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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 | MZQL27T6HBLA-00A07 |
|---|
Compared with the earlier MZQL27T6HBLA-00A07, the MZQL27T6HBLA-00AD3 is the newer PM9A3 revision, combining Samsung V6 128-layer TLC with a PCIe Gen4 x4, NVMe 1.4 interface to deliver higher performance density at up to 6,900/4,100 MB/s and 1.1M/200K IOPS in the same 7.68 TB, 1-DWPD class. Its standout value is bringing enterprise-grade 14,016 TBW endurance together with top-tier Gen4 read throughput, making it a stronger fit than the previous revision for virtualization clusters, scale-out read-heavy databases, and high-concurrency cloud storage nodes.
With an endurance rating of 14,016 TBW, the MZQL27T6HBLA-00AD3 can absorb roughly 14 petabytes of host writes over its usable life, which is a very strong write budget for a 1 DWPD enterprise SSD. In typical real-world use, that means it provides ample margin for long-term 24/7 operation and is especially more than sufficient for OS, boot, and general server workloads where daily write volume is well below the drive’s endurance limit. From a reliability standpoint, built-in Power Loss Protection (PLP) helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and improving service continuity. Its enterprise-class UBER of 1.0E-17 means the probability of an unrecoverable bit error is extremely low, supporting high data integrity for business-critical storage environments.
1. The PCIe Gen4 x4 interface with NVMe 1.4 unlocks host-side bandwidth and queue efficiency that help modern servers feed data-hungry analytics, virtualization, and AI workloads without storage becoming the bottleneck.
2. Its sequential read performance accelerates bulk data streaming, shortening database warm-up, backup restore, and large-model load times in enterprise platforms.
3. The strong random read capability sustains fast response under highly concurrent access patterns, making it well suited for OLTP databases, VDI, and metadata-heavy cloud services.
4. A 1 DWPD endurance profile provides a balanced fit for read-centric to mixed-use deployments, giving enterprises predictable lifespan for always-on production environments without overpaying for unnecessary write headroom.
5. Built on Samsung V6 128-layer TLC and paired with low typical latency, the drive delivers dense, power-efficient capacity with consistently quick access, helping improve rack-level efficiency and application responsiveness at scale.
Reference capacities in the same series: Lower capacity: 3.84 TB Higher capacity: 15.36 TB Capacity positioning analysis: At 7.68 TB, this model sits at the sweet spot of the family. Compared with the 3.84 TB version, it provides meaningfully more headroom for data growth, higher VM density, and longer refresh cycles without changing the expected enterprise-class sequential throughput or random IOPS profile. Compared with the 15.36 TB option, it delivers a better balance of usable capacity, acquisition cost, and fleet-wide standardization. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 60 to 80 mixed-workload virtual machines.
Q: Is MZQL27T6HBLA-00AD3 suitable for a write-heavy database server?
A: Yes, it is suitable for database workloads with steady write activity. With 1 DWPD, 14,016 TBW, low 85 µs latency, and PCIe Gen4 NVMe performance, it fits many enterprise 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 drive write per day across its warranty period. For 7.68 TB capacity, that equals about 7.68 TB daily.
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 metadata during unexpected outages, reducing corruption risk and maintaining storage integrity in enterprise and database environments.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for performance-critical databases, balancing redundancy and write performance. RAID 1 is suitable for smaller deployments, while RAID 5 or 6 may fit more capacity-focused use cases.