Samsung MZ3LO15THBLA 15.36 TB PM1743 PCIe Gen5 x4 U.3 (2.5") Read Intensive Solid State Drive

General

Brand	Samsung
Model	PM1743
Capacity	15.36 TB
Usage Class	Read Intensive

Interface

Host Interface	PCIe Gen5 x4
Total Interface Bandwidth	128 Gb/s

Physical Dimension

Form Factor	U.3 (2.5")

Flash & Endurance

NAND Flash	Samsung V-NAND 6th-Gen 128-layer 3D TLC
Drive Writes Per Day	1
Total Bytes Written	28032 TBW

Performance

Sequential Read	14000 MB/s
Sequential Write	7100 MB/s
Random Read IOPS	2500000
Random Write IOPS	250000
Average Latency	80 μs

Reliability

Mean Time Between Failures	2.5 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	Yes

Part Number

MPN	MZWLR15TMHVA

Engineer's Note

MZ3LO15THBLA (PM1743) is a strong upgrade over predecessor MZWLR15TMHVA, moving to PCIe Gen5 x4 and delivering up to 14,000/7,100 MB/s with 2.5M/250K IOPS, which makes it markedly better suited for latency-sensitive database, virtualization, and mixed read-intensive cloud workloads. With 15.36 TB of Samsung 6th-Gen 128-layer V-NAND TLC and 28,032 TBW at 1 DWPD, it also provides a compelling balance of capacity, endurance, and throughput density compared with the prior generation.

Endurance & Reliability

With an endurance rating of 28,032 TBW and 1 DWPD, the MZ3LO15THBLA is built to handle a full drive write per day across its warranty-defined usage profile, making it well suited for demanding enterprise workloads with sustained daily write activity. In practical terms, this level of endurance is more than sufficient for typical server, storage, and system-disk deployments, giving buyers confidence that the drive can support long-term operation under normal business workloads without premature wear concerns. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protects mapping tables during unexpected power interruptions, reducing the risk of corruption or incomplete writes. Its 1.0E-17 UBER and 2.5 million-hour MTBF indicate a very low uncorrectable bit error rate and strong long-term reliability, supporting dependable data integrity in business-critical environments.

Technical Specs & Insights

1. The PCIe Gen5 x4 interface provides next-generation host bandwidth, preventing the SSD from becoming a bottleneck in GPU servers, high-speed caching tiers, and dense virtualization platforms.
2. Its class-leading sequential read performance accelerates large-block data movement, cutting dataset staging, backup restore, and analytic scan times in data-intensive enterprise workloads.
3. The extremely high random read capability enables consistently fast access to massive numbers of small files and records, making it ideal for AI inference, OLTP databases, and hyperscale cloud services.
4. A 1 DWPD endurance rating delivers the write durability enterprises need for always-on mixed workloads while keeping total cost of ownership balanced for mainstream datacenter deployment.
5. Built on Samsung 6th-Gen 128-layer 3D TLC V-NAND with low typical latency, the drive combines mature flash efficiency with fast response times to improve QoS and application responsiveness under sustained load.

Capacity Sweet

For MPN MZ3LO15THBLA (15.36 TB), the closest lower and higher capacities in the same enterprise SSD family are typically: lower_capacity: 7.68 TB higher_capacity: 30.72 TB Capacity positioning analysis: At 15.36 TB, this drive sits in the sweet spot of the series. Compared with the 7.68 TB model, it gives meaningfully more headroom for dataset growth, VM expansion, and longer refresh cycles without changing the expected enterprise-class sequential throughput or random IOPS profile. Compared with the 30.72 TB option, it usually delivers a better balance of acquisition cost, usable capacity, and deployment flexibility. It is especially well suited for mid-scale virtualization clusters, such as hosting system and application storage for roughly 150 to 250 business workloads.

FAQ