General

Brand	Samsung
Model	850 EVO
Capacity	1TB
Usage Class	Client

Interface

Host Interface	SATA
Total Interface Bandwidth	6 Gb/s

Physical Dimension

Form Factor	2.5

Flash & Endurance

NAND Flash	TLC V-NAND
Drive Writes Per Day	0.14
Total Bytes Written	150 TBW

Performance

Sequential Read	540 MB/s
Sequential Write	520 MB/s
Random Read IOPS	98000
Random Write IOPS	90000
Average Latency	50 μs

Reliability

Mean Time Between Failures	1.5 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	No

Part Number

MPN

Engineer's Note

The Samsung 850 EVO 1TB (MZ7LN1T0) is best suited for read-intensive virtualization boot pools, content delivery edge caches, and high-capacity client or SMB server upgrades that need SATA compatibility with near-interface-limit performance, delivering up to 540/520 MB/s and 98K/90K IOPS. Compared with typical planar TLC SATA SSDs in its class, its TLC V-NAND design provides stronger sustained responsiveness and more dependable 150 TBW endurance at 1TB capacity, making it a more balanced choice for dense, read-dominant deployments.

Endurance & Reliability

With an endurance rating of 150 TBW and 0.14 DWPD, the MZ7LN1T0 is well suited for typical read-focused workloads such as OS boot, office applications, light caching, and general business PCs. In practical terms, a system writing around 40 GB per day would take more than 10 years to reach the rated TBW, giving procurement confidence for long-term use as a standard system drive. Its UBER rating of 1.0E-15 means the drive is designed for a very low probability of unrecoverable bit errors, supporting dependable data integrity in normal enterprise and commercial operation, while the 1.5 million-hour MTBF further reflects strong expected reliability. This model does not include power-loss protection, so it is best deployed in systems with controlled shutdown behavior or upstream power backup where in-flight write protection is not a strict requirement.

Technical Specs & Insights

1. The SATA interface makes this drive a low-risk drop-in choice for broad server and storage-array compatibility, simplifying refresh projects without changing the existing backplane or controller stack.
2. Its sequential read performance helps accelerate OS boot, VM image loading, backup recovery, and large-file access in read-heavy enterprise environments.
3. The strong random read capability is well suited to virtual desktops, web serving, and metadata-intensive databases that must handle many small requests concurrently with stable responsiveness.
4. Its low DWPD rating positions it best for read-centric workloads such as boot drives, content repositories, and reference datasets rather than sustained write-heavy logging or caching tiers.
5. TLC V-NAND provides a cost-efficient balance of capacity and reliability, while the very low typical latency helps reduce application wait time and maintain predictable service quality.

Capacity Sweet

Reference capacities in the same series: Lower capacity: 480GB Higher capacity: 1.92TB In this SSD family, the 1TB MZ7LN1T0 sits at the sweet spot for mainstream enterprise deployment. Compared with the 480GB model, it provides far more usable headroom for OS images, application binaries, logs, and short-term data growth, reducing capacity pressure and refresh frequency. Compared with the 1.92TB option, it usually delivers the best balance between acquisition cost, rack-level density, and already-sufficient enterprise SATA performance. It is especially well suited for a mid-size virtualization host, such as supporting about 35 to 50 mixed-use business VMs with comfortable operating margin.

FAQ