Samsung MZQL2960HCJR-00AD3 960 GB PM9A3 PCIe Gen4 x4 U.2 Read Intensive Solid State Drive

General

Brand	Samsung
Model	PM9A3
Capacity	960 GB
Usage Class	Read Intensive

Interface

Host Interface	PCIe Gen4 x4
Total Interface Bandwidth	16 Gb/s

Physical Dimension

Form Factor	U.2

Flash & Endurance

NAND Flash	Samsung V-NAND 128-layer 3D TLC
Drive Writes Per Day	1
Total Bytes Written	1752 TBW

Performance

Sequential Read	6800 MB/s
Sequential Write	2400 MB/s
Random Read IOPS	570000
Random Write IOPS	70000
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	MZILS960HEHP0D3

Engineer's Note

Compared with the previous-generation MZILS960HEHP0D3, the Samsung PM9A3 MZQL2960HCJR-00AD3 upgrades to PCIe Gen4 x4 and 128-layer V-NAND, delivering up to 6,800 MB/s sequential read and 570,000 random-read IOPS for a clear step-up in host bandwidth and read-intensive responsiveness in the 960 GB class. With 1 DWPD and 1,752 TBW, this model is a strong fit for virtualized infrastructure, scale-out web tiers, and mixed enterprise read-centric workloads that need higher platform throughput than earlier Samsung datacenter SSD generations without moving to a higher-endurance cost point.

Endurance & Reliability

With an endurance rating of 1,752 TBW and 1 DWPD, the MZQL2960HCJR-00AD3 is designed to handle sustained daily write activity across its warranty period, making it well suited for enterprise boot, system, and read-intensive server workloads. In typical operating-system or infrastructure workloads, this level of endurance is more than sufficient for long-term deployment and can generally support worry-free use as a system drive for many years. Its built-in power loss protection (PLP) helps preserve in-flight data and metadata during unexpected power interruption, reducing the risk of corruption and improving system integrity. Combined with an enterprise-grade UBER of 1.0E-17 and a 2 million-hour MTBF rating, it delivers very strong data reliability and predictable operation for business-critical environments.

Technical Specs & Insights

1. The PCIe Gen4 x4 interface, paired with class-leading sequential read bandwidth, accelerates VM boot storms, large database scans, and AI model loading by reducing storage as a bottleneck.
2. Its strong random-read capability sustains high transaction concurrency, helping virtualized clusters and metadata-heavy applications respond faster under mixed enterprise workloads.
3. A 1 DWPD endurance rating makes it a practical fit for read-centric to mixed-use deployments that need predictable lifespan, lower replacement frequency, and controlled operating cost.
4. Samsung V-NAND 128-layer 3D TLC combines enterprise-capable density, power efficiency, and balanced endurance, enabling higher rack-level capacity without sacrificing mainstream data-center reliability.
5. Typical latency of 85 µs supports faster commit and retrieval paths, improving quality of service for latency-sensitive databases, analytics engines, and cloud infrastructure.

Capacity Sweet

Lower capacity reference: 480 GB Higher capacity reference: 1.92 TB In this series, the 960 GB model sits at the practical sweet spot. Compared with the 480 GB option, it gives noticeably more headroom for OS images, logs, metadata, and workload growth, reducing early capacity pressure. Compared with the 1.92 TB version, it usually delivers a better cost-to-usable-capacity balance while keeping performance in the same enterprise class for sequential throughput and random IOPS. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 general-purpose virtual machines.

FAQ