Samsung MZQL215THBLA 15.36 TB PM9A3 PCIe 4.0 x4, NVMe 1.4 U.2 (15mm) Enterprise/Read-Intensive Solid State Drive

General

Brand	Samsung
Model	PM9A3
Capacity	15.36 TB
Usage Class	Enterprise/Read-Intensive

Interface

Host Interface	PCIe 4.0 x4, NVMe 1.4
Total Interface Bandwidth	64 Gb/s

Physical Dimension

Form Factor	U.2 (15mm)

Flash & Endurance

NAND Flash	Samsung V6 (128L) TLC
Drive Writes Per Day	1
Total Bytes Written	28032 TBW

Performance

Sequential Read	6900 MB/s
Sequential Write	4100 MB/s
Random Read IOPS	1100000
Random Write IOPS	180000
Average Latency	85 μs

Reliability

Mean Time Between Failures	2 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	Yes

Part Number

MPN	MZQLB15THALA

Engineer's Note

Compared with the previous-generation MZQLB15THALA, the MZQL215THBLA PM9A3 steps up to PCIe 4.0 x4 / NVMe 1.4 and Samsung 128-layer TLC, delivering up to 6.9/4.1 GB/s and 1.1M/180K IOPS for a clear generational gain in throughput and random-read scalability. At 15.36 TB with 1 DWPD and 28,032 TBW, it is a stronger fit for dense virtualization, scale-out storage, and read-intensive database nodes that need higher per-drive performance and capacity in the same mainstream enterprise endurance class.

Endurance & Reliability

With an endurance rating of 28,032 TBW and 1 DWPD, this SSD is designed to handle one full drive write per day over its rated service life, which is more than sufficient for typical enterprise boot, system, caching, and mainstream application workloads. In practical terms, for common system-disk use or read-heavy server deployments, this level of endurance supports many years of stable operation with substantial write headroom. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and metadata during unexpected power interruption, reducing the risk of corruption and improving recovery confidence. Its ultra-low UBER of 1.0E-17, combined with a 2-million-hour MTBF, indicates very strong data integrity and dependable long-term operation in business-critical environments.

Technical Specs & Insights

1. The PCIe 4.0 x4 with NVMe 1.4 architecture provides the bandwidth and command efficiency needed to keep virtualization clusters, analytics nodes, and scale-out storage from being bottlenecked by the drive.
2. Its strong sequential read performance accelerates large-block data movement, reducing load times for databases, AI models, backup images, and media-rich enterprise workloads.
3. The high random read capability is ideal for latency-sensitive applications such as OLTP databases, VDI boot storms, and heavily indexed search platforms where massive small-block access drives user experience.
4. With a balanced write endurance profile backed by Samsung’s mature 128-layer TLC NAND, the drive fits mixed-use enterprise deployments that need dependable daily rewriting without paying a premium for heavier-duty media.
5. The very low typical latency helps deliver faster transaction response, tighter QoS consistency, and smoother performance under concurrency in real-time business applications.

Capacity Sweet

Lower capacity reference: 7.68 TB Higher capacity reference: 30.72 TB Capacity positioning analysis: In this series, 15.36 TB is the practical sweet spot. Compared with 7.68 TB, it gives much better headroom for data growth, denser server builds, and longer refresh cycles without changing the performance profile, since sequential throughput and random IOPS remain broadly in the same enterprise range. Compared with 30.72 TB, it typically delivers a better cost-per-deployment balance, avoiding the premium of the highest capacity tier while still offering substantial usable space. It is well suited for mid-scale virtualization clusters, shared database nodes, or high-density read-heavy application servers.

FAQ