Secure payments
Standard refund policy
Trade Assurance
| Brand | Samsung |
|---|---|
| Model | PM961 |
| Capacity | 256GB |
| Usage Class | Client |
| Host Interface | NVMe |
|---|---|
| Total Interface Bandwidth | 32 Gb/s |
| Form Factor | M.2 2280 |
|---|
| NAND Flash | TLC V-NAND |
|---|---|
| Drive Writes Per Day | 0.33 |
| Total Bytes Written | 150 TBW |
| Sequential Read | 2800 MB/s |
|---|---|
| Sequential Write | 1100 MB/s |
| Random Read IOPS | 250000 |
| Random Write IOPS | 180000 |
| Average Latency | 50 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZVLV256HCHP |
|---|
Compared with the previous-generation MZVLV256HCHP, the Samsung PM961 MZVLW256HEHP delivers a clear generational step up in NVMe client storage performance, reaching 2800/1100 MB/s sequential throughput and 250,000/180,000 IOPS to improve boot, application load, and multitasking responsiveness. Its 256GB TLC V-NAND design also pairs 150 TBW endurance with 0.33 DWPD, making it a stronger fit than its predecessor for thin-and-light notebooks and mobile workstations that need higher bandwidth without sacrificing reliability.
With an endurance rating of 150 TBW and 0.33 DWPD, the MZVLW256HEHP is well suited for typical OS boot, office, and general business workloads where daily write volume is relatively modest. In practical terms, for a 256GB system drive this level of endurance is enough to support many years of normal enterprise client use, making it a dependable choice as a primary system disk over its service life. For reliability, the drive is specified at 1.5 million hours MTBF and a UBER of 1.0E-15, meaning the risk of unrecoverable read errors is very low and aligned with standard commercial SSD expectations. This model does not include power-loss protection, so it is best matched to boot and read-centric applications rather than write-critical cache or transactional workloads, while still providing solid day-to-day reliability for standard business environments.
1. The NVMe interface, paired with strong sequential throughput, accelerates OS boot, VM image loading, and large-scale dataset streaming in latency-sensitive enterprise servers.
2. High random-read capability enables databases, VDI farms, and metadata-heavy applications to serve far more concurrent requests with faster response under peak demand.
3. A 0.33 DWPD endurance profile is well suited to read-centric enterprise workloads, helping control storage cost in content delivery, analytics, and boot-tier deployments.
4. TLC V-NAND provides an effective balance of capacity, power efficiency, and reliability, making it a practical fit for dense data center storage where cost per TB matters.
5. Typical latency of 50 µs helps reduce application wait time, improving transaction responsiveness and overall QoS consistency in multi-tenant infrastructure.
Lower capacity reference: 128GB Higher capacity reference: 512GB Within this series, the 256GB model sits at the practical sweet spot. Compared with the 128GB version, it gives noticeably more headroom for OS images, logs, patch growth, and overprovisioning, reducing early capacity pressure in always-on environments. Compared with the 512GB option, it keeps acquisition cost and fleet standardization more manageable while delivering broadly similar sequential throughput and random IOPS for typical enterprise workloads. It is best suited for small to mid-size clusters, such as hosting boot and utility volumes for about 30 to 50 virtualized application instances.
Q: Is MZVLW256HEHP suitable for a write-heavy database server?
A: MZVLW256HEHP is generally not recommended for write-heavy database servers. With 0.33 DWPD, 150TB TBW, TLC V-NAND, and no PLP, it is better suited for read-focused or mixed workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated at 0.33 DWPD, meaning about one-third of its 256GB capacity can be written daily over the warranty period. That equals roughly 84GB of writes per day.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, MZVLW256HEHP does not include power loss protection. PLP is critical in enterprise environments because it helps prevent in-flight data loss and metadata corruption during sudden power failures.
Q: What RAID level is recommended for this SSD?
A: For this SSD, RAID 1 or RAID 10 is typically recommended for better data protection and performance balance. RAID 5 is less ideal due to additional write overhead and endurance impact.