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| Brand | Samsung |
|---|---|
| Model | 850 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 | 0.16 |
| Total Bytes Written | 75 TBW |
| Sequential Read | 540 MB/s |
|---|---|
| Sequential Write | 520 MB/s |
| Random Read IOPS | 97000 |
| Random Write IOPS | 88000 |
| 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 | MZ7TE250HCHP |
|---|
Compared with the MZ7TE250HCHP, the Samsung 850 EVO 250GB (MZ7LN250) upgrades to 3D TLC V-NAND, delivering a clear generational gain in endurance and sustained write consistency while still pushing the SATA interface to 540/520 MB/s and 97,000/88,000 IOPS. Its 75 TBW rating and 0.16 DWPD make it a stronger choice than the prior generation for client OS, VDI boot, and mixed read/write desktop workloads where longevity per watt and stable low-latency performance matter.
With an endurance rating of 75 TBW and 0.16 DWPD, the MZ7LN250 is well suited for light to moderate write workloads such as OS boot, office productivity, thin client, and general system-drive use. In practical terms, this level of endurance typically supports many years of normal business operation, making it a dependable choice for read-focused deployments where daily write volumes are relatively low. The specified UBER of 1.0E-15 means the drive is designed for a very low rate of unrecoverable bit errors, helping support data integrity during normal operation, while the 1.5 million-hour MTBF further reflects solid long-term reliability expectations. This model does not include power-loss protection, so while it is a reliable option for standard client and read-centric use cases, applications with frequent sudden power interruptions or in-flight write protection requirements should use appropriate system-level safeguards such as UPS backup or journaling file systems.
1. The SATA interface makes this drive a drop-in upgrade for mainstream enterprise servers and storage arrays, delivering near-bus-limit sequential performance without requiring PCIe platform changes.
2. Its strong random-read capability helps accelerate metadata lookups, virtual desktop responsiveness, and read-heavy database access under highly concurrent workloads.
3. The endurance profile is best suited to read-centric enterprise applications such as boot volumes, content delivery, and analytics datasets where write pressure remains controlled.
4. TLC V-NAND provides a practical balance of capacity, power efficiency, and cost, making it well aligned with scale-out deployments that need predictable flash economics.
5. The low typical latency supports faster application response times and steadier quality of service for transactional systems that are sensitive to storage delays.
Lower capacity reference: 128GB Higher capacity reference: 512GB In the MZ7LN family, 250GB sits at the practical sweet spot. Compared with the 128GB option, it gives much better headroom for OS images, logs, patches, and moderate application growth, reducing the risk of early capacity pressure. Compared with the 512GB model, it delivers nearly the same everyday enterprise SATA performance while keeping acquisition cost and stranded capacity under tighter control. This makes 250GB especially well suited for small to mid-sized virtualization clusters, edge servers, or VDI pools needing balanced, predictable boot and application storage.
Q: Is MZ7LN250 suitable for a write-heavy database server?
A: No. The MZ7LN250 is a 250GB SATA TLC V-NAND SSD rated at 0.16 DWPD and 75 TBW, so it is better suited for read-centric or mixed light-write workloads than write-heavy databases.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: Its endurance rating is 0.16 DWPD, meaning about 0.16 full drive writes per day. For a 250GB SSD, that equals roughly 40GB of writes daily, aligning with its 75 TBW rating.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, this model does not include power loss protection. PLP is critical in server environments because it helps prevent in-flight data loss and metadata corruption during sudden power interruptions.
Q: What RAID level is recommended for this SSD?
A: For business use, RAID 1 or RAID 10 is generally recommended to improve redundancy and availability. RAID 0 is not advised for critical data, especially since this SSD has no PLP.