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| Brand | Samsung |
|---|---|
| Model | PM9D3a |
| Capacity | 1.92TB |
| Usage Class | Enterprise |
| Host Interface | NVMe PCIe Gen5 x4 |
|---|---|
| Total Interface Bandwidth | 128 Gb/s |
| Form Factor | E1.S |
|---|
| NAND Flash | Samsung V-NAND 7th Gen TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 12000 MB/s |
|---|---|
| Sequential Write | 5300 MB/s |
| Random Read IOPS | 2000000 |
| Random Write IOPS | 230000 |
| Average Latency | 75 μs |
| Mean Time Between Failures | 2.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZTLB1T9HCHQ |
|---|
Compared with the previous-generation MZTLB1T9HCHQ, the Samsung PM9D3a MZTL61T9HFJA-00AW7 advances to PCIe Gen5 x4 and 7th Gen V-NAND TLC, delivering up to 12,000 MB/s sequential read and 2,000,000 random read IOPS for a clear uplift in host-side bandwidth and low-latency read performance. At 1.92TB with 1 DWPD and 3,504 TBW, it is a strong fit for read-intensive to mixed enterprise workloads such as scale-out analytics, high-throughput caching, and virtualization tiers that need Gen5-class throughput without moving to a higher-endurance drive.
With an endurance rating of 3,504 TBW and 1 DWPD, the MZTL61T9HFJA-00AW7 is designed to handle writing its full capacity once per day across its rated service life, which is more than sufficient for typical enterprise boot, system, and mixed-read workloads. In practical terms, under common server OS and application-drive usage, this level of endurance provides long-term peace of mind and can comfortably support many years of stable operation without write-life concerns. 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 indicates an extremely low probability of uncorrectable bit errors, and together with a 2.5 million-hour MTBF, it reflects the high data integrity and dependability expected in business-critical environments.
1. The NVMe over PCIe Gen5 x4 architecture provides the bandwidth headroom needed for data-intensive enterprise workloads, helping AI, analytics, and scale-out storage platforms move more data with less host-side bottlenecking.
2. With class-leading sequential read performance, this drive accelerates large-block operations such as database backup, media streaming, checkpoint loading, and rapid dataset ingestion in modern data centers.
3. Its exceptionally high random read capability enables faster response under heavily concurrent access, making it well suited for virtualized environments, high-traffic OLTP databases, and latency-sensitive cloud services.
4. A 1 DWPD endurance profile gives enterprises a balanced mix of lifespan and cost efficiency for mainstream read-centric and mixed-use deployments that require dependable daily write tolerance over the warranty period.
5. Built on Samsung 7th Gen V-NAND TLC and tuned for very low typical latency, the drive delivers predictable QoS and quick transaction turnaround for enterprise applications that depend on both flash density and responsive service times.
Lower reference capacity: 960GB Higher reference capacity: 3.84TB For this enterprise SSD family, 1.92TB is the practical sweet spot. Compared with 960GB, it gives much better headroom for OS growth, logs, hot data, and overprovisioning, reducing early capacity pressure in mixed workloads. Compared with 3.84TB, it usually delivers the best balance of acquisition cost, usable capacity, and enterprise-class performance consistency, since sequential throughput and random IOPS are broadly similar across nearby capacities. In deployment terms, 1.92TB is well suited for a mid-size virtualization cluster, such as shared boot and application storage for about 40 to 60 virtual machines.
Q: Is MZTL61T9HFJA-00AW7 suitable for a write-heavy database server?
A: Yes, it can support database workloads, but with 1 DWPD it is better suited for mixed-use rather than extremely write-intensive databases. For sustained heavy writes, a higher-endurance SSD is 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 it can handle one full 1.92TB drive write per day over its warranty period. Its total endurance is specified at 3504 TBW.
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 an unexpected outage, which is critical for preventing corruption and maintaining storage consistency.
Q: What RAID level is recommended for this SSD?
A: RAID 1 or RAID 10 is generally recommended for enterprise SSD deployments requiring strong redundancy and performance. RAID 5 or 6 may be used when capacity efficiency matters more than write performance.