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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 |
|---|
The Samsung 860 EVO 250GB (MZ7LH250HBJQ) is a strong SATA upgrade for client and read-intensive workstation boot drives, combining 550/520 MB/s throughput with 98K/90K IOPS on TLC V-NAND for consistently low-latency everyday performance. Compared with the previous-generation MZ-75E250, it delivers 2x higher endurance at 150 TBW while also improving peak sequential read speed and random write capability, making it the better choice for longer service life under heavier daily write activity.
With an endurance rating of 150 TBW and 0.33 DWPD, this SSD is well suited for typical boot, OS, office, and light application workloads where daily write volumes are moderate. In practical terms, for system-drive use and general business computing, it can reliably support many years of normal operation without endurance becoming a concern. From a reliability perspective, the drive is specified for a 1.5 million hour MTBF and an UBER of 1.0E-15, meaning the expected rate of uncorrectable bit errors is very low and aligned with dependable enterprise-grade data integrity expectations. It does not include power-loss protection, so while it is a solid choice for read-focused or non-transactional environments, applications with frequent write caching or strict protection against sudden power interruption should use appropriate system-level safeguards such as UPS or journaling.
1. The SATA interface ensures broad drop-in compatibility with mainstream servers and storage arrays, making it a practical upgrade path for enterprise systems without NVMe backplane changes.
2. Its near–SATA-limit sequential read performance accelerates boot storms, backup restores, and large file retrieval in read-focused data center workloads.
3. Strong random read capability, paired with very low response time, helps databases, virtual desktops, and metadata-heavy applications serve more transactions with less wait time.
4. The modest write endurance profile is best suited to read-centric enterprise use cases such as content delivery, analytics lookup tiers, and reference data repositories rather than intensive write logging.
5. TLC V-NAND provides a balanced mix of capacity, power efficiency, and cost control, enabling dense enterprise deployments without sacrificing dependable SSD behavior.
Lower-capacity reference: 120GB Higher-capacity reference: 500GB In this SSD family, the 250GB model sits at a practical sweet spot. Compared with the 120GB version, it gives meaningfully more headroom for OS images, logs, metadata, and steady application growth, reducing the risk of early capacity pressure. Compared with the 500GB model, it preserves most of the family’s typical enterprise SATA performance while offering a more efficient acquisition cost per deployed node. This makes 250GB especially well suited for medium-scale virtualization clusters, such as hosting boot and utility volumes for roughly 40 to 60 infrastructure VMs.
Q: Is MZ7LH250HBJQ suitable for a write-heavy database server?
A: Not ideally. With 0.33 DWPD, 150 TBW, TLC V-NAND, and no PLP, this model is better for read-intensive or mixed workloads than sustained write-heavy database server applications.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated for 0.33 drive writes per day, meaning about one-third of its 250GB capacity can be written daily over the warranty period within endurance specifications.
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 in enterprise environments because it helps prevent in-flight data loss and metadata corruption during sudden outages.
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 provide redundancy and better reliability, especially since the drive does not support PLP.