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| Brand | Samsung |
|---|---|
| Model | PM9D3a |
| Capacity | 7.68 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 | 14016 TBW |
| Sequential Read | 12000 MB/s |
|---|---|
| Sequential Write | 6800 MB/s |
| Random Read IOPS | 2000000 |
| Random Write IOPS | 250000 |
| 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 | MZQL27T6HBLA-00A07 |
|---|
The Samsung PM9D3a 7.68TB (MZWL67T6HBLC) is a strong generational upgrade over MZQL27T6HBLA-00A07, moving to PCIe Gen5 x4 and NVMe 2.0 while delivering up to 12,000/6,800 MB/s and 2.0M/250K IOPS for materially faster host response in mixed read-heavy enterprise workloads. Built on Samsung V8 236-layer TLC, it combines 1 DWPD with 14,016 TBW, making it a compelling choice for high-density virtualization, scale-out storage, and AI data-serving tiers that need better bandwidth and queue-depth efficiency than the prior generation.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZWL67T6HBLC is designed to sustain one full drive write per day across its warranty life, which is more than sufficient for typical server boot, OS, logging, and read-intensive enterprise workloads. In practical terms, under normal system-disk or mainstream data-center usage, this level of endurance supports long-term deployment with substantial write headroom and low wear concern. 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 integrity. Its UBER of 1.0E-17 and 2.5 million-hour MTBF indicate a very low uncorrectable bit error rate and strong expected operational reliability, giving procurement teams added confidence for business-critical environments.
1. The PCIe Gen5 x4 interface with NVMe 2.0 provides the bandwidth and command efficiency needed to keep GPU servers, virtualization clusters, and scale-out databases fed without the storage layer becoming the bottleneck.
2. With sequential read performance of 12000 MB/s, this drive sharply reduces dataset staging, backup recovery, and large-model load times in enterprise platforms.
3. Its random read capability of 2,000,000 K IOPS is built for highly concurrent OLTP, metadata-heavy cloud workloads, and AI feature stores where fast access to small blocks directly improves service responsiveness.
4. A 1 DWPD endurance rating makes it a strong fit for mixed-read/write enterprise deployments that need predictable lifespan and lower replacement risk under continuous daily production use.
5. Samsung V8 (236-layer) TLC NAND paired with a typical latency of 65 µs enables consistently fast access while maintaining the density, power efficiency, and cost profile required for mainstream enterprise SSD rollouts.
Lower capacity reference: 3.84 TB Higher capacity reference: 15.36 TB Capacity positioning analysis: In this series, 7.68 TB is the sweet-spot capacity. Compared with the 3.84 TB model, it gives much better headroom for data growth, higher VM density, and longer refresh cycles without changing the familiar enterprise performance profile. Compared with the 15.36 TB model, it delivers a more balanced $/GB, lower upfront spending, and easier capacity planning while keeping similar sequential and random I/O behavior. It is especially well suited for medium-scale virtualization clusters, mixed database workloads, and all-flash storage nodes serving around 40 to 60 business applications.
Q: Is MZWL67T6HBLC suitable for a write-heavy database server?
A: Yes, it can support database workloads well, thanks to 1 DWPD, 14,016 TBW, low 65 µs latency, and PCIe Gen5 performance. For extremely write-intensive environments, higher-endurance models may be preferable.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 1 DWPD, meaning it can sustain one full 7.68 TB drive write per day throughout its warranty period, aligned with its total endurance rating of 14,016 TBW.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes PLP. This is critical because it helps protect in-flight data and mapping tables during sudden power failure, reducing corruption risk and improving reliability in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID 1, 10, or 5/6 can be selected depending on priorities. For databases and business-critical workloads, RAID 10 is commonly recommended for strong performance, redundancy, and faster rebuild behavior.