General

Brand	Micron
Model	9400 MAX
Capacity	12.8TB
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	70080 TBW

Performance

Sequential Read	7000 MB/s
Sequential Write	7000 MB/s
Random Read IOPS	1600000
Random Write IOPS	600000
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 12.8TB (MTFDKCC12T8TGJ-1BC1ZABYY) is purpose-built for write-intensive OLTP databases, high-ingest analytics, and virtualization clusters, combining 3 DWPD endurance, 70,080 TBW, and 7,000/7,000 MB/s symmetric throughput to sustain heavy mixed workloads without sacrificing capacity. Compared with typical same-class PCIe Gen4 enterprise SSDs, it delivers a stronger balance of random-read scale (1.6M IOPS), substantial random-write performance (600K IOPS), and 176-layer TLC durability, making it a better fit where both latency consistency and long-term write resilience matter.

Endurance & Reliability

With an endurance rating of 70,080 TBW and 3 DWPD, this SSD is designed for sustained write-intensive enterprise workloads over its full service life. In practical terms, for typical mixed-use server or system-disk deployments, it provides very large endurance headroom and can operate for many years without endurance being a concern under normal sizing and usage. For enterprise reliability, power-loss protection (PLP) helps preserve in-flight data and mapping tables during an unexpected power interruption, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects a very low probability of uncorrectable bit errors and strong overall dependability for business-critical storage environments.

Technical Specs & Insights

1. The PCIe Gen4 NVMe interface, paired with 7000 MB/s sequential read performance, accelerates large dataset streaming and cuts application startup time in compute- and storage-intensive enterprise servers.
2. With 1,600,000 K IOPS of random read throughput, the drive sustains highly concurrent access patterns that boost responsiveness for virtualization, OLTP databases, and large-scale analytics clusters.
3. A 3 DWPD endurance rating makes it well suited for write-heavy workloads such as logging, caching, and mixed-use transactional platforms that demand consistent performance over the full service life.
4. Built on 176-layer 3D TLC NAND, the SSD balances enterprise-grade capacity, power efficiency, and cost effectiveness while maintaining the reliability expected in mainstream data center deployments.
5. The 69 µs typical latency helps minimize storage wait time, improving tail-latency behavior for latency-sensitive applications like real-time inference, high-frequency transactions, and performance-critical VM environments.

Capacity Sweet

Lower capacity reference: 6.4TB Higher capacity reference: 25.6TB In this SSD family, the 12.8TB model sits at a practical sweet spot. Compared with the 6.4TB version, it gives much more headroom for data growth, overprovisioning flexibility, and denser server configurations without materially changing expected enterprise sequential or random performance behavior. Compared with the 25.6TB option, it typically delivers a better balance of acquisition cost, usable capacity, and fleet-wide efficiency, avoiding unnecessary spend where ultra-high density is not required. It is especially well suited for mid-scale virtualization clusters, such as a 4 to 8 node environment hosting roughly 140 to 220 mixed business VMs.

FAQ