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| Brand | Samsung |
|---|---|
| Model | 990 PRO |
| Capacity | 4TB |
| Usage Class | Consumer |
| Host Interface | PCIe Gen 4.0 x4, NVMe 2.0 |
|---|---|
| Total Interface Bandwidth | 16 Gb/s |
| Form Factor | M.2 (2280) |
|---|
| NAND Flash | Samsung V-NAND 3-bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 0.33 |
| Total Bytes Written | 2400 TBW |
| Sequential Read | 7450 MB/s |
|---|---|
| Sequential Write | 6900 MB/s |
| Random Read IOPS | 1600000 |
| Random Write IOPS | 1550000 |
| Average Latency | 60 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-V8P2T0BW |
|---|
The Samsung 990 PRO 4TB (MZ-V9P4T0BW) stands out as a high-density PCIe 4.0 NVMe 2.0 client SSD that combines 7,450/6,900 MB/s sequential throughput with up to 1,600,000/1,550,000 IOPS, making it an excellent fit for large game libraries, AI/creator workstations, and heavy scratch-disk workloads that need both capacity and low-latency responsiveness. Compared with the previous-generation MZ-V8P2T0BW, it delivers a clear generational uplift by doubling usable capacity to 4TB while pairing that expansion with 2,400 TBW endurance and flagship-class random performance, giving engineers more headroom for write-intensive local workloads without sacrificing speed.
With an endurance rating of 2400 TBW, this 4 TB SSD can sustain approximately 657 GB of host writes per day for 10 years, which is far beyond the write volume of a typical OS, office, and general business workstation. In practical procurement terms, that means it is more than sufficient as a long-life system drive or read-heavy application drive under normal enterprise user workloads. The specified UBER of 1.0E-16 means the expected rate of uncorrectable read errors is extremely low, supporting strong data integrity, while the 1.5 million-hour MTBF further indicates solid long-term component reliability. This model does not include power-loss protection (PLP), so it is best suited to environments with stable power or UPS coverage rather than write-critical applications where in-flight data must be protected during sudden power interruption.
1. The PCIe Gen 4 x4 interface with NVMe 2.0 gives this drive the bandwidth and command efficiency needed to keep virtualization clusters, analytics nodes, and GPU servers fed without storage becoming the bottleneck.
2. Its 7,450 MB/s sequential read performance accelerates large-block workloads such as database snapshot recovery, media streaming, and rapid dataset loading for AI pipelines.
3. With 1.6 million random read IOPS, the drive can sustain extremely heavy parallel transaction activity, helping reduce queue buildup in high-concurrency OLTP, VDI, and metadata-intensive environments.
4. A 0.33 DWPD endurance profile is well aligned with read-centric enterprise deployments, offering cost-efficient reliability for content delivery, boot, caching, and scale-out storage tiers with moderate daily write volume.
5. Samsung V-NAND 3-bit MLC (TLC) paired with a typical latency of 60 µs enables dense flash capacity with responsive access times, supporting faster application response and more predictable QoS under mixed enterprise workloads.
Lower-capacity reference: 2TB, MPN MZ-V9P2T0BW Higher-capacity reference: No larger official capacity exists within the same MZ-V9P series; 4TB is the top-capacity model. At 4TB, the MZ-V9P4T0BW sits at the sweet spot of the series. Compared with the 2TB model, it gives materially better headroom for VM images, active datasets, logs, and growth, reducing the need for early capacity expansion while keeping the same general performance profile. Since there is no larger in-series step above 4TB, this model effectively delivers the best balance of capacity, cost efficiency, and flagship-tier speed. It is especially well suited for a dense virtualization host, such as supporting about 60 to 80 light-to-medium duty virtual desktops or application instances.
Q: Is MZ-V9P4T0BW suitable for a write-heavy database server?
A: MZ-V9P4T0BW is generally not ideal for write-heavy database servers. Its 0.33 DWPD and lack of PLP make it better suited for high-performance client, read-focused, or mixed-use workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated for 0.33 drive writes per day, meaning about one-third of its 4TB capacity can be written daily on average over the warranty period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it 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 interruptions.
Q: What RAID level is recommended for this SSD?
A: For this SSD, RAID 1 or RAID 10 is typically recommended when redundancy and performance are both important. RAID 0 improves speed but provides no fault tolerance.