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| Brand | Samsung |
|---|---|
| Model | PM9A3 |
| Capacity | 960 GB |
| Usage Class | Enterprise/Read-Intensive |
| Host Interface | PCIe 4.0 x4, NVMe |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | 2.5 inch 15mm (U.2) |
|---|
| NAND Flash | Samsung V6 (128L) TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 1752 TBW |
| Sequential Read | 6800 MB/s |
|---|---|
| Sequential Write | 1100 MB/s |
| Random Read IOPS | 570000 |
| Random Write IOPS | 55000 |
| Average Latency | 80 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZQLB960HAJR-00007 |
|---|
The Samsung PM9A3 960GB (MZ-QL29600) delivers standout value for read-centric enterprise deployments by pairing Samsung V6 128-layer TLC with PCIe 4.0 x4 to reach 6,800 MB/s and 570K IOPS, while still providing 1 DWPD and 1,752 TBW for predictable mixed-use endurance. Compared with the previous-generation MZQLB960HAJR-00007, it upgrades the platform to PCIe Gen4 and significantly increases sequential read and random read performance, making it a stronger choice for scale-out virtualization, content delivery, and data-serving nodes where read latency and rack-level throughput matter most.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZ-QL29600 is designed to handle writing the equivalent of its full capacity once per day throughout its rated service life, which is more than sufficient for typical server boot, OS, logging, and general business application workloads. In practical terms, under normal enterprise system-disk usage, this level of endurance supports many years of stable operation with ample write headroom, giving buyers confidence in long-term deployment. For enterprise reliability, the drive includes power loss protection (PLP), which helps preserve in-flight data and protects metadata integrity if power is interrupted unexpectedly. Its UBER of 1.0E-17 indicates an extremely low probability of unrecoverable bit errors during reads, supporting dependable data access, while the 2 million hour MTBF further reflects a design built for continuous business use.
1. The PCIe 4.0 x4 NVMe design, paired with strong sequential read performance, accelerates dataset staging, VM boot storms, and backup recovery in bandwidth-intensive enterprise servers.
2. Its high random read capability helps large virtualized clusters, OLTP databases, and metadata-heavy applications maintain fast response under deep queue pressure.
3. A 1 DWPD endurance profile makes it a solid fit for mainstream enterprise write workloads where predictable daily overwrite tolerance and stable lifecycle cost matter.
4. Samsung V6 128-layer TLC NAND provides a proven balance of density, efficiency, and sustained consistency, making it well suited for scale-out data center storage.
5. Typical latency in the tens of microseconds helps reduce application wait time, improving tail latency for caching tiers, transactional platforms, and real-time service infrastructure.
Lower reference capacity: 480 GB Higher reference capacity: 1.92 TB In this series, the 960 GB model sits at the practical sweet spot for mainstream enterprise deployments. Compared with the 480 GB version, it gives much better capacity headroom for OS images, application growth, logs, and overprovisioning, reducing early storage pressure. Compared with the 1.92 TB version, it usually delivers a more attractive cost-to-capacity balance while keeping broadly similar enterprise-class sequential and random performance. It is especially well suited for small to mid-sized virtualization clusters, such as hosting boot and application volumes for about 40 to 60 general-purpose virtual machines.
Q: Is MZ-QL29600 suitable for a write-heavy database server?
A: MZ-QL29600 can support moderate to heavy database workloads, but for highly write-intensive servers, its 1 DWPD rating may be limiting. It is better suited for mixed workloads with balanced read/write activity.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated at 1 DWPD, meaning it can handle one full drive write per day during its warranty period. For 960 GB capacity, that equals 960 GB of writes daily.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, MZ-QL29600 includes power loss protection. PLP helps preserve in-flight data and metadata during unexpected outages, which is critical for maintaining data integrity and reducing corruption risk in enterprise environments.
Q: What RAID level is recommended for this SSD?
A: RAID 1, 10, or 5 may be used depending on performance and redundancy needs. For database or enterprise workloads, RAID 10 is commonly recommended for stronger performance, protection, and rebuild reliability.