Samsung MZWLL6T4HMLA-00005 6.4TB PM1725b PCIe Gen3 x8 NVMe 2.5 inch Mixed Use / Enterprise Solid State Drive

General

Brand	Samsung
Model	PM1725b
Capacity	6.4TB
Usage Class	Mixed Use / Enterprise

Interface

Host Interface	PCIe Gen3 x8 NVMe
Total Interface Bandwidth	64 Gb/s

Physical Dimension

Form Factor	2.5

Flash & Endurance

NAND Flash	Samsung V-NAND (48-layer) TLC
Drive Writes Per Day	3
Total Bytes Written	35040 TBW

Performance

Sequential Read	3300 MB/s
Sequential Write	3000 MB/s
Random Read IOPS	800000
Random Write IOPS	160000
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	MZWLL6T4HMLA-00002

Engineer's Note

Compared with MZWLL6T4HMLA-00002, the MZWLL6T4HMLA-00005 is the later PM1725b 6.4TB revision, giving datacenter refresh programs a cleaner lifecycle path and qualification continuity while preserving a proven 3 DWPD endurance profile with 35,040 TBW. Its PCIe Gen3 x8 NVMe interface, 3,300/3,000 MB/s sequential throughput, and 800K/160K IOPS make it a stronger fit than older enterprise SATA/SAS or lower-endurance NVMe drives for mixed read/write virtualization, OLTP, and scale-out database nodes.

Endurance & Reliability

With an endurance rating of 35,040 TBW and 3 DWPD, the MZWLL6T4HMLA-00005 is built for sustained enterprise write workloads over its service life. In practical terms, this level of endurance is far beyond typical OS, boot, and general server application demands, making it a very safe choice for long-term deployment under normal data center usage. For reliability, the drive includes power loss protection (PLP), which helps preserve in-flight data and metadata if power is suddenly interrupted, reducing the risk of corruption and unplanned recovery events. Its enterprise-class UBER of 1.0E-17, together with a 2 million hour MTBF, indicates an extremely low rate of uncorrectable bit errors and strong overall operational dependability for business-critical environments.

Technical Specs & Insights

1. The PCIe Gen3 x8 NVMe interface unlocks enough parallel host bandwidth to keep enterprise databases, virtualization clusters, and analytics nodes fed without the bottlenecks common to legacy SAS or SATA storage.
2. Its strong sequential read performance accelerates large-block workloads such as backup recovery, media streaming, and data lake scans, helping shorten batch windows and improve application responsiveness.
3. Very high random read capability makes it well suited for latency-sensitive environments like OLTP databases, VDI boot storms, and heavily consolidated cloud platforms where many small requests arrive at once.
4. A 3 DWPD endurance rating provides the write stamina enterprises need for mixed-use workloads, allowing sustained daily overwrites over the warranty period with lower risk of premature wear-out.
5. Samsung 48-layer V-NAND TLC balances density, power efficiency, and reliability, while the low typical latency helps transactions complete faster and keeps QoS more consistent under demanding production traffic.

Capacity Sweet

Reference capacities in the same series for MZWLL6T4HMLA-00005 (6.4TB): - Lower capacity: 3.2TB - Higher capacity: 12.8TB Capacity Positioning Analysis: At 6.4TB, this model sits at the sweet spot of the product family. Compared with the 3.2TB version, it gives significantly more headroom for data growth, longer refresh cycles, and better workload consolidation without changing the expected enterprise-class performance profile. Compared with the 12.8TB option, it delivers a more efficient balance between acquisition cost, usable capacity, and predictable latency. This makes 6.4TB especially well suited for mid-scale virtualization clusters, mixed OLTP databases, or hyperconverged nodes serving roughly 40 to 60 business applications.

FAQ