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| Brand | Samsung |
|---|---|
| Model | 870 EVO |
| Capacity | 2 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 V-NAND 3-bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 0.3 |
| Total Bytes Written | 1200 TBW |
| Sequential Read | 560 MB/s |
|---|---|
| Sequential Write | 530 MB/s |
| Random Read IOPS | 98000 |
| Random Write IOPS | 88000 |
| Average Latency | 35 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-76E2T0BW |
|---|
The Samsung 870 EVO 2TB (MZ-77E2T0BW) is a near-limit SATA SSD that delivers 560/530 MB/s sequential performance and up to 98,000/88,000 IOPS, making it a strong fit for client boot drives, workstation upgrades, and read-heavy content libraries that need proven 1200 TB endurance. Compared with the previous-generation MZ-76E2T0BW, it improves sequential throughput from 550/520 MB/s to 560/530 MB/s while maintaining the same 1200 TBW durability, giving engineers a cleaner drop-in SATA refresh with better top-end bandwidth and Samsung V-NAND reliability.
With an endurance rating of 1200 TBW and 0.3 DWPD, this 2TB SSD is designed to comfortably handle typical client and light business workloads for many years, including OS, office applications, general data storage, and routine daily writes. In practical terms, under normal system-drive usage, it can serve reliably for up to around 10 years without endurance being a concern, while the 1.5 million-hour MTBF further supports long-term operational confidence. For reliability, the specified UBER of 1.0E-15 indicates a very low uncorrectable bit error rate, meaning the drive is engineered to maintain strong data integrity during normal operation. This model does not include power-loss protection (PLP), so while it is well suited for desktops, notebooks, and non-transactional workloads, systems with frequent sudden power interruption risk or write-critical enterprise applications should use external power safeguards or consider a PLP-equipped drive.
1. The SATA 3.0 interface provides broad compatibility with mainstream enterprise servers and storage arrays, enabling straightforward drop-in upgrades without changing existing backplane infrastructure.
2. Its sustained sequential read performance accelerates large-file access, helping backup restores, media repositories, and analytics datasets move through the pipeline faster.
3. Strong random read capability keeps response times stable under highly concurrent OLTP, VDI, and metadata-heavy virtualization workloads.
4. The 0.3 DWPD endurance profile is well aligned with read-centric enterprise deployments, delivering predictable service life for boot, cache, and content delivery tiers.
5. Samsung V-NAND 3-bit MLC combined with a typical latency of 35 µs enables high-capacity flash storage with consistently fast access, improving application responsiveness in dense data center environments.
Lower-capacity reference: 1 TB (MZ-77E1T0BW) Higher-capacity reference: 4 TB (MZ-77E4T0BW) Typical same-series performance reference: Sequential read/write: up to 560 / 530 MB/s Random read/write: up to 98K / 88K IOPS Capacity positioning analysis: In the 870 EVO family, the 2 TB model sits at the sweet spot for mainstream business deployment. Compared with the 1 TB version, it gives much better space headroom for OS images, application stacks, logs, and steady data growth, reducing the need for early capacity expansion. Compared with the 4 TB option, it keeps acquisition cost and per-node storage allocation more balanced while delivering essentially the same everyday performance. It is especially well suited for mid-sized virtualization clusters, such as hosting boot and application volumes for around 40 to 60 office workloads or mixed business service instances.
Q: Is MZ-77E2T0BW suitable for a write-heavy database server?
A: Not ideally. With 0.3 DWPD, TLC V-NAND, and no PLP, MZ-77E2T0BW 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: It is rated for 0.3 DWPD, meaning about 0.6 TB of writes per day on a 2 TB drive over the warranty period, aligned with its 1200 TBW endurance.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it does not include PLP. Power loss protection is critical in enterprise workloads 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 most business use, RAID 1 or RAID 10 is recommended to improve redundancy and performance. Avoid relying on a single drive, especially since this model has no PLP.