Samsung MZ-V9S4T0 4 TB 990 EVO Plus PCIe 4.0 x4 / PCIe 5.0 x2 M.2 2280 Client / Consumer Solid State Drive

General

Brand	Samsung
Model	990 EVO Plus
Capacity	4 TB
Usage Class	Client / Consumer

Interface

Host Interface	PCIe 4.0 x4 / PCIe 5.0 x2
Total Interface Bandwidth	16 Gb/s

Physical Dimension

Form Factor	M.2 2280

Flash & Endurance

NAND Flash	Samsung V-NAND 3-bit TLC
Drive Writes Per Day	0.33
Total Bytes Written	2400 TBW

Performance

Sequential Read	7250 MB/s
Sequential Write	6300 MB/s
Random Read IOPS	1050000
Random Write IOPS	140000
Average Latency	50 μs

Reliability

Mean Time Between Failures	1.5 Million Hours
Uncorrectable Bit Error Rate	1.0×10⁻¹⁷
Power Loss Protection	No

Part Number

MPN	MZ7L33T8HBNAAD3

Engineer's Note

The Samsung 990 EVO Plus 4 TB (MZ-V9S4T0) is a strong upgrade from MZ7L33T8HBNAAD3, moving from a legacy SATA-class platform to PCIe 4.0 x4 / PCIe 5.0 x2 and delivering up to 7,250/6,300 MB/s sequential performance with 1,050,000 random-read IOPS for dramatically lower data-access latency and far higher host bandwidth. Its standout value in this class is the combination of large 4 TB capacity, Samsung V-NAND 3-bit TLC, and 2,400 TBW endurance, making it especially well suited for high-speed workstation scratch space, AI dataset staging, and dense content-creation pipelines where you need near-flagship throughput without sacrificing write life.

Endurance & Reliability

With an endurance rating of 2400 TBW and 0.33 DWPD, the MZ-V9S4T0 can sustain about 2.4 petabytes of total writes over its service life, which is more than sufficient for typical OS, office, and general business workloads. In practical terms, for use as a system drive or in read-heavy applications, this level of endurance supports many years of normal operation and provides comfortable headroom for long-term deployment. The drive is rated at 1.5 million hours MTBF and an UBER of 1.0E-15, meaning it is designed for dependable operation with a very low probability of unrecoverable bit errors under normal conditions. It does not include power-loss protection (PLP), so while it is well suited for standard desktop, notebook, and non-critical business environments, workloads requiring in-flight write protection during sudden power failure should consider systems with external power safeguarding or drives with onboard PLP.

Technical Specs & Insights

1. The PCIe 4.0 x4 / PCIe 5.0 x2 host interface gives this drive broad platform compatibility while preserving enough bandwidth for dense virtualization nodes and modern edge servers without creating a storage bottleneck.
2. With sequential reads up to 7250 MB/s, it can pull large datasets, VM images, and analytics files into memory fast enough to noticeably shorten startup and batch-processing windows.
3. Delivering 1,050,000 K IOPS in random reads, it is well suited for metadata-heavy databases, VDI boot storms, and high-concurrency web services where query responsiveness matters more than raw capacity.
4. The 0.33 DWPD endurance profile, backed by Samsung V-NAND 3-bit TLC, makes it a strong fit for read-centric enterprise workloads that need cost-efficient flash performance with predictable lifecycle management.
5. A typical latency of 50 µs helps reduce tail-response delays, which is especially valuable for transactional applications and real-time inference pipelines that depend on consistently fast storage access.

Capacity Sweet

Reference capacities in the same lineup: Lower capacity: 2 TB Higher capacity: 8 TB Capacity positioning analysis: The 4 TB version sits at the sweet spot of this SSD family. Compared with the 2 TB model, it provides much better headroom for dataset growth, log retention, snapshots, and overprovisioning, reducing the risk of early capacity pressure in always-on enterprise workloads. Compared with the 8 TB model, it delivers a more attractive cost-to-performance balance, preserving nearly the same sequential throughput and random IOPS while keeping acquisition cost and per-node storage budget under tighter control. It is best suited for mid-scale virtualization clusters, such as shared storage for about 40 to 60 business application VMs.

FAQ