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| Brand | Samsung |
|---|---|
| Model | PM9A1 |
| Capacity | 512 GB |
| Usage Class | Client / PC |
| Host Interface | NVMe PCIe Gen4 x4 |
|---|---|
| Total Interface Bandwidth | 64 Gb/s |
| Form Factor | M.2 2280 |
|---|
| NAND Flash | TLC V-NAND |
|---|---|
| Drive Writes Per Day | 0.3 |
| Total Bytes Written | 300 TBW |
| Sequential Read | 6900 MB/s |
|---|---|
| Sequential Write | 5000 MB/s |
| Random Read IOPS | 800000 |
| Random Write IOPS | 800000 |
| Average Latency | 80 μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
| MPN | MZ-VLB512B |
|---|
Compared with the previous-generation MZ-VLB512B, the Samsung PM9A1 (MZ-VL2512A) advances to a PCIe Gen4 x4 interface and delivers up to 6,900/5,000 MB/s sequential performance with 800,000/800,000 IOPS, providing a clear generational gain in bandwidth and random responsiveness. Its 512 GB TLC V-NAND design, rated for 300 TBW at 0.3 DWPD, is especially well suited for high-performance client/workstation boot, build-cache, and read-heavy edge workloads that need near-flagship speed in a compact OEM NVMe form factor.
With an endurance rating of 300 TBW, the MZ-VL2512A can sustain about 82 GB of host writes per day for 10 years, which is well above the write volume of a typical OS, office, and general business system drive. In practical procurement terms, this makes it a solid choice for boot and mainstream client workloads, with ample endurance headroom for long-term everyday use. Its UBER specification of 1.0E-15 means the drive is designed for a very low rate of unrecoverable read errors, supporting dependable data access for normal business applications and fleet deployments. This model does not include power-loss protection (PLP), so while it is well suited for standard client and read-focused environments, systems handling write-critical transactions should use proper shutdown controls or upstream power backup to minimize risk during unexpected power interruption.
1. The NVMe over PCIe Gen4 x4 architecture gives this drive the bandwidth needed to remove storage as a bottleneck in virtualization clusters, analytics nodes, and high-throughput enterprise servers.
2. Its strong sequential read performance accelerates large-block workloads such as database backup restores, VM image loading, and media or AI dataset streaming.
3. The high random read capability enables fast response under heavily parallel access patterns, making it well suited for OLTP databases, metadata-intensive applications, and dense VDI environments.
4. This endurance profile is optimized for read-centric enterprise deployments where capacity efficiency and predictable service life matter more than sustained heavy overwrite activity.
5. Built on TLC V-NAND with low typical latency, it balances enterprise-grade cost efficiency with consistently quick access times for latency-sensitive applications and scalable cloud infrastructure.
Lower capacity reference: 256 GB Higher capacity reference: 1 TB In this SSD family, the 512 GB version sits at the sweet spot for mainstream enterprise deployment. Compared with the 256 GB model, it offers much better headroom for OS images, logs, swap space, and application growth, reducing early capacity pressure. Compared with the 1 TB model, it usually delivers the best balance of acquisition cost, usable capacity, and near-equivalent performance for typical mixed workloads. It is especially well suited for small to mid-sized virtualization clusters, such as hosting boot and utility volumes for about 40 to 60 business application instances.
Q: Is MZ-VL2512A suitable for a write-heavy database server?
A: MZ-VL2512A is not ideal for a write-heavy database server. With 0.3 DWPD, 300 TBW, and no PLP, it is better suited for read-focused or mixed, lighter enterprise workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated at 0.3 DWPD, meaning it can sustain about 0.3 full drive writes per day over its warranty period. For 512 GB capacity, that equals roughly 154 GB daily.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, MZ-VL2512A 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 failures.
Q: What RAID level is recommended for this SSD?
A: For this SSD, RAID 1 or RAID 10 is generally recommended when data protection and performance consistency matter. RAID 0 is not advised for business-critical workloads due to higher risk.