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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-7LH1T9NE |
|---|
Samsung 870 EVO 4TB (MZ-77E4T0B/AM) is a strong choice for SATA-constrained upgrade programs that need near-bus-limit performance—up to 560/530 MB/s and 98K/88K IOPS—while leveraging Samsung V-NAND 3D TLC and a substantial 2400 TBW endurance rating for long service life. Compared with the previous-generation MZ-7LH1T9NE, this model delivers a clear generational step in usable capacity and client SATA efficiency, making it a better fit for high-density workstation boot volumes, content libraries, and mixed read/write prosumer workloads.
With an endurance rating of 2400 TBW, the MZ-77E4T0B/AM can sustain about 1.3 TB of host writes per day over five years, which is far beyond the write volume of typical OS, office, and general business workloads. In practical terms, for use as a system or application drive, this level of endurance supports well over 10 years of normal daily operation with substantial margin. Its UBER specification of 1.0E-15 means the drive is designed for a very low unrecoverable read error rate, helping maintain strong data integrity during normal operation, while the 1.5 million hour MTBF further reflects solid long-term reliability. This model does not include power-loss protection (PLP), so if your environment requires guaranteed protection of in-flight writes during sudden power failure, it should be paired with stable power infrastructure such as a UPS or used in applications where controlled shutdown is standard.
1. The SATA interface enables broad plug-and-play compatibility with existing enterprise servers and storage arrays, making it a cost-efficient upgrade for mixed legacy environments without requiring PCIe infrastructure changes.
2. Its near-saturation sequential read performance accelerates large-file access, helping backup repositories, media archives, and read-heavy datasets complete bulk retrieval tasks faster.
3. Strong random read capability supports high-transaction workloads such as virtual desktop environments, boot storms, and metadata-intensive databases by keeping small-block access highly responsive under concurrency.
4. With an endurance profile suited to light-to-moderate daily write volumes, this drive fits read-centric enterprise use cases like content delivery, reference data stores, and analytics replicas while helping control $/TB.
5. Samsung’s 3D TLC V-NAND, paired with low typical latency, delivers a practical balance of density, reliability, and response consistency for latency-sensitive business applications that need predictable service times at scale.
Reference capacities in the same series for MPN MZ-77E4T0B/AM (4 TB): Lower capacity: 2 TB, MPN MZ-77E2T0B/AM Higher capacity: No higher-capacity model is offered in the same 870 EVO series Capacity positioning analysis: In the 870 EVO family, the 4 TB model sits at the sweet spot for buyers who need meaningful storage headroom without stepping into niche, premium-capacity territory. Compared with the 2 TB version, it provides far more room for VM images, database growth, logs, and snapshots, reducing early capacity pressure and refresh frequency. At the same time, because there is no larger in-series option, 4 TB effectively represents the top practical balance of cost, usable space, and SATA-limited performance. It is well suited for a mid-sized virtualization cluster hosting around 60 to 80 light business workloads.
Q: Is MZ-77E4T0B/AM suitable for a write-heavy database server?
A: MZ-77E4T0B/AM is generally not ideal for write-heavy database servers. With 0.3 DWPD and TLC NAND, it is better suited for read-intensive, mixed-use, or general business workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 0.3 drive writes per day, meaning about 1.2 TB of writes daily on a 4 TB drive over its warranty period, consistent with the 2400 TBW 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 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 provide redundancy and better data protection, which is especially important since this model lacks PLP.