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| Brand | Samsung |
|---|---|
| Model | PM9A3 |
| Capacity | 960 GB |
| Usage Class | Read Intensive |
| Host Interface | PCIe Gen4 x4 |
|---|---|
| Total Interface Bandwidth | 16 Gb/s |
| Form Factor | E1.S |
|---|
| NAND Flash | Samsung V-NAND 6th-Gen 128-Layer 3D TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 1752 TBW |
| Sequential Read | 6800 MB/s |
|---|---|
| Sequential Write | 1500 MB/s |
| Random Read IOPS | 620000 |
| 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 | MZ-ILS3T80 |
|---|
Compared with the previous-generation MZ-ILS3T80, the Samsung PM9A3 MZ1L2960HCJR-00B7C upgrades to PCIe Gen4 x4 and 6th-Gen 128-layer V-NAND, delivering up to 6.8 GB/s sequential read throughput and 620K random-read IOPS for a clear generational gain in host bandwidth and read-intensive responsiveness. At 960 GB with 1 DWPD and 1752 TBW, it is a strong fit for virtualized boot/storage tiers, content-serving nodes, and read-centric database workloads that need enterprise endurance without overprovisioning for higher-cost mixed-use SSDs.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZ1L2960HCJR-00B7C is designed to handle sustained daily write activity across its warranty life with ample margin for typical server and storage workloads. In practical terms, for common OS boot, application, logging, and read-intensive enterprise use, this level of endurance is more than sufficient for long-term deployment and should provide worry-free operation under normal write patterns. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and improving system recovery confidence. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting high data integrity, while the 2 million hour MTBF further reflects a design built for dependable data center operation.
1. The PCIe Gen4 x4 host interface, paired with near bus-saturating sequential bandwidth, accelerates large-block data movement such as analytics scans, backup ingest, and VM image loading.
2. Its high random-read capability enables dense virtualization and database platforms to sustain heavy concurrent lookup traffic with fewer performance bottlenecks during peak demand.
3. The 1 DWPD endurance profile is well aligned with read-centric enterprise deployments, giving operators predictable lifespan and lower replacement risk in content delivery, cloud boot, and scale-out storage tiers.
4. Samsung’s 6th-Gen 128-layer 3D TLC V-NAND balances capacity, efficiency, and reliability, making it a strong fit for mainstream data-center workloads that need enterprise-grade flash economics without sacrificing consistency.
5. The ultra-low typical latency helps shorten application response times and reduces tail-delay sensitivity in transactional systems, improving QoS for latency-critical services.
Lower capacity reference: 480 GB Higher capacity reference: 1.92 TB The 960 GB option sits at the sweet spot in this SSD family. Compared with the 480 GB model, it offers much better headroom for OS images, application growth, logs, and overprovisioning, reducing the risk of early capacity pressure in enterprise environments. Compared with the 1.92 TB model, it preserves a more attractive cost profile while delivering essentially the same mainstream enterprise read/write and random IOPS behavior. It is best suited for mid-scale deployments, such as hosting boot and application volumes for about 40 to 60 virtualized business workloads.
Q: Is MZ1L2960HCJR-00B7C suitable for a write-heavy database server?
A: It can support mixed-use or moderate write-intensive database workloads, but for highly write-heavy servers, 1 DWPD may be limiting. We recommend evaluating daily write volume against its endurance budget.
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 960GB drive write per day during its warranty period, aligned with its 1752TB total bytes written rating.
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 mapping tables during unexpected outages, which is critical for data integrity, consistency, and enterprise application reliability.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 1 suits redundancy, RAID 10 balances performance and protection, and RAID 5 or 6 may fit capacity-focused environments with caution.