Samsung MZWLJ6T4HALA-00AD7 6.4TB PM1735 PCIe Gen4 x4 2.5-inch Mixed Use Solid State Drive

General

Brand	Samsung
Model	PM1735
Capacity	6.4TB
Usage Class	Mixed Use

Interface

Host Interface	PCIe Gen4 x4
Total Interface Bandwidth	16 Gb/s

Physical Dimension

Form Factor	2.5-inch

Flash & Endurance

NAND Flash	Samsung V-NAND TLC
Drive Writes Per Day	3
Total Bytes Written	35040 TBW

Performance

Sequential Read	7000 MB/s
Sequential Write	3800 MB/s
Random Read IOPS	1450000
Random Write IOPS	250000
Average Latency	90 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-XLN6T40

Engineer's Note

Compared with the previous-generation MZ-XLN6T40, the Samsung PM1735 MZWLJ6T4HALA-00AD7 advances to PCIe Gen4 x4 and delivers up to 7,000/3,800 MB/s sequential performance with 1,450,000/250,000 IOPS, providing a clear generational uplift in bandwidth and transaction throughput. Its 6.4TB capacity, 3 DWPD endurance, 35,040 TBW rating, and Samsung V-NAND TLC make it a strong fit for high-density virtualization clusters, OLTP databases, and latency-sensitive analytics tiers that need both sustained write endurance and top-end read performance.

Endurance & Reliability

With an endurance rating of 35,040 TBW and 3 DWPD, this SSD is designed to handle the equivalent of writing its full capacity three times per day across its rated service life, which is far beyond the demands of typical OS, boot, and mainstream enterprise application workloads. In practical terms, for system-disk or read-heavy server use, it provides a very large endurance margin and can support many years of stable operation without endurance becoming a concern. Its enterprise-grade reliability is further strengthened by Power Loss Protection (PLP), which helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and unplanned downtime. An UBER of 1.0E-17 means the probability of an unrecoverable bit error is extremely low, and together with the 2 million-hour MTBF, it supports the dependable, data-safe performance expected in business-critical environments.

Technical Specs & Insights

1. The PCIe Gen4 x4 interface gives this drive the host bandwidth needed to keep modern virtualization, database, and analytics platforms fed without the storage bus becoming a bottleneck.
2. Its 7000 MB/s sequential read performance accelerates large-block tasks such as data lake scans, backup restores, and AI model loading, cutting wait time for throughput-heavy enterprise workflows.
3. With 1,450,000 K IOPS in random reads, it is well suited for highly concurrent OLTP, metadata-intensive cloud services, and VDI environments where responsiveness under mixed demand is critical.
4. A 3 DWPD endurance rating supports sustained write-heavy operation across its service life, making it a practical fit for enterprise caching tiers, logging, and consistently active transactional workloads.
5. Samsung V-NAND TLC combined with a typical 90 µs latency delivers a strong balance of flash density, predictable QoS, and fast response time for latency-sensitive production applications.

Capacity Sweet

Lower capacity reference: 3.2TB Higher capacity reference: 12.8TB The 6.4TB model sits in the sweet spot of this SSD family. Compared with the 3.2TB version, it gives much more headroom for data growth, workload bursts, and longer refresh cycles without changing the expected enterprise-class read/write and random IOPS profile. Compared with the 12.8TB option, it delivers a more balanced cost-per-drive while avoiding unnecessary overprovisioning in medium-scale deployments. This makes 6.4TB especially suitable for a mid-sized virtualization cluster, such as shared storage for about 40 to 60 mixed-application virtual machines.

FAQ