KIOXIA's CM9-R 15.36TB E3.S SSD has set new lab records for speed and consistency, outperforming all 1-DWPD competitors and raising the bar for enterprise flash on PCIe Gen5.
KIOXIA's CM9-R 15.36TB E3.S SSD has set a new standard for enterprise flash performance. In a crowded market, this drive posted lab-best sequential read and write speeds, beating every 1-DWPD rival and even exceeding its own official specs.
In testing, the CM9-R reached 15,044 MB/s for sequential reads and 11,300 MB/s for sequential writes, both above the rated numbers. Random 4K write IOPS hit 600,000, well past the 540,000 spec, and peak IOPS reached 3,553,000-second only to the highest ever recorded in the lab. These results put the CM9-R ahead of every other PCIe Gen5 x4 SSD in the enterprise segment.
BiCS 8 technology at the core
The main factor behind this jump is KIOXIA's BiCS 8 NAND. The CM9-R uses this advanced TLC flash and a 16-channel controller to deliver top performance at capacities of 6.4TB and up. In hands-on testing, BiCS 8 consistently outperformed Micron, Hynix, and YMTC, and even edged out Samsung's latest V-NAND in the consumer space.
The E3.S form factor is another advantage. It offers higher density and a modern NVMe interface compared to older U.2 drives, though it requires careful thermal management at just 7.5mm thick. Even under heavy sequential write preconditioning, the CM9-R stayed at 56°C, showing that KIOXIA's design focuses on reliability as well as speed. HPE's current server quickspecs list KIOXIA-branded 15.36TB NVMe Gen5 E3.S SSDs for ProLiant Gen12 systems, confirming that this model is not just a lab sample but a real enterprise option. Multiple KIOXIA E3.S drives at 15.36TB and 30.72TB appear in the HPE product matrix, further confirming its mainstream status. For more technical details, see the HPE QuickSpecs.
KIOXIA's CM9 series is positioned as a PCIe Gen5 enterprise drive family, with OEM and server integration pages confirming its focus on read-intensive and mixed-use deployments rather than consumer use.
HPE Integration Team, Enterprise Storage Documentation
Real-world performance in enterprise workloads
The lab results go beyond synthetic benchmarks. In database-style workloads, the CM9-R reached up to 763,000 IOPS in 8K 7030 tests and led 4K 5050 workloads at every queue depth. It supports RHEL, SLES, CentOS, Ubuntu, Windows Server, and VMware ESXi, making it a straightforward upgrade for most modern data centers.
For organizations where every microsecond and IOPS matter, the CM9-R's consistency and throughput are more than technical stats-they can directly impact business results. The drive's 1-DWPD endurance is aimed at read-intensive environments, but its performance means it won't slow down AI, machine learning, business intelligence, or transactional database workloads.
Comparison with other high-end solutions
The SSD market is full of big claims, but few products deliver across the board. The CM9-R's results are on par with other hardware breakthroughs, like the Endorfy Enduro L6 in the PSU segment, where one product can reset expectations for an entire category.
With performance, quality, and features all at or near the top, the CM9-R stands out. Value isn't rated, but for enterprises pushing PCIe Gen5 flash to its limits, this drive is the new benchmark. KIOXIA's CM9-R 15.36TB E3.S is a strong choice for any data-driven business building next-generation infrastructure.
