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| Brand | Samsung |
|---|---|
| Model | PM1735 |
| Capacity | 6.4 TB |
| Usage Class | Mixed Use |
| Host Interface | PCIe Gen4 x4 |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | U.3 (2.5) |
|---|
| NAND Flash | Samsung V-NAND 5th-Gen TLC |
|---|---|
| Drive Writes Per Day | 3 |
| Total Bytes Written | 35040 TBW |
| Sequential Read | 7000 MB/s |
|---|---|
| Sequential Write | 3800 MB/s |
| Random Read IOPS | 1450000 |
| Random Write IOPS | 260000 |
| 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-WLK6T40 |
|---|
Compared with the previous-generation MZ-WLK6T40, the PM1735 MZ-WLJ6T40 advances to PCIe Gen4 x4 and Samsung 5th-Gen V-NAND TLC, delivering up to 7,000/3,800 MB/s and 1,450,000/260,000 IOPS for a clear uplift in bandwidth and transactional responsiveness. Its 6.4 TB capacity, 3 DWPD endurance, and 35,040 TBW make it a strong fit for high-intensity virtualization, database, and analytics tiers that need both sustained write durability and top-end read performance in the same U.2 footprint.
With an endurance rating of 35,040 TBW and 3 DWPD, the MZ-WLJ6T40 is designed for sustained, write-intensive enterprise workloads over its service life. In practical terms, this level of endurance is far beyond typical system-disk usage and provides strong confidence for long-term, high-duty deployment in servers, storage nodes, and data-centric platforms. For enterprise reliability, the drive includes power loss protection (PLP), which helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and downtime. Its UBER of 1.0E-17 and 2 million-hour MTBF indicate an enterprise-class reliability profile, giving procurement teams added assurance in data integrity and operational stability.
1. The PCIe Gen4 x4 interface, paired with top-tier sequential throughput, enables much faster data streaming for analytics clusters, AI model loading, and backup recovery windows.
2. Its exceptionally strong random read capability sustains heavy VM, database, and metadata workloads with far less queue buildup during peak transaction bursts.
3. A 3 DWPD endurance rating makes it suitable for write-intensive enterprise applications such as OLTP, caching, and log-heavy infrastructure that must handle continuous daily rewrites.
4. Samsung 5th-Gen V-NAND TLC provides a balanced mix of density, efficiency, and reliability, helping data centers scale capacity without sacrificing consistent enterprise performance.
5. The very low typical latency improves application responsiveness and tail-latency behavior, which is critical for real-time services, high-frequency data access, and SLA-sensitive platforms.
Lower reference capacity: 3.2 TB Higher reference capacity: 12.8 TB Within this enterprise SSD family, the 6.4 TB model sits at a practical sweet spot. Compared with the 3.2 TB version, it offers notably more headroom for data growth, overprovisioning flexibility, and longer refresh cycles without changing the expected enterprise-class throughput profile. Compared with the 12.8 TB option, it delivers a more balanced cost-per-drive while keeping similar sequential and random performance characteristics for mainstream workloads. This makes 6.4 TB especially well suited for mid-scale deployments, such as a virtualization cluster supporting about 150 to 250 general-purpose VMs.
Q: Is MZ-WLJ6T40 suitable for a write-heavy database server?
A: Yes. With 3 DWPD endurance, 35,040 TBW, PCIe Gen4 x4 performance, and 95 µs typical latency, the MZ-WLJ6T40 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 3 full drive writes per day. For a 6.4 TB SSD, that equals about 19.2 TB of writes daily across its defined warranty period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes PLP. This is critical because it helps protect in-flight data and metadata during sudden power failure, reducing corruption risk and improving enterprise data integrity.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your goal. RAID 10 is typically preferred for databases needing high performance and redundancy, while RAID 5 or 6 favors capacity efficiency.