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| Brand | Samsung |
|---|---|
| Model | PM9A3 |
| Capacity | 960GB |
| Usage Class | Data Center |
| Host Interface | NVMe |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | M.2 |
|---|
| NAND Flash | TLC V-NAND |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 1752 TBW |
| Sequential Read | 5500 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 80000 |
| Random Write IOPS | 85000 |
| Average Latency | 85 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | PM983 |
|---|
The Samsung PM9A3 960GB (MZ1L2960HCJR-00A07) delivers a strong generational step over the PM983 by moving to NVMe with TLC V-NAND and up to 5,500/2,000 MB/s sequential performance, making it a much better fit for latency-sensitive boot, cache, and mixed read/write server workloads. With 80K/85K random IOPS and 1,752 TBW at 1 DWPD, it also provides higher sustained endurance and more balanced write capability than the PM983 generation for mainstream enterprise deployments.
With an endurance rating of 1,752 TBW and 1 DWPD, the MZ1L2960HCJR-00A07 is designed to handle consistent daily write activity across its warranty life with ample headroom for typical enterprise operating system, boot, and read-intensive application workloads. In practical terms, for common system-disk usage patterns, this level of endurance supports long-term deployment and can comfortably serve as a stable OS or infrastructure drive for many years, including up to around 10 years in lighter real-world write environments. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is interrupted unexpectedly, reducing the risk of corruption and unplanned recovery events. Its UBER specification of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting high data integrity expectations in business-critical systems, while the 2 million hour MTBF further reinforces confidence in dependable operation.
1. The NVMe interface paired with 5500 MB/s sequential read throughput accelerates large dataset access, VM boot storms, and analytics job loading in enterprise servers.
2. With 80,000K random read IOPS, this drive sustains extremely heavy parallel transaction workloads, helping dense virtualization and high-concurrency databases respond faster under peak demand.
3. A 1 DWPD endurance rating makes it well suited for mixed-use enterprise deployments where predictable daily rewrites and stable lifecycle planning matter more than overprovisioned write endurance.
4. TLC V-NAND provides a strong balance of capacity, power efficiency, and cost, making it a practical choice for scaling mainstream data center storage without sacrificing enterprise reliability.
5. The 85 µs typical latency helps reduce storage wait time for latency-sensitive applications, improving QoS consistency in OLTP, metadata-intensive, and real-time service environments.
Lower capacity reference: 480GB Higher capacity reference: 1.92TB In this product family, the 960GB model sits at a practical sweet spot. Compared with the 480GB version, it offers much better headroom for OS images, application binaries, logs, and growth over time, reducing the risk of early capacity pressure. Compared with the 1.92TB option, it keeps acquisition cost and power footprint more controlled while delivering broadly similar enterprise-class throughput and IOPS. This makes 960GB especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 virtual machines.
Q: Is MZ1L2960HCJR-00A07 suitable for a write-heavy database server?
A: It can support moderate database workloads, but for truly write-heavy servers, 1 DWPD may be limiting. We generally recommend higher-endurance models for intensive sustained write environments.
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 960GB drive write per day during its warranty period, consistent with its 1752 TBW endurance rating.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP is critical because it helps preserve in-flight data and metadata during unexpected outages, reducing corruption risk in enterprise workloads.
Q: What RAID level is recommended for this SSD?
A: RAID 1 or RAID 10 is typically recommended for this SSD in business-critical systems, as these levels provide strong data protection and solid performance for mixed enterprise workloads.