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| Brand | Samsung |
|---|---|
| Model | PM9A3 |
| Capacity | 960 GB |
| Usage Class | Enterprise/Read-Intensive |
| Host Interface | PCIe 4.0 x4, NVMe 1.4 |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | EDSFF E1.S (9.5mm) |
|---|
| NAND Flash | Samsung V6 (128L) TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 1752 TBW |
| Sequential Read | 6800 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 580000 |
| Random Write IOPS | 110000 |
| Average Latency | 85 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ1LB960HAJQ |
|---|
Compared with the MZ1LB960HAJQ, the Samsung PM9A3 MZ1L2960HCJR moves to PCIe 4.0 x4 / NVMe 1.4 and delivers up to 6,800/2,000 MB/s and 580K/110K IOPS—roughly doubling sequential read bandwidth while materially improving mixed-read responsiveness in the same 960 GB class. With Samsung V6 128-layer TLC and 1 DWPD / 1,752 TBW endurance, it is the stronger choice for virtualized infrastructure, metadata-heavy storage nodes, and read-centric database tiers that need higher performance per drive than the previous generation.
With an endurance rating of 1,752 TBW, the MZ1L2960HCJR can handle approximately 480 GB of writes per day for 10 years, which is more than enough for typical system disk, boot, logging, and general enterprise application workloads. In practical terms, its 1 DWPD rating means the drive is designed for consistent daily use across a normal enterprise lifecycle without endurance becoming a concern. For enterprise reliability, built-in power loss protection (PLP) helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and improving system recovery confidence. Its UBER of 1.0E-17, together with a 2 million-hour MTBF, reflects a very low probability of unrecoverable read errors and supports the high data integrity expected in server and data center environments.
1. The PCIe 4.0 x4 interface with NVMe 1.4 provides the bandwidth and command efficiency needed to keep modern virtualization clusters and scale-out databases fed without creating a storage bottleneck.
2. Its high sequential read throughput accelerates large-file movement and dataset streaming, helping analytics, backup restore, and AI model loading complete noticeably faster.
3. Strong random read performance enables the drive to sustain heavy small-block access patterns, which is critical for responsive OLTP databases, metadata services, and dense VDI environments.
4. A 1 DWPD endurance rating makes it a practical fit for read-centric enterprise workloads that still require predictable reliability under continuous daily production use.
5. Built on Samsung V6 128-layer TLC NAND, the drive balances enterprise-grade density, power efficiency, and consistent QoS, while its low typical latency helps reduce tail-response time in latency-sensitive applications.
Lower capacity reference: 480 GB Higher capacity reference: 1.92 TB The 960 GB MZ1L2960HCJR sits in the sweet spot of the series. Compared with the 480 GB model, it provides much better headroom for OS images, application growth, logging, and overprovisioning, reducing the risk of early capacity pressure in production. Compared with the 1.92 TB model, it delivers a more attractive balance of acquisition cost, usable space, and enterprise-class performance consistency. This makes it especially suitable for mid-scale deployments, such as a compact virtualization cluster, container platform nodes, or mixed database and application server storage.
Q: Is MZ1L2960HCJR suitable for a write-heavy database server?
A: It can support mixed-use and moderately write-intensive database workloads, but for truly write-heavy database servers, its 1 DWPD TLC endurance may be limiting. Higher-endurance enterprise SSDs are usually preferred.
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 about one full 960GB drive write per day. Its 1752 TBW equals roughly 1,825 full-drive writes over a typical five-year warranty period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP helps preserve in-flight data and metadata during sudden outages, reducing corruption risk and improving reliability in servers, databases, virtualization, and other enterprise environments.
Q: What RAID level is recommended for this SSD?
A: For most enterprise deployments, RAID 10 is the preferred choice because it balances performance, redundancy, and rebuild safety. If capacity efficiency matters more than write performance, RAID 5 or RAID 6 may also be considered.