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| Brand | Samsung |
|---|---|
| Model | SM863 |
| Capacity | 480 GB |
| Usage Class | Mixed Use |
| Host Interface | SATA 6.0 Gbps |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5" |
|---|
| NAND Flash | Samsung V-NAND 2-bit MLC |
|---|---|
| Drive Writes Per Day | 3.6 |
| Total Bytes Written | 3080 TBW |
| Sequential Read | 520 MB/s |
|---|---|
| Sequential Write | 485 MB/s |
| Random Read IOPS | 97000 |
| Random Write IOPS | 26000 |
| Average Latency | 95 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-77E1T0BW |
|---|
Compared with the earlier MZ-77E1T0BW, the Samsung SM863 MZ-7KM4800 moves from a client-oriented design to enterprise Samsung V-NAND 2-bit MLC, delivering far higher write endurance at 3.6 DWPD and 3,080 TBW with more consistent sustained performance under 24/7 workloads. For SATA-based servers and storage arrays, its 520/485 MB/s throughput and up to 97,000/26,000 IOPS make it a stronger fit for read-heavy virtualization, OLTP, and cache tiers where predictable latency and endurance matter more than raw capacity.
With an endurance rating of 3080 TBW and 3.6 DWPD, the MZ-7KM4800 is built to handle sustained write-intensive use far beyond a typical client or OS-boot workload. In practical terms, for use as a system drive or general enterprise boot/application drive, this level of endurance supports many years of reliable operation under normal workloads, giving buyers strong confidence in long-term service life. The drive’s power loss protection (PLP) helps preserve in-flight data and protect metadata integrity if power is suddenly interrupted, which is especially important in server and storage environments. Its enterprise-class UBER of 1.0E-17, together with a 2 million hour MTBF, indicates an extremely low probability of unrecoverable bit errors and is designed to support dependable operation in business-critical deployments.
1. The SATA 6.0 Gbps interface, paired with 520 MB/s sequential read speed, enables a straightforward drop-in upgrade for legacy enterprise platforms while accelerating large-file access, backup restores, and OS boot operations.
2. With 97,000 random read IOPS, this drive can sustain highly concurrent transactional workloads, helping databases and virtualized environments respond faster under heavy user demand.
3. Rated for 3.6 DWPD, it is built for write-intensive enterprise use, giving IT teams the endurance headroom needed for logging, caching, and mixed-workload servers over years of continuous operation.
4. Samsung V-NAND 2-bit MLC provides enterprise-grade flash consistency and stronger write durability than lower-cost consumer NAND, making it better suited for mission-critical applications that prioritize predictable performance.
5. The 95 µs typical latency helps reduce storage wait time at the application layer, improving responsiveness for latency-sensitive workloads such as online transaction processing and real-time data services.
Lower capacity: 240 GB Higher capacity: 960 GB In this series, the 480 GB model sits at the practical sweet spot. Compared with the 240 GB version, it offers noticeably better headroom for OS images, application growth, logs, and overprovisioning flexibility, reducing the risk of early capacity pressure. Compared with the 960 GB model, it preserves nearly the same enterprise-class throughput and IOPS characteristics while keeping acquisition cost and per-node storage budgets under tighter control. This makes 480 GB especially well suited for medium-scale virtualization clusters, such as boot and infrastructure storage for roughly 25 to 40 servers.
Q: Is MZ-7KM4800 suitable for a write-heavy database server?
A: Yes. The MZ-7KM4800 is well suited for write-heavy database workloads, thanks to its 3.6 DWPD endurance, 3080 TBW rating, low 95 µs latency, and enterprise-grade Samsung V-NAND MLC.
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. With 480 GB capacity, that equals about 1.73 TB of writes daily across its supported 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, which is critical for preventing corruption and maintaining storage consistency in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is typically recommended for this SSD in performance-sensitive enterprise environments, especially databases. It provides strong read/write performance, redundancy, and faster rebuild behavior than parity-based RAID levels.