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| Brand | Samsung |
|---|---|
| Model | 870 EVO |
| Capacity | 4 TB |
| Usage Class | Consumer/Client |
| Host Interface | SATA 3.0 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 inch 7mm |
|---|
| NAND Flash | Samsung V6 (128L) 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 | 150 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-76E4T0BW |
|---|
Compared with the MZ-76E4T0BW, the Samsung 870 EVO 4TB (MZ-77E4T0BW) delivers up to 38% better random-read responsiveness while essentially saturating the SATA 6Gb/s bus at 560/530 MB/s, making it a stronger drop-in upgrade for latency-sensitive client and workstation workloads. Its Samsung V6 128-layer TLC NAND, 98,000/88,000 IOPS, and 2400 TBW endurance give it standout value among SATA SSDs for long-life content creation, VM, and mixed-use deployments.
With an endurance rating of 2400 TBW, this 4 TB SSD can sustain about 2.4 petabytes of total writes, which is far beyond the write volume of a typical OS, office, or general business workstation over many years of use. In practical terms, for common system-drive workloads that usually write only a small fraction of that amount, procurement teams can expect long service life with substantial endurance headroom. An UBER of 1.0E-15 means the drive is specified for no more than one unrecoverable read error per 10^15 bits read, supporting dependable data access in normal operation, while the 1.5 million hour MTBF further reflects solid overall hardware reliability. This model does not include power-loss protection, so it is best positioned for client and read-focused business environments where graceful shutdowns, host-side safeguards, or UPS protection are already in place.
1. The SATA interface and near-saturated sequential throughput make this drive a practical drop-in upgrade for existing enterprise servers, speeding up backups, full-disk scans, and system image rollout without changing the storage architecture.
2. Its strong random-read performance helps VDI pools, boot storms, and metadata-heavy applications stay responsive when many users or processes hit the drive at once.
3. The endurance profile is best aligned with read-dominant enterprise workloads such as content delivery, reporting platforms, and warm data tiers, where capacity efficiency matters more than heavy daily rewrites.
4. Samsung’s V6 high-layer TLC NAND provides a solid balance of density, maturity, and power efficiency, making it well suited to cost-optimized datacenter deployments.
5. Low typical latency helps reduce application wait time and tail-response spikes, which is valuable for transactional lookups, web services, and other latency-sensitive business workloads.
Lower-capacity reference: 2 TB — MPN MZ-77E2T0BW Higher-capacity reference: None in the same Samsung 870 EVO series Typical same-series performance: 2 TB: up to 560 MB/s read, 530 MB/s write, up to 98K/88K random read/write IOPS 4 TB: up to 560 MB/s read, 530 MB/s write, up to 98K/88K random read/write IOPS Capacity positioning analysis: The 4 TB model sits at the sweet spot for buyers who need meaningfully more headroom than the 2 TB version without changing the familiar SATA performance profile. It gives far better space flexibility for dense OS, application, log, and warm-data footprints, reducing early capacity pressure and refresh frequency. Since there is no higher-capacity SKU in the same 870 EVO series, 4 TB also represents the practical top-end balance of cost, usable space, and stable performance. It is best suited for mid-sized virtualization clusters, such as hosting boot and utility volumes for roughly 40 to 60 virtual machines.
Q: Is MZ-77E4T0BW suitable for a write-heavy database server?
A: Not ideally. With 0.3 DWPD, TLC NAND, and no power loss protection, MZ-77E4T0BW is better for read-intensive or mixed workloads than sustained write-heavy database server environments.
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 it can handle about 1.2 TB of writes per day on a 4 TB drive during its supported warranty period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it does not include PLP. This matters because sudden power loss can risk in-flight data loss or metadata corruption, which is especially critical in transactional and enterprise storage applications.
Q: What RAID level is recommended for this SSD?
A: RAID 1 or RAID 10 is generally recommended for better redundancy and performance balance. For database or business-critical use, avoid relying on a single drive without data protection.