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| Brand | Samsung |
|---|---|
| Model | PM9D3a |
| Capacity | 1.92 TB |
| Usage Class | Enterprise / Data Center Read Intensive |
| Host Interface | PCIe Gen5 x4, NVMe 2.0 |
|---|---|
| Total Interface Bandwidth | 128 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V8 (236-layer) TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 12000 MB/s |
|---|---|
| Sequential Write | 3500 MB/s |
| Random Read IOPS | 2000000 |
| Random Write IOPS | 110000 |
| Average Latency | 65 μs |
| Mean Time Between Failures | 2.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZQL21T9HCJR-00A07 |
|---|
Compared with MZQL21T9HCJR-00A07, the MZWL61T9HFLT-00BW7 PM9D3a advances to PCIe Gen5 x4/NVMe 2.0 and Samsung 236-layer V8 TLC, providing a clear generational uplift in interface bandwidth, NAND density, and platform readiness for next-generation servers. Its 12,000 MB/s sequential read throughput, 2,000,000 random-read IOPS, and 3,504 TBW at 1 DWPD make it a strong fit for read-intensive database, virtualization, and analytics tiers that need very high responsiveness without moving to a higher-endurance drive class.
With an endurance rating of 3,504 TBW and 1 DWPD, the MZWL61T9HFLT-00BW7 is designed to handle a full drive write per day across its rated service life, which is more than sufficient for typical server boot, OS, virtualization, and mixed enterprise workloads. In practical terms, for system-disk or read-heavy application use, this level of endurance provides long-term peace of mind and can comfortably support many years of normal operation without write-life concerns. 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 2.5 million hour MTBF, reflects a very low probability of uncorrectable bit errors and strong overall dependability for business-critical environments.
1. The PCIe Gen5 x4 interface with NVMe 2.0 gives this drive the bandwidth and command efficiency needed to keep GPU servers, high-core-count databases, and real-time analytics pipelines fed without becoming a storage bottleneck.
2. Its ultra-high sequential and random read performance accelerates large dataset streaming while sustaining massive parallel access, making it well suited for AI model serving, virtualization clusters, and read-intensive cloud workloads.
3. The 1 DWPD endurance profile is tuned for enterprise environments that rewrite data consistently every day, providing predictable lifespan for mixed-use infrastructure such as transactional systems, VMs, and scale-out storage.
4. Samsung V8 236-layer TLC NAND combines high density with mature enterprise-grade flash behavior, helping deliver a strong balance of capacity, efficiency, and cost control in data center deployments.
5. A typical latency of 65 µs supports faster application response times and tighter QoS consistency, which is especially valuable for latency-sensitive databases, metadata services, and high-frequency transaction paths.
Lower capacity reference: 960 GB Higher capacity reference: 3.84 TB At 1.92 TB, this SSD sits in the sweet spot of the family. Compared with the 960 GB model, it gives meaningfully better headroom for OS images, application binaries, logs, and short-term data growth without forcing early capacity expansion. Compared with the 3.84 TB option, it usually delivers the best balance of acquisition cost, usable capacity, and enterprise-grade performance consistency, since sequential throughput and random IOPS remain broadly similar across the range. It is especially well suited for mid-scale virtualization clusters, such as boot and workload storage for about 40 to 60 virtual machines.
Q: Is MZWL61T9HFLT-00BW7 suitable for a write-heavy database server?
A: It can support database workloads, but with a 1 DWPD endurance rating, it is better suited for mixed-use or moderate write-intensive environments rather than extremely write-heavy, high-churn database servers.
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 1.92 TB drive write per day across its warranty period, supported by a total endurance of 3504 TBW.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP is critical in enterprise systems because it helps prevent in-flight data loss and reduces metadata corruption during unexpected power interruptions.
Q: What RAID level is recommended for this SSD?
A: The best RAID level depends on your goal. RAID 1 is recommended for strong redundancy, while RAID 10 is typically preferred for database and virtualization workloads requiring performance and protection.