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| Brand | Samsung |
|---|---|
| Model | SM865 |
| Capacity | 800GB |
| Usage Class | Mixed Use |
| Host Interface | SATA 6Gbps |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | V-NAND TLC |
|---|---|
| Drive Writes Per Day | 3.6 |
| Total Bytes Written | 5256 TBW |
| Sequential Read | 550 MB/s |
|---|---|
| Sequential Write | 510 MB/s |
| Random Read IOPS | 97000 |
| Random Write IOPS | 28000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-7KM8000 |
|---|
Compared with the MZ-7KM8000, the MZ-7KM800A (SM865) delivers a clear generational uplift in enterprise SATA consistency, combining 550/510 MB/s sequential performance with up to 97,000/28,000 IOPS for faster response in OLTP and virtualized workloads. Its V-NAND TLC design, 3.6 DWPD rating, and 5,256 TBW endurance make this 800GB model a stronger fit for write-intensive caching, database logs, and mixed-read/write server deployments where durability is as critical as latency.
With an endurance rating of 5,256 TBW and 3.6 DWPD, the MZ-7KM800A is designed to handle very heavy write activity over its service life, equivalent to writing more than 5.2 petabytes of data before reaching its rated limit. In typical system-drive or mixed enterprise workloads, this provides substantial headroom and means the drive can be used with high confidence for many years, including long-term OS and application storage with write volumes far below its endurance ceiling. For enterprise reliability, built-in power loss protection (PLP) helps preserve in-flight data and protects metadata integrity if power is interrupted unexpectedly, reducing the risk of corruption during sudden shutdowns. Its UBER rating of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting dependable data integrity, while the 2 million hour MTBF further reflects a design focused on stable, continuous operation.
1. The SATA 6Gbps interface enables drop-in deployment across mainstream enterprise backplanes and legacy server platforms, simplifying upgrades without changing storage infrastructure.
2. Its strong sequential read performance helps databases, virtual machine images, and backup restores complete faster, reducing wait time for large-file access in production environments.
3. High random read capability supports dense virtualization and read-heavy transactional workloads by serving far more small-block requests in parallel, which improves application responsiveness at scale.
4. Built with V-NAND TLC and rated for sustained enterprise-grade write endurance, this drive is well suited for mixed-use workloads that require a balance of capacity efficiency, reliability, and predictable lifecycle planning.
5. The very low typical latency helps accelerate boot storms, metadata lookups, and latency-sensitive OLTP operations, delivering more consistent QoS under demanding server workloads.
Lower-capacity reference: 400GB Higher-capacity reference: 1.6TB The 800GB MZ-7KM800A sits in the sweet spot of this series. Compared with the 400GB version, it gives meaningfully more headroom for OS images, application growth, logs, and overprovisioning, reducing the need for early capacity expansion. Compared with the 1.6TB model, it keeps acquisition cost and cost-per-deployment more controlled while delivering essentially the same enterprise-class sequential throughput and random IOPS behavior. In practice, it is a strong fit for medium-scale infrastructure, such as a shared virtualization cluster supporting about 40 to 60 mixed-workload virtual machines.
Q: Is MZ-7KM800A suitable for a write-heavy database server?
A: Yes. With 3.6 DWPD, 5256 TBW endurance, low 100 µs typical latency, and V-NAND TLC, the MZ-7KM800A is well suited for write-intensive database and transactional server workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 3.6 full drive writes per day. For an 800GB SSD, that equals about 2.88TB of writes daily throughout its specified warranty endurance period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP helps preserve in-flight data and metadata during sudden outages, reducing corruption risk and improving reliability for enterprise databases and critical storage systems.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is typically recommended for this SSD in performance-sensitive server environments, as it balances high IOPS, low latency, redundancy, and faster rebuild performance than parity-based RAID levels.