72TB At 25.6TB, this SSD sits in the sweet spot of the family. Compared with the 15.36TB model, it gives substantially more headroom for data growth, consolidation, and longer refresh cycles without materially changing the expected enterprise performance profile. Compared with the 30.72TB option, it typically offers a better balance of acquisition cost, usable capacity, and performance consistency, avoiding overprovisioning for many mainstream deployments. It is especially well suited for mid-scale virtualization or software-defined storage clusters, such as hosting boot and application data for roughly 60 to 80 mixed-workload virtual machines.

FAQ