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| Brand | Samsung |
|---|---|
| Model | PM1725a |
| Capacity | 6.4 TB |
| Usage Class | Write Intensive |
| Host Interface | PCIe Gen3 x4 |
|---|---|
| Total Interface Bandwidth | 32 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3D TLC |
|---|---|
| Drive Writes Per Day | 5 |
| Total Bytes Written | 58400 TBW |
| Sequential Read | 3300 MB/s |
|---|---|
| Sequential Write | 3000 MB/s |
| Random Read IOPS | 800000 |
| Random Write IOPS | 160000 |
| Average Latency | 90 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZWLW6T4HMIV-00003 |
|---|
Compared with MZWLW6T4HMIV-00003, the Samsung PM1725a (MZ-WLL6T4A) delivers a clear generational upgrade in enterprise readiness by combining 6.4 TB capacity with 5 DWPD endurance and 58,400 TBW, giving architects more headroom for sustained write-heavy duty cycles. Its Samsung V-NAND 3D TLC platform and PCIe Gen3 x4 interface provide up to 3,300/3,000 MB/s and 800K/160K IOPS, making it a strong choice for high-density virtualization, OLTP databases, and mixed-read/write analytics clusters that need both throughput and predictable endurance.
With an endurance rating of 58,400 TBW and 5 DWPD, the MZ-WLL6T4A is designed for sustained heavy write workloads and can reliably support enterprise applications that rewrite the drive’s capacity multiple times per day. In practical terms, for typical OS, boot, database log, virtualization, or mixed server workloads, this level of endurance provides a very large write margin and makes the drive a safe long-term choice for continuous operation over many years. The drive also includes power-loss protection (PLP), which helps preserve in-flight data and protects metadata integrity during unexpected power interruption, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects enterprise-class data integrity and reliability, giving procurement teams confidence in consistent operation in business-critical environments.
1. The PCIe Gen3 x4 host interface gives this drive enough bandwidth to keep virtualization clusters, analytics nodes, and scale-out storage servers from being bottlenecked by the bus.
2. Its strong sequential read capability accelerates large-block workloads such as database backup restores, media streaming, and rapid dataset loading for AI and HPC environments.
3. The high random read performance enables fast response under heavily concurrent access patterns, making it well suited for OLTP databases, VDI boot storms, and metadata-intensive cloud platforms.
4. With enterprise-class write endurance, this SSD can sustain intensive daily overwrite cycles over years of operation, reducing replacement risk in logging, caching, and mixed-workload servers.
5. Samsung V-NAND 3D TLC paired with low typical latency delivers a strong balance of capacity efficiency, predictable QoS, and quick application responsiveness for mainstream enterprise deployments.
Lower reference capacity: 3.2 TB Higher reference capacity: 12.8 TB At 6.4 TB, this SSD sits in the sweet spot of the family. Compared with the 3.2 TB model, it gives much better headroom for VM growth, database expansion, and longer refresh cycles without changing the familiar enterprise-class read/write and random IOPS profile. Compared with 12.8 TB, it typically delivers the best balance of usable capacity, acquisition cost, and per-drive efficiency, while avoiding overprovisioning. It is especially well suited for mid-scale clusters, such as a 3-node virtualization platform hosting around 60 to 90 mixed-application virtual machines.
Q: Is MZ-WLL6T4A suitable for a write-heavy database server?
A: Yes. With 5 DWPD endurance, 58,400 TBW, Samsung V-NAND 3D TLC, and 90 µs typical latency, the MZ-WLL6T4A is well suited for write-intensive database and enterprise workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: It is rated for 5 full drive writes per day. With 6.4 TB capacity, that equals about 32 TB of writes daily throughout its supported warranty endurance period.
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 enterprise storage reliability.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is typically recommended for this SSD in performance-sensitive environments, especially databases. It balances high write performance, low latency, and strong redundancy better than RAID 5 or RAID 6.