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| Brand | Samsung |
|---|---|
| Model | PM1725b |
| Capacity | 6.4 TB |
| Usage Class | Mixed Use |
| Host Interface | PCIe Gen3 x8 |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | HHHL |
|---|
| NAND Flash | Samsung V-NAND 5th-Gen TLC |
|---|---|
| Drive Writes Per Day | 5 |
| Total Bytes Written | 58400 TBW |
| Sequential Read | 6200 MB/s |
|---|---|
| Sequential Write | 2900 MB/s |
| Random Read IOPS | 1000000 |
| Random Write IOPS | 180000 |
| Average Latency | 95 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-PLK6T40 |
|---|
Compared with the MZ-PLK6T40, the MZ-PLL6T4C (PM1725b) brings a clear generational upgrade with Samsung 5th-Gen V-NAND TLC, combining 6.4 TB of capacity with 5 DWPD / 58,400 TBW for materially stronger write endurance and sustained enterprise duty-cycle support. Its PCIe Gen3 x8 performance profile—up to 6,200/2,900 MB/s sequential and 1,000,000/180,000 IOPS random read/write—makes it the stronger choice for latency-sensitive virtualization, OLTP databases, and mixed read/write cloud workloads than the previous-generation drive.
With an endurance rating of 58,400 TBW and 5 DWPD, the MZ-PLL6T4C is designed for very write-intensive enterprise use, supporting about five full drive writes per day throughout its rated service life. In typical real-world deployments such as boot, system, or mixed read-centric workloads, this level of endurance provides substantial headroom and can comfortably support many years of operation without endurance becoming a practical concern. For reliability, built-in Power Loss Protection (PLP) helps preserve in-flight data and protects metadata integrity if power is interrupted unexpectedly, which is critical for enterprise systems and transactional workloads. Its UBER of 1.0E-17 indicates an exceptionally low unrecoverable bit error rate, while the 2 million hour MTBF further reinforces that this SSD is engineered for dependable, always-on data center operation.
1. The PCIe Gen3 x8 host interface provides wide bandwidth headroom for enterprise servers, preventing the SSD from becoming a bottleneck in dense virtualization and high-ingest database environments.
2. Its sequential read performance accelerates large-file access, reducing boot, restore, backup scan, and analytics dataset loading times across storage-heavy workloads.
3. With class-leading random read capability and consistently low latency, the drive sustains fast response under highly concurrent OLTP, VDI, and metadata-intensive application traffic.
4. The 5 DWPD endurance rating makes it well suited for write-intensive enterprise use cases, supporting years of heavy logging, caching, and transactional update activity with predictable lifespan.
5. Samsung V-NAND 5th-Gen TLC balances enterprise-grade capacity, performance, and reliability, enabling a lower cost per terabyte without sacrificing data-center-class operational stability.
Reference capacities in the same series for MPN MZ-PLL6T4C (6.4 TB): Lower capacity: 3.2 TB Higher capacity: 12.8 TB Capacity positioning analysis: At 6.4 TB, this SSD sits in the sweet spot of the product family. Compared with the 3.2 TB version, it gives much more headroom for data growth, overprovisioning flexibility, and workload consolidation without changing the familiar enterprise performance profile. Compared with the 12.8 TB model, it offers a better balance between acquisition cost, usable capacity, and consistent latency, making procurement easier at scale. It is especially well suited for medium-size virtualization clusters, such as shared storage pools for about 40 to 60 business application VMs.
Q: Is MZ-PLL6T4C suitable for a write-heavy database server?
A: Yes. With 5 DWPD endurance, 58,400 TBW, low 95 µs typical latency, and Samsung 5th-Gen V-NAND TLC, the MZ-PLL6T4C is well suited for write-intensive database and transactional workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: The rated endurance is 5 DWPD, meaning the 6.4 TB drive can handle about 32 TB of writes per day throughout its warranty period, consistent with the 58,400 TBW specification.
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, which is critical for maintaining data integrity, consistency, and reducing corruption risk in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID choice depends on your workload. For balanced performance and redundancy, RAID 10 is commonly recommended for enterprise SSDs like this, especially for databases, virtualization, and other latency-sensitive applications.