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| Brand | Samsung |
|---|---|
| Model | 870 EVO |
| Capacity | 250GB |
| Usage Class | Client |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3bit MLC |
|---|---|
| Drive Writes Per Day | 0.3 |
| Total Bytes Written | 150 TBW |
| Sequential Read | 560 MB/s |
|---|---|
| Sequential Write | 530 MB/s |
| Random Read IOPS | 98000 |
| Random Write IOPS | 88000 |
| Average Latency | 35 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-76E250 |
|---|
The Samsung 870 EVO 250GB (MZ-77E250BW) is a strong SATA upgrade point for client and workstation boot drives, combining near-interface-limit 560/530 MB/s sequential performance with 98K/88K IOPS and 150 TBW endurance on Samsung V-NAND 3bit MLC. Compared with the previous-generation MZ-76E250, it delivers a measurable generational uplift in SATA responsiveness and throughput—up to 10 MB/s higher read, 10 MB/s higher write, and slightly improved random read performance—making it the better fit for OS, application, and mixed everyday productivity workloads.
With a rated endurance of 150 TBW and 0.3 DWPD, this SSD is well suited for typical OS, office, and general business workloads where daily writes are relatively light. In practical terms, if used as a system drive writing around 20–30 GB per day, it can comfortably deliver more than 10 years of service before reaching its rated write endurance. The specified UBER of 1.0E-15 means the drive is designed for a very low uncorrectable bit error rate, supporting dependable day-to-day data reads in normal business use, while the 1.5 million-hour MTBF further reflects strong overall hardware reliability. This model does not include power-loss protection (PLP), so it is best positioned for client and non-transaction-critical environments rather than applications requiring write-cache protection during sudden power failure.
1. The SATA interface enables drop-in deployment across widely installed server and storage platforms, making it a cost-efficient upgrade path for virtualized infrastructure and legacy enterprise arrays.
2. Its strong sequential read performance accelerates boot storms, VM image distribution, and large dataset access, helping reduce wait time in read-heavy business workloads.
3. High random read capability paired with ultra-low typical latency improves responsiveness for OLTP databases, VDI environments, and metadata-intensive applications where fast small-block access matters most.
4. The rated endurance is best aligned with read-centric enterprise use cases such as content delivery, analytics serving, and system boot volumes, where predictable performance is needed without heavy daily overwrite pressure.
5. Samsung V-NAND 3bit MLC provides a balanced mix of flash density, power efficiency, and reliability, supporting consistent operation in enterprise systems that prioritize capacity and stable read performance.
Lower capacity in the same MZ-77E series: N/A (250GB is the smallest standard capacity) Higher capacity in the same MZ-77E series: 500GB Performance reference: 250GB: up to 560 MB/s read, 530 MB/s write; up to 98K/88K random read/write IOPS 500GB: up to 560 MB/s read, 530 MB/s write; up to 98K/88K random read/write IOPS In the MZ-77E lineup, 250GB is the practical sweet spot for entry enterprise-style deployments. As the smallest standard capacity in the series, it already provides enough headroom for OS images, logs, swap, and moderate application growth without the tighter space constraints typical of smaller boot media. Compared with the 500GB model, it preserves nearly identical throughput and IOPS while keeping acquisition cost lower. It is best suited for compact clusters, such as hosting boot and utility volumes for around 30 to 40 lightweight virtual desktops or edge nodes.
Q: Is MZ-77E250BW suitable for a write-heavy database server?
A: No. MZ-77E250BW is better suited for client or light-duty workloads. With 0.3 DWPD, 150 TBW, and no PLP, it is not recommended for 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 for 0.3 DWPD, meaning about 30% of its 250GB capacity can be written daily over the warranty period, equivalent to roughly 75GB of writes per day.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, this SSD does not include power loss protection. PLP is critical in servers 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: For general reliability, RAID 1 is commonly recommended for two-drive setups, while RAID 10 is preferable for higher performance and redundancy. Avoid parity-heavy RAID for sustained write-intensive workloads.