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| Brand | Samsung |
|---|---|
| Model | 860 PRO Series |
| Capacity | 4TB |
| Usage Class | Consumer / Client / Professional |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 7mm |
|---|
| NAND Flash | Samsung 64-layer 3D V-NAND MLC |
|---|---|
| Drive Writes Per Day | 0.66 |
| Total Bytes Written | 4800 TBW |
| Sequential Read | 560 MB/s |
|---|---|
| Sequential Write | 530 MB/s |
| Random Read IOPS | 100000 |
| Random Write IOPS | 9000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-76P4T0E |
|---|
Compared with the earlier MZ-76P4T0E, the MZ-76P4T0 refresh reinforces the 860 PRO’s key advantage with Samsung 64-layer 3D V-NAND MLC and 0.66 DWPD / 4,800 TBW at 4TB—an endurance profile that remains stronger than most peer SATA SSDs in this capacity class. For SATA-bound read-heavy to mixed-write workloads such as edge caching, local analytics, and workstation scratch storage, it delivers near-interface-limit 560/530 MB/s performance and up to 100,000 random-read IOPS without sacrificing PRO-class write durability.
With an endurance rating of 4,800 TBW and 0.66 DWPD, the MZ-76P4T0 can sustain writing roughly two-thirds of its full capacity every day across the warranty period, which is more than sufficient for typical OS, application, VDI, and general business workloads. In practical terms, for a 4 TB drive used as a system or mixed-use business drive, this level of endurance supports many years of normal operation without endurance becoming a concern. In reliability terms, the specified UBER of 1.0E-15 means the drive is designed for a very low rate of unrecoverable bit errors, helping maintain dependable data integrity during large-scale reads and routine enterprise usage. This model does not include Power Loss Protection (PLP), so while it remains a solid choice for environments with stable power, proper shutdown procedures, or UPS protection, PLP should be considered if the application involves write-critical workloads where in-flight data must be preserved during sudden power interruption.
1. The SATA 6Gb/s interface, paired with 560 MB/s sequential read performance, enables a straightforward drop-in upgrade for existing enterprise backplanes while keeping boot, backup, and large-file access consistently responsive.
2. With 100,000 random read IOPS, the drive can sustain heavy small-block lookup activity, making it well suited for virtualized workloads, metadata-intensive applications, and read-focused databases.
3. A 0.66 DWPD endurance rating provides enough write budget for mixed-use enterprise deployments that need dependable daily overwrite capability without moving into higher-cost write-optimized tiers.
4. Samsung 64-layer 3D V-NAND MLC offers a strong balance of retention, consistency, and endurance, giving business systems more predictable long-term behavior than lower-end client flash designs.
5. A typical latency of 100 µs helps reduce storage wait time at the application layer, improving transaction responsiveness and helping latency-sensitive services maintain steadier QoS under load.
Reference capacities in the same series for MPN MZ-76P4T0 (4TB): Lower capacity: 2TB Model reference: MZ-76P2T0 Typical performance: up to 560 MB/s read, 530 MB/s write, up to 100K/90K random read/write IOPS Higher capacity: None in this series The 4TB MZ-76P4T0 is the highest-capacity model in the Samsung 860 PRO family, so there is no larger in-series step-up reference. Capacity positioning analysis: The 4TB MZ-76P4T0 sits at the sweet spot of the 860 PRO lineup. Compared with the 2TB model, it gives meaningfully more headroom for OS images, application stacks, hot datasets, and growth buffers, reducing the need for early capacity expansion. Since there is no higher-capacity model in the same series, 4TB also represents the practical ceiling without moving to a different platform or cost tier. It is best suited for mid-scale deployments, such as hosting boot and application volumes for roughly 40 to 60 virtualization nodes or a compact mixed-workload database cluster.
Q: Is MZ-76P4T0 suitable for a write-heavy database server?
A: It can handle moderate to heavy writes with 0.66 DWPD and 4,800 TBW, but without PLP, it is not the best choice for mission-critical write-heavy database servers.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: Its endurance rating is 0.66 DWPD, meaning about 0.66 full 4TB drive writes per day, or roughly 2.64TB of writes daily, within its rated lifespan.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it does not include PLP. This matters because PLP helps prevent in-flight data loss and metadata corruption during unexpected power failure, which is critical in server environments.
Q: What RAID level is recommended for this SSD?
A: For database or business-critical workloads, RAID 10 is generally recommended, as it offers strong read/write performance, redundancy, and faster rebuilds than parity-based RAID configurations.