General

Brand	Micron
Model	RealSSD P420m
Capacity	1.4TB
Usage Class	Enterprise

Interface

Host Interface	PCIe Gen2 x8
Total Interface Bandwidth	32 Gb/s

Physical Dimension

Form Factor	HHHL

Flash & Endurance

NAND Flash	25nm MLC
Drive Writes Per Day
Total Bytes Written	10000 TBW

Performance

Sequential Read	3300 MB/s
Sequential Write	630 MB/s
Random Read IOPS	750000
Random Write IOPS	95000
Average Latency	100 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 P420m 1.4TB (MTFDGAR1T4MAX-1AG1Z) is best suited for read-intensive OLTP databases, real-time analytics, and virtualization clusters that need extremely high transaction concurrency, combining 750,000 random read IOPS with 3.3 GB/s sequential read throughput on a PCIe Gen2 x8 interface. Compared with typical enterprise SATA SSDs in the same era, it delivers dramatically higher queue-depth performance and far greater endurance at 10,000 TBW, making it a stronger choice for latency-sensitive server workloads that must sustain heavy mixed-access patterns over time.

Endurance & Reliability

With an endurance rating of 10,000 TBW, the MTFDGAR1T4MAX-1AG1Z is designed for sustained write-intensive use and provides a very large lifetime write budget for a 1.4TB enterprise SSD. In typical server or OS/application-drive workloads, this level of endurance generally translates into many years of stable operation, making it a dependable choice for long-term deployment. For enterprise reliability, the drive includes power-loss protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is interrupted unexpectedly. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting high data integrity, while the 2 million-hour MTBF further reflects a design focused on continuous, dependable operation.

Technical Specs & Insights

1. The PCIe Gen2 x8 interface gives the drive enough host bandwidth to keep enterprise applications fed, helping reduce storage-side bottlenecks in database, virtualization, and analytics servers.
2. With 3300 MB/s sequential read performance, it accelerates large-block data access so backups, dataset loads, and media or log scans complete noticeably faster.
3. Delivering 750,000K random read IOPS, it is built for highly concurrent workloads where fast small-block access improves VM density, transaction responsiveness, and cache-hit efficiency.
4. Its enterprise DWPD endurance profile, reinforced by 25nm MLC NAND, makes it better suited to sustained write activity and long-term reliability than cost-optimized client flash.
5. A typical latency of 100 µs helps keep application response times tight and predictable, which is especially valuable for latency-sensitive OLTP, metadata, and real-time service workloads.

Capacity Sweet

Lower-capacity reference: 960GB Higher-capacity reference: 1.92TB In this enterprise SSD family, 1.4TB sits at the sweet spot of practical deployment density. Compared with 960GB, it gives noticeably more headroom for OS images, logs, metadata, and short-term workload spikes, reducing early capacity pressure. Compared with 1.92TB, it usually preserves nearly the same enterprise-class throughput and IOPS while delivering a more efficient cost-per-node and better budget control at scale. It is especially well suited for medium-size virtualization clusters, such as hosting boot and utility volumes for around 40 to 60 mixed-application virtual machines.

FAQ