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| Brand | Samsung |
|---|---|
| Model | 860 EVO |
| Capacity | 250GB |
| Usage Class | Client |
| Host Interface | SATA |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | TLC V-NAND |
|---|---|
| Drive Writes Per Day | 0.33 |
| Total Bytes Written | 150 TBW |
| Sequential Read | 550 MB/s |
|---|---|
| Sequential Write | 520 MB/s |
| Random Read IOPS | 98000 |
| Random Write IOPS | 90000 |
| Average Latency | 50 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-75E250 |
|---|
Compared with the previous-generation MZ-75E250, the Samsung 860 EVO 250GB (MZ7LH250HAHQ) raises peak SATA performance to 550/520 MB/s and up to 98,000/90,000 IOPS, delivering snappier small-block responsiveness while fully exploiting the SATA interface. Its TLC V-NAND architecture and 150 TBW endurance make it a stronger choice for client boot drives and write-moderate workstation refreshes where predictable latency, proven reliability, and drop-in SATA compatibility matter most.
With an endurance rating of 150 TBW, the MZ7LH250HAHQ is well suited for typical OS, boot, and read-centric business workloads, where daily writes are usually modest. In practical terms, if the drive writes around 40 GB per day, it would take roughly 10 years to reach its rated TBW, making it a comfortable choice for use as a system drive. Its 1.0E-15 UBER means the drive is designed for strong data integrity, with an extremely low probability of an uncorrectable bit error during reads, while the 1.5 million-hour MTBF supports dependable long-term operation. This model does not include power-loss protection, so it is best deployed in systems with stable power, UPS coverage, or application-level safeguards where unexpected power interruption is already controlled.
1. The SATA interface enables straightforward drop-in deployment across legacy enterprise backplanes and mixed server fleets, reducing upgrade friction and infrastructure change costs.
2. Its sustained sequential read performance accelerates boot volumes, software distribution, and large dataset retrieval for content-serving and virtualization environments.
3. Strong random read capability helps databases, VDI, and metadata-heavy workloads respond faster under high concurrency, improving user experience and VM density.
4. The endurance profile is best suited to read-centric enterprise applications such as web hosting, content repositories, and analytics caches, where predictable reliability matters more than heavy daily overwrite rates.
5. TLC V-NAND paired with low typical latency delivers a balanced mix of cost efficiency, stable QoS, and quick access times for scale-out business storage.
Reference capacities in the same series: lower_capacity: 120GB higher_capacity: 500GB Typical enterprise performance across these capacities: Sequential read: up to 550 MB/s Sequential write: up to 520 MB/s Random read: up to 98K IOPS Random write: up to 28K IOPS At 250GB, this SSD sits in the sweet spot of the lineup. Compared with the 120GB option, it gives much better headroom for OS images, logs, patches, and application growth, reducing the risk of early capacity pressure. Compared with the 500GB model, it preserves nearly the same enterprise-class performance while keeping acquisition cost and $/workload more controlled. This makes 250GB a practical choice for small-to-mid virtualization clusters, such as boot and utility storage for around 20 to 30 infrastructure or edge servers.
Q: Is MZ7LH250HAHQ suitable for a write-heavy database server?
A: Not ideally. With 0.33 DWPD and 150 TBW, MZ7LH250HAHQ is better suited for read-intensive or mixed workloads rather than sustained write-heavy database server environments.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 0.33 DWPD, meaning it can support about one-third of a full 250GB drive write per day over its specified warranty period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it does not include PLP. Power loss protection is critical because it helps prevent in-flight data loss and metadata corruption during unexpected power interruptions.
Q: What RAID level is recommended for this SSD?
A: RAID 1 or RAID 10 is generally recommended, depending on capacity and performance needs. These levels improve redundancy and help protect against drive failure in business environments.