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| Brand | Samsung |
|---|---|
| Model | PM9A3 |
| Capacity | 3.84 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 | 7008 TBW |
| Sequential Read | 6800 MB/s |
|---|---|
| Sequential Write | 4000 MB/s |
| Random Read IOPS | 1000000 |
| Random Write IOPS | 180000 |
| Average Latency | 85 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZQLB3T8HALS |
|---|
The Samsung PM9A3 3.84TB (MZQL23T8HCLS) is a strong upgrade from MZQLB3T8HALS, moving to a PCIe Gen4 x4, NVMe 1.4 platform with Samsung V6 128-layer TLC to deliver up to 6,800/4,000 MB/s and 1,000,000/180,000 IOPS for significantly faster mixed enterprise workloads. With 1 DWPD and 7,008 TBW at this capacity point, it offers a more modern balance of throughput, latency, and endurance for virtualization clusters, read-optimized databases, and scale-out cloud storage than the previous generation.
With an endurance rating of 7,008 TBW and 1 DWPD, the MZQL23T8HCLS is designed to support writing its full usable capacity once per day across the warranty period, making it well suited for steady enterprise workloads such as boot, system, caching, and mixed read/write applications. In practical terms, this level of endurance means that under typical operating conditions, procurement teams can expect long service life with substantial write headroom rather than worrying about premature wear-out. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is unexpectedly interrupted, reducing the risk of corruption and downtime. Its UBER of 1.0E-17, together with a 2 million-hour MTBF, reflects enterprise-class data integrity and dependability, helping ensure very low uncorrectable read error rates in always-on data center environments.
1. The PCIe Gen4 x4 interface with NVMe 1.4 unlocks full modern server bandwidth, helping virtualization, analytics, and scale-out storage platforms move data faster with lower software overhead.
2. Its high sequential read throughput accelerates large-block workloads such as database backup, media streaming, and AI model loading, reducing wait time during bulk data access.
3. The million-class random read capability keeps transaction-heavy applications responsive, making it well suited for OLTP databases, dense VM environments, and metadata-intensive cloud services.
4. A 1 DWPD endurance rating gives enterprises predictable day-after-day write capability, supporting mixed-use workloads without overpaying for higher-endurance media.
5. Built on Samsung V6 128-layer TLC NAND and paired with very low typical latency, the drive delivers a strong balance of capacity efficiency, consistent QoS, and fast response for latency-sensitive enterprise applications.
Lower capacity: 1.92 TB Higher capacity: 7.68 TB In this series, 3.84 TB is the sweet-spot capacity. Compared with 1.92 TB, it provides much better headroom for OS images, application growth, logs, and data buffering, reducing the need for early drive expansion while keeping the same enterprise-class read/write and IOPS profile. Compared with 7.68 TB, it delivers a more balanced cost-per-drive and lower upfront investment, without overcommitting capacity that may sit unused. It is especially well suited for mid-scale virtualization clusters, such as hosting around 40–60 mixed-workload virtual machines per node.
Q: Is MZQL23T8HCLS suitable for a write-heavy database server?
A: It can support moderate write-intensive database workloads, but with 1 DWPD, it is better suited for mixed-use enterprise servers rather than extremely write-heavy environments requiring higher endurance.
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 3.84 TB drive write per day over the warranty period, aligned with its 7008 TBW endurance rating.
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 sudden outages, which is critical for preventing corruption and maintaining storage integrity in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID 1, 10, or 5 may be selected depending on performance and redundancy needs. For database and business-critical workloads, RAID 10 is typically recommended for balanced speed and fault tolerance.