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| Brand | Samsung |
|---|---|
| Model | 850 PRO |
| Capacity | 256GB |
| Usage Class | Client |
| Host Interface | SATA |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | MLC V-NAND |
|---|---|
| Drive Writes Per Day | 0.32 |
| Total Bytes Written | 150 TBW |
| Sequential Read | 550 MB/s |
|---|---|
| Sequential Write | 520 MB/s |
| Random Read IOPS | 100000 |
| Random Write IOPS | 90000 |
| Average Latency | 50 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-7PD256 |
|---|
Compared with MZ-7PD256, the MZ-7KE256BW 850 PRO upgrades to MLC V-NAND and raises rated endurance to 150 TBW (0.32 DWPD), giving it a clear generational advantage for write-heavy client, workstation, and read-cache SATA deployments. It also sustains top-tier SATA performance at 550/520 MB/s and up to 100,000/90,000 IOPS, making it the stronger choice where low-latency random I/O and longer service life matter most.
With an endurance rating of 150 TBW, this 256GB SSD can sustain about 41GB of host writes per day for 10 years, which is well above the write volume of a typical OS, office, or light application drive. In practical terms, for boot-drive and general business workloads, this level of endurance provides long service life with ample margin and should not be a wear concern in normal use. From a reliability standpoint, the 2 million hour MTBF and 1.0E-15 UBER indicate a stable enterprise-grade platform with a very low probability of uncorrectable bit errors during reads, helping protect data integrity in daily operation. This model does not include power-loss protection, so while it is well suited for read-focused and system-drive deployments, it is best used in environments where unexpected power interruption risk is controlled by system-level safeguards such as UPS or proper shutdown management.
1. The SATA interface paired with 550 MB/s sequential read performance enables straightforward drop-in deployment in legacy enterprise servers while still accelerating OS boot, image loading, and bulk data access.
2. With 100,000 random read IOPS, this SSD can sustain highly concurrent OLTP, VDI, and metadata-heavy workloads with noticeably faster response under queue pressure.
3. Its 0.32 DWPD endurance profile is best suited to read-centric enterprise applications such as content delivery, boot volumes, and scale-out analytics where write intensity is moderate.
4. MLC V-NAND provides a stronger balance of endurance, performance consistency, and data retention than commodity client flash, making it a safer fit for always-on business infrastructure.
5. The 50 µs typical latency helps reduce storage wait time per transaction, improving application responsiveness for latency-sensitive database and virtualized environments.
Lower capacity reference: 128GB Higher capacity reference: 512GB In the MZ-7KE series, the 256GB model sits at the practical sweet spot. Compared with the 128GB version, it gives much better headroom for OS images, application stacks, logs, and moderate data growth, reducing early capacity pressure. Compared with the 512GB model, it preserves nearly the same enterprise-class responsiveness while keeping acquisition cost and fleet-wide budget under tighter control. This makes 256GB especially well suited for mid-sized virtualization clusters, such as hosting boot volumes and core application partitions for around 30 to 50 lightweight virtual machines.
Q: Is MZ-7KE256BW suitable for a write-heavy database server?
A: MZ-7KE256BW is generally not ideal for write-heavy database servers. With 0.32 DWPD and 150 TBW, it is better suited for read-intensive or mixed workloads with moderate write activity.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated for 0.32 drive writes per day. For a 256GB model, that equals about 82GB of writes daily on average across the warranty period.
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 enterprise environments because it helps prevent in-flight data loss and metadata corruption during unexpected power failures.
Q: What RAID level is recommended for this SSD?
A: RAID 1 or RAID 10 is typically recommended, depending on capacity and performance needs. These levels improve redundancy and availability, which is especially important since this drive lacks PLP.