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| Brand | Samsung |
|---|---|
| Model | PM963 |
| Capacity | 1.92 TB |
| Usage Class | Read Intensive |
| Host Interface | PCIe Gen3 x4 |
|---|---|
| Total Interface Bandwidth | 8 Gb/s |
| Form Factor | U.2 |
|---|
| NAND Flash | Samsung V-NAND 3D TLC |
|---|---|
| Drive Writes Per Day | 1.3 |
| Total Bytes Written | 4366 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1200 MB/s |
| Random Read IOPS | 430000 |
| Random Write IOPS | 40000 |
| Average Latency | 90 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-QLB1T90 |
|---|
Compared with the previous-generation MZ-QLB1T90, the MZ-QLW1T90 PM963 advances to a PCIe Gen3 x4 NVMe architecture, delivering up to 2100/1200 MB/s and 430,000/40,000 IOPS for a clear step-up in throughput and queue-depth scalability. Its 1.92 TB Samsung V-NAND 3D TLC design also pairs 1.3 DWPD with 4366 TBW, making it a stronger fit than its predecessor for read-intensive virtualization, scale-out storage, and mixed enterprise workloads that need both endurance headroom and predictable latency.
With an endurance rating of 4366 TBW and 1.3 DWPD, the MZ-QLW1T90 is built to handle substantial daily write activity over its service life. In typical enterprise use such as an OS, boot, or general application drive, this level of endurance is comfortably sufficient for long-term deployment and can support many years of operation without write-life concerns. Enterprise reliability is further strengthened by power-loss protection (PLP), which helps preserve in-flight data and metadata during an unexpected power outage, reducing the risk of corruption and unplanned recovery events. Its 1.0E-17 UBER and 2 million-hour MTBF reflect a high-integrity, enterprise-grade design that helps procurement teams minimize data risk and maintain dependable system availability.
1. The PCIe Gen3 x4 interface provides ample host bandwidth for enterprise virtualization and scale-out storage, keeping the drive from becoming a bottleneck under mixed production workloads.
2. With 2100 MB/s sequential read performance, the SSD accelerates backup restores, analytics scans, and large dataset loading to improve service responsiveness.
3. Up to 430,000 random read IOPS, paired with a typical latency of just 90 µs, enables fast transaction handling and consistently snappy access to small-block data in database and VDI environments.
4. A 1.3 DWPD endurance rating supports steady day-after-day write activity, giving enterprises confidence in deploying the drive for always-on business applications.
5. Samsung V-NAND 3D TLC balances high flash density with proven reliability, making it well suited for cost-efficient enterprise capacity without sacrificing predictable performance.
Lower-capacity reference: 960 GB Higher-capacity reference: 3.84 TB Capacity positioning analysis: At 1.92 TB, this model sits in the sweet spot of the series. Compared with the 960 GB version, it gives much better headroom for OS images, application growth, logs, and overprovisioning, reducing early capacity pressure in production. Compared with the 3.84 TB option, it delivers a more balanced acquisition cost while keeping broadly similar enterprise-class throughput and IOPS characteristics. This makes 1.92 TB especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 general-purpose virtual machines.
Q: Is MZ-QLW1T90 suitable for a write-heavy database server?
A: Yes. With 1.3 DWPD, 4366 TBW endurance, low 90 µs typical latency, and Samsung V-NAND 3D TLC, the MZ-QLW1T90 is suitable for many write-intensive database and transactional workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: It is rated for 1.3 full drive writes per day. For a 1.92 TB SSD, that equals about 2.5 TB of writes daily, consistent with its 4366 TBW endurance rating.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP helps preserve in-flight data and metadata during unexpected outages, reducing corruption risk and improving reliability for databases, virtualization, and enterprise storage environments.
Q: What RAID level is recommended for this SSD?
A: The best RAID level depends on your goal. RAID 1 or RAID 10 is recommended for performance-critical databases and redundancy, while RAID 5 or RAID 6 may suit capacity-focused environments.