Samsung MZ-WLL1T6C 1.6 TB PM1725b PCIe Gen3 x4 2.5 inch Mixed Use Solid State Drive

General

Brand	Samsung
Model	PM1725b
Capacity	1.6 TB
Usage Class	Mixed Use

Interface

Host Interface	PCIe Gen3 x4
Total Interface Bandwidth	32 Gb/s

Physical Dimension

Form Factor	2.5

Flash & Endurance

NAND Flash	TLC V-NAND
Drive Writes Per Day	3
Total Bytes Written	8760 TBW

Performance

Sequential Read	3500 MB/s
Sequential Write	2000 MB/s
Random Read IOPS	800000
Random Write IOPS	135000
Average Latency	100 μs

Reliability

Mean Time Between Failures	2 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	Yes

Part Number

MPN	MZ-WLK1T60

Engineer's Note

Compared with the previous-generation MZ-WLK1T60, the 1.6 TB PM1725b (MZ-WLL1T6C) delivers a stronger balance of endurance and mixed-workload performance, combining 3 DWPD and 8,760 TBW with up to 3,500/2,000 MB/s sequential throughput and 800,000/135,000 IOPS on a PCIe Gen3 x4 interface. Its TLC V-NAND architecture makes it a particularly strong fit for virtualized databases, high-transaction OLTP, and read-intensive analytics clusters that need enterprise-class longevity without sacrificing latency-sensitive performance.

Endurance & Reliability

With an endurance rating of 8,760 TBW and 3 DWPD, the MZ-WLL1T6C is built for sustained heavy write workloads throughout its service life. In practical terms, this level of endurance is far beyond typical OS and application drive usage, making it a dependable choice for long-term deployment and allowing buyers to expect worry-free operation under normal enterprise workloads for many years. Its enterprise-class reliability is further strengthened by Power Loss Protection (PLP), which helps preserve in-flight data and prevent metadata corruption if power is suddenly interrupted. Combined with an ultra-low UBER of 1.0E-17 and a 2 million hour MTBF, it is designed to deliver highly consistent data integrity and dependable operation in business-critical environments.

Technical Specs & Insights

1. The PCIe Gen3 x4 interface, paired with strong sequential bandwidth, enables fast dataset streaming and significantly reduces backup, restore, and large-file transfer windows in enterprise servers.
2. Its high random-read capability accelerates metadata lookups, index access, and virtual machine boot storms, making it well suited for heavily consolidated cloud and database environments.
3. The enterprise endurance rating supports sustained write-intensive workloads such as logging, caching, and transactional databases without frequent drive replacement concerns.
4. TLC V-NAND provides a strong balance of capacity, performance, and cost efficiency, helping data centers scale storage economically while maintaining enterprise-class reliability.
5. The low typical latency improves application responsiveness and transaction consistency, which is especially valuable for real-time analytics, OLTP systems, and latency-sensitive virtualized workloads.

Capacity Sweet

Lower capacity reference: 800 GB Higher capacity reference: 3.2 TB The 1.6 TB MZ-WLL1T6C sits at the sweet spot of this enterprise SSD family. Compared with the 800 GB option, it offers much better headroom for OS images, logs, hot data, and growth buffers, reducing the risk of early capacity pressure. Compared with the 3.2 TB model, it keeps acquisition cost and per-node spending more controlled while delivering essentially the same enterprise-class throughput and IOPS profile. It is best suited for mid-sized virtualization clusters, such as hosting boot and application data for about 40–60 general-purpose virtual machines.

FAQ