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| Brand | Samsung |
|---|---|
| Model | PM9A3 |
| Capacity | 960 GB |
| Usage Class | Enterprise / Data Center Read Intensive |
| Host Interface | PCIe Gen4 x4, NVMe 1.4 |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V6 (128-layer) TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 1752 TBW |
| Sequential Read | 6500 MB/s |
|---|---|
| Sequential Write | 1500 MB/s |
| Random Read IOPS | 580000 |
| Random Write IOPS | 70000 |
| Average Latency | 85 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZQLB960HAJR |
|---|
Compared with the previous-generation MZQLB960HAJR, the Samsung PM9A3 MZQL2960HCJR moves to a PCIe Gen4 x4, NVMe 1.4 platform with 128-layer Samsung V6 TLC NAND, delivering up to 6,500 MB/s sequential read and 580,000 random read IOPS for a clear uplift in front-end throughput and response time. At 960 GB with 1 DWPD and 1,752 TBW, it is a strong fit for read-centric virtualization, scale-out web, and content-serving nodes that need higher Gen4 performance than the prior model without moving into higher-endurance drive classes.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZQL2960HCJR is designed to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical boot, OS, application, and mainstream server workloads. In practical terms, under normal enterprise usage it can serve reliably as a system or mixed-use drive for many years, giving buyers confidence that write wear will not be a limiting factor in standard deployments. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protects metadata integrity during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17, combined with a 2 million hour MTBF, reflects a very low likelihood of uncorrectable bit errors and strong long-term operational stability expected in data center environments.
1. The PCIe Gen4 x4 interface with NVMe 1.4 enables high-bandwidth, low-overhead data movement, helping enterprise servers accelerate large dataset access, VM boot storms, and analytics pipelines.
2. Its strong sequential read capability shortens backup restores, database scans, and AI model loading, improving time-to-service for data-intensive workloads.
3. The high random read performance supports dense virtualization, online transaction processing, and metadata-heavy applications by sustaining fast access under highly concurrent demand.
4. A 1 DWPD endurance profile makes it a solid fit for mixed-read enterprise deployments that need predictable lifespan and lower replacement risk over multi-year operation.
5. Built on Samsung V6 128-layer TLC NAND and paired with low typical latency, it delivers a balanced mix of capacity efficiency, consistent responsiveness, and dependable QoS for business-critical infrastructure.
Lower capacity: 480 GB Higher capacity: 1.92 TB In the MZQL2 series, the 960 GB model sits at a practical sweet spot. Compared with the 480 GB version, it provides much better headroom for OS images, logs, metadata, and workload growth, reducing early capacity pressure. Compared with the 1.92 TB model, it keeps acquisition cost and power budget more controlled while delivering essentially the same enterprise-class sequential throughput and random IOPS profile. This makes 960 GB especially well suited for mid-scale virtualization clusters, such as boot and utility storage for roughly 25 to 40 compute nodes.
Q: Is MZQL2960HCJR suitable for a write-heavy database server?
A: Yes, it can support moderately write-intensive database workloads. With 1 DWPD, 1752 TBW, TLC NAND, and low 85 µs latency, it fits mixed-use servers better than extremely write-heavy applications.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 1 DWPD, meaning it can sustain one full 960 GB drive write per day throughout its warranty period, within the specified endurance and operating conditions.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes PLP. This is critical because it helps protect in-flight data and metadata during sudden power failure, reducing corruption risk and improving reliability in enterprise environments.
Q: What RAID level is recommended for this SSD?
A: RAID choice depends on workload. RAID 1 is recommended for OS or critical data redundancy, while RAID 10 is typically preferred for database servers needing both strong performance and fault tolerance.