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| Brand | Samsung |
|---|---|
| Model | PM9A3 |
| Capacity | 7.68 TB |
| Usage Class | Enterprise / Data Center Read Intensive |
| Host Interface | PCIe Gen4 x4, NVMe 1.4 |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V6 (128-layer) TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 14016 TBW |
| Sequential Read | 6900 MB/s |
|---|---|
| Sequential Write | 4100 MB/s |
| Random Read IOPS | 1100000 |
| Random Write IOPS | 200000 |
| Average Latency | 85 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZQLB7T6HMLA |
|---|
The Samsung PM9A3 7.68TB (MZQL27T6HBLA) stands out as a high-density, read-optimized enterprise NVMe SSD that combines Samsung 128-layer V6 TLC NAND with PCIe Gen4 x4 to deliver up to 6,900/4,100 MB/s and 1.1M/200K IOPS, making it an excellent fit for large-scale virtualization, content delivery, and cloud storage tiers that need strong throughput at 1 DWPD endurance. Compared with the previous-generation MZQLB7T6HMLA, this model brings a clear generational upgrade through its Gen4 interface and newer V-NAND platform, enabling substantially higher bandwidth and transaction performance while sustaining an enterprise-class 14,016 TBW at the same 7.68TB capacity point.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZQL27T6HBLA is built to sustain the equivalent of writing its full capacity once per day throughout its rated service life, making it well suited for steady enterprise workloads. In typical server or system-disk scenarios where daily writes are usually below the maximum endurance envelope, this level of write durability provides long-term operational confidence and supports many years of stable use. For enterprise reliability, the drive includes power-loss protection (PLP), which helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and improving recovery integrity. Its UBER specification of 1.0E-17, together with a 2 million hour MTBF, reflects a very low uncorrectable bit error rate and strong overall dependability expected for business-critical storage environments.
1. The PCIe Gen4 x4 interface with NVMe 1.4 unlocks near-bus-limit bandwidth, helping data-intensive servers move faster through analytics, caching, and virtualization workloads.
2. Its sequential read performance accelerates large-file streaming and dataset loading, reducing wait time for backup recovery, media processing, and AI pipeline initialization.
3. Strong random read capability keeps transaction-heavy applications responsive under deep queue pressure, making it well suited for databases, OLTP systems, and high-concurrency VM environments.
4. A 1 DWPD endurance rating supports full-capacity daily rewrites across the warranty period, giving enterprises predictable lifespan for mixed-use production deployments.
5. Samsung V6 128-layer TLC NAND and low typical latency together deliver a balanced profile of density, efficiency, and fast response, which helps maintain consistent QoS in latency-sensitive cloud infrastructure.
Lower capacity reference: 3.84 TB Higher capacity reference: 15.36 TB At 7.68 TB, this SSD sits in the sweet spot of the family. Compared with the 3.84 TB version, it gives much better headroom for data growth, denser VM placement, and longer refresh cycles without changing the familiar enterprise performance profile. Compared with the 15.36 TB model, it usually delivers the best balance of acquisition cost, usable capacity, and predictable latency under mixed workloads. This makes 7.68 TB especially well suited for mid-scale virtualization clusters, database nodes, and high-density read/write application servers.
Q: Is MZQL27T6HBLA suitable for a write-heavy database server?
A: MZQL27T6HBLA can support database workloads, but with 1 DWPD it is better suited for mixed-use or moderate write-intensive environments rather than extremely write-heavy 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 sustain one full 7.68 TB drive write per day across its warranty period, aligned with 14,016 TBW endurance.
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 data loss and metadata corruption during unexpected power failures or sudden shutdown events.
Q: What RAID level is recommended for this SSD?
A: RAID recommendation depends on workload goals. RAID 1 or RAID 10 is commonly preferred for databases needing redundancy and performance, while RAID 5 or 6 may suit capacity-focused deployments.