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| Brand | Samsung |
|---|---|
| Model | 870 EVO |
| Capacity | 4 TB |
| Usage Class | Client / Consumer |
| Host Interface | SATA 6.0 Gbps |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5" |
|---|
| NAND Flash | Samsung V-NAND 3D TLC |
|---|---|
| Drive Writes Per Day | 0.3 |
| Total Bytes Written | 2400 TBW |
| Sequential Read | 560 MB/s |
|---|---|
| Sequential Write | 530 MB/s |
| Random Read IOPS | 98000 |
| Random Write IOPS | 88000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-77E4T0E |
|---|
Compared with the earlier MZ-77E4T0E revision, the MZ-77E4T0 is the cleaner current-production choice for platform standardization, retaining the 870 EVO’s near-SATA-limit 560/530 MB/s throughput and 98,000/88,000 IOPS while delivering 4 TB capacity with 2400 TBW endurance. Its Samsung V-NAND 3D TLC and 0.3 DWPD profile make it a stronger fit than typical client SATA SSDs for dense boot pools, edge caching, and read-mostly VM storage where per-bay capacity and predictable write life matter.
With an endurance rating of 2400 TBW (0.3 DWPD), the MZ-77E4T0 can sustain about 2.4 petabytes of total writes over its service life, which is more than sufficient for typical OS, application, and general business data workloads. In practical terms, for use as a system or mixed-use boot drive under normal enterprise write levels, this endurance provides long-term, worry-free operation well beyond the write demands most deployments will generate. From a reliability perspective, the specified UBER of 1.0E-15 means the drive is designed for a very low unrecoverable bit error rate, helping maintain data integrity during normal read operations, while the 1.5 million-hour MTBF supports confidence in stable long-term use. This model does not include power loss protection (PLP), so while it is suitable for environments with clean shutdown procedures or protected power infrastructure, applications requiring guaranteed in-flight data protection during sudden outages should use systems with UPS support or consider drives with onboard PLP.
1. The SATA 6.0 Gbps interface, paired with strong sequential read performance, provides a drop-in upgrade path for legacy enterprise servers and storage arrays, accelerating large file access and system boot without requiring a platform redesign.
2. Its high random read capability helps databases, virtual desktop environments, and web application stacks serve far more small-block requests with consistently faster user response times under mixed workloads.
3. The modest write endurance profile is well suited to read-centric enterprise deployments such as content delivery, boot storage, analytics replicas, and reference data sets where capacity efficiency matters more than heavy daily rewrites.
4. Samsung V-NAND 3D TLC combines mature flash density with enterprise-proven reliability, enabling a cost-effective balance of usable capacity, predictable performance, and power efficiency at scale.
5. The low typical latency reduces storage wait time per transaction, helping latency-sensitive applications like OLTP systems and virtualization clusters maintain smoother service levels during peak demand.
Lower capacity reference: 2 TB — MPN MZ-77E2T0 Higher capacity reference: No larger capacity is offered in the same MZ-77E consumer SATA series; 4 TB is the top-end model. Capacity positioning analysis: At 4 TB, the MZ-77E4T0 sits at the sweet spot of the series for buyers who need meaningful capacity headroom without stepping into a different product class. Compared with the 2 TB model, it gives much better room for OS images, application stacks, logs, and data growth, reducing early refresh pressure. Since there is no larger model in the same series, 4 TB also represents the most practical balance of capacity, steady SATA performance, and acquisition cost. It is well suited for a small virtualization cluster hosting around 40 to 60 light-duty virtual machines.
Q: Is MZ-77E4T0 suitable for a write-heavy database server?
A: MZ-77E4T0 is generally not ideal for write-heavy database servers. With 0.3 DWPD, TLC NAND, and no PLP, it is better suited for read-centric or mixed-use workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 0.3 DWPD, meaning about 1.2 TB of writes per day on a 4 TB drive over its warranty period, consistent with the 2400 TBW endurance rating.
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 this SSD, RAID 1 or RAID 10 is typically recommended for better redundancy and stable performance. RAID choice still depends on workload, capacity goals, and fault-tolerance requirements.