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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 |
|---|
The Samsung PM9D3a MZWL61T9HFLT-00AW7 delivers a clear generational upgrade over MZQL21T9HCJR-00A07 by moving to PCIe Gen5 x4 / NVMe 2.0 and Samsung V8 236-layer TLC, enabling up to 12,000 MB/s sequential read and 2,000,000 random read IOPS in a 1.92 TB, 1-DWPD enterprise profile. For latency-sensitive read-heavy workloads such as AI data staging, high-frequency analytics, and scale-out content serving, it offers distinctly higher front-end throughput while sustaining 3,504 TBW endurance, making it a stronger fit than the prior generation where host interface bandwidth is the bottleneck.
With an endurance rating of 3,504 TBW and 1 DWPD, this SSD is designed to sustain writing its full capacity once per day across a standard enterprise service life, providing strong headroom for read-intensive and mixed workloads. In typical system-boot, application, or general server usage, this level of endurance means the drive can operate with confidence for many years without endurance becoming a practical concern. Its power loss protection (PLP) helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and improving operational safety in enterprise environments. The ultra-low UBER of 1.0E-17, together with a 2.5 million hour MTBF, indicates very high data integrity and dependable long-term reliability, which helps minimize uncorrectable read errors and service disruption.
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 next-generation storage nodes fed without the SSD becoming the bottleneck.
2. Its 12000 MB/s sequential read performance accelerates large-block workloads such as AI model loading, checkpoint restore, analytics scans, and backup recovery, cutting wait time for data-heavy applications.
3. With 2,000,000 K IOPS random read capability, the drive is built for ultra-concurrent enterprise workloads where virtualization, online transaction processing, and metadata-intensive platforms depend on consistently fast small-block access.
4. Rated at 1 DWPD, it is well suited for read-centric enterprise deployments that still require dependable daily rewrite capability over the warranty life, such as content delivery, scale-out storage, and mixed cloud infrastructure.
5. Samsung V8 (236-layer) TLC NAND combined with a typical latency of 65 µs delivers a strong balance of density, power-efficient performance, and fast response time, helping latency-sensitive applications maintain predictable QoS under load.
Lower capacity reference: 960 GB Higher capacity reference: 3.84 TB Capacity positioning analysis: In this product family, the 1.92 TB model sits at the practical sweet spot. Compared with the 960 GB version, it gives much better headroom for OS images, hot data, overprovisioning, and future growth, reducing early capacity pressure in enterprise deployments. Compared with the 3.84 TB option, it delivers a more attractive balance of acquisition cost, usable capacity, and near-equivalent mainstream enterprise performance. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 general-purpose virtual machines.
Q: Is MZWL61T9HFLT-00AW7 suitable for a write-heavy database server?
A: It can support mixed-read/write database workloads, but with 1 DWPD it is better suited to mainstream enterprise databases rather than extremely write-intensive logging or high-churn transactional environments.
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 approximately one full 1.92 TB drive write per day across its warranty period, aligned with 3504 TBW endurance.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes PLP. This is critical in enterprise systems because it helps protect in-flight data and metadata during sudden power failures, reducing corruption risk and improving data integrity.
Q: What RAID level is recommended for this SSD?
A: The best RAID level depends on your priority. RAID 1 or RAID 10 is commonly recommended for databases, delivering strong redundancy, good read/write performance, and faster rebuilds than parity RAID.