Samsung MZ-77E250B/AM 250 GB 870 EVO SATA 6Gb/s 2.5 inch Client Solid State Drive

General

Brand	Samsung
Model	870 EVO
Capacity	250 GB
Usage Class	Client

Interface

Host Interface	SATA 6Gb/s
Total Interface Bandwidth	6 Gb/s

Physical Dimension

Form Factor	2.5

Flash & Endurance

NAND Flash	Samsung V-NAND 3-bit TLC
Drive Writes Per Day	0.3
Total Bytes Written	150 TBW

Performance

Sequential Read	560 MB/s
Sequential Write	530 MB/s
Random Read IOPS	98000
Random Write IOPS	88000
Average Latency	130 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	MZ-76E250B/AM

Engineer's Note

Compared with the previous-generation MZ-76E250B/AM, the Samsung 870 EVO 250GB pushes SATA performance closer to the interface ceiling with up to 560/530 MB/s sequential read/write and 98,000/88,000 IOPS random read/write, giving client and boot-drive workloads measurably faster responsiveness. Built on Samsung V-NAND 3-bit TLC and rated for 150 TBW at 0.3 DWPD, this MPN delivers a stronger balance of throughput, endurance, and platform compatibility than its predecessor for mainstream desktops, notebooks, and edge systems that still rely on SATA 6Gb/s.

Endurance & Reliability

With an endurance rating of 150 TBW and 0.3 DWPD, this SSD is well suited for typical client and office workloads, where daily writes are usually modest. In practical terms, that equals about 41 GB of writes per day for 10 years, so it can comfortably serve as a reliable OS or application drive over a long service life under normal usage. Its UBER rating of 1.0E-15 means the drive is designed for a very low rate of uncorrectable read errors, supporting dependable day-to-day data access, while the 1.5 million-hour MTBF further reflects solid overall reliability. This model does not include power-loss protection (PLP), so it is best matched to systems with stable power or upstream backup protection rather than write-critical enterprise environments where sudden power interruption safeguards are required.

Technical Specs & Insights

1. The SATA 6Gb/s interface provides broad plug-and-play compatibility with mainstream enterprise servers and storage arrays, making it a low-risk upgrade path for refresh projects and mixed-vendor deployments.
2. Its sequential read performance is well suited for accelerating boot volumes, content distribution, backups, and other read-heavy data streams where fast file access improves overall system responsiveness.
3. Strong random read capability helps databases, virtual desktop environments, and metadata-intensive workloads serve far more small-block requests without becoming a storage bottleneck.
4. A modest endurance profile makes this drive a better fit for read-centric enterprise roles such as OS disks, reference datasets, and edge caching rather than sustained write-heavy transaction workloads.
5. Samsung V-NAND 3-bit TLC combined with low typical latency enables a cost-efficient balance of capacity, power efficiency, and consistently quick access times for latency-sensitive business applications.

Capacity Sweet

Model: Samsung 870 EVO 250GB Lower capacity reference: N/A — 250GB is the entry capacity in the 870 EVO series Higher capacity reference: 500GB Capacity positioning analysis: At 250GB, this model sits at the series sweet spot for entry-to-midscale deployments. Since there is no smaller same-series option, it already avoids the tight space limits and reduced overprovisioning flexibility common in sub-250GB SSD tiers. Compared with the 500GB version, it delivers nearly the same day-to-day SATA performance while keeping acquisition cost lower and capacity planning more disciplined. This makes it a strong fit for compact virtualization clusters, such as hosting boot and utility volumes for around 25 to 40 lightweight application instances or edge nodes.

FAQ