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| Brand | Samsung |
|---|---|
| Model | PM9D3a |
| Capacity | 960 GB |
| Usage Class | Enterprise / Data Center Read Intensive |
| Host Interface | PCIe Gen5 x4, NVMe 2.0 |
|---|---|
| Total Interface Bandwidth | 128 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V8 (236-layer) TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 1752 TBW |
| Sequential Read | 8000 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 1100000 |
| Random Write IOPS | 65000 |
| Average Latency | 65 μs |
| Mean Time Between Failures | 2.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZQL2960HCJR-00A07 |
|---|
Compared with the previous-generation MZQL2960HCJR-00A07, the Samsung PM9D3a MZWL6960HFJA-00AW7 advances to a PCIe Gen5 x4, NVMe 2.0 platform with 236-layer V8 TLC NAND, delivering up to 8,000 MB/s sequential read and 1.1M random read IOPS for a clear step-up in host-side bandwidth and read responsiveness in the 960 GB class. Its 1 DWPD / 1,752 TBW endurance profile makes it a strong fit for read-intensive cloud, content delivery, and scale-out boot or cache tiers, where it offers newer-generation interface headroom and higher transaction density than its predecessor without overprovisioning for write-heavy duty cycles.
With an endurance rating of 1,752 TBW and 1 DWPD, this SSD is designed to handle a full drive write per day across its rated service life, which is more than sufficient for typical enterprise system-disk duties such as OS, boot, patching, swap, logs, and routine application updates. In practical terms, under normal server and appliance workloads, this level of write endurance provides a strong margin for long-term, worry-free deployment rather than being limited by everyday write activity. For enterprise reliability, built-in power loss protection (PLP) helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and improving system recovery confidence. Its UBER of 1.0E-17 indicates an extremely low rate of uncorrectable bit errors, while the 2.5 million hour MTBF further supports dependable operation in business-critical environments.
1. The PCIe Gen5 x4 interface with NVMe 2.0 gives this drive the host-side bandwidth and protocol efficiency needed to keep next-generation database, virtualization, and AI servers from being storage-starved.
2. Its sequential read performance enables ultra-fast dataset, image, and backup-file access, helping enterprises shorten boot, restore, and analytics preparation windows.
3. Its random read capability is built for heavily parallel workloads such as OLTP databases, metadata services, and large-scale virtualization, where consistently high small-block throughput improves VM and application responsiveness.
4. With a 1 DWPD endurance rating, the drive is well suited to mixed-read enterprise deployments that need predictable lifespan and lower replacement risk under continuous daily production use.
5. Samsung V8 236-layer TLC NAND paired with typical latency in the tens of microseconds delivers a strong balance of density, power efficiency, and near-instant data access for latency-sensitive cloud and transactional workloads.
Lower capacity reference: 800 GB Higher capacity reference: 1.92 TB At 960 GB, this SSD sits in the sweet spot of the family. Compared with the 800 GB model, it gives noticeably better headroom for OS images, hot data, logs, and routine growth, reducing early capacity pressure in production. Compared with the 1.92 TB option, it preserves nearly the same enterprise-class read/write and random IOPS behavior while offering a more efficient cost-per-deployment point. In practice, 960 GB is 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 MZWL6960HFJA-00AW7 suitable for a write-heavy database server?
A: It can support moderate database workloads, but for truly write-heavy database servers, 1 DWPD is usually considered mixed-use rather than intensive write endurance. Higher-DWPD enterprise SSDs would be safer.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 1 DWPD, meaning it can sustain one full 960GB drive write per day across its warranty period, aligned with the 1752TB total 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 power failure, which is critical for enterprise reliability, consistency, and reduced corruption risk.
Q: What RAID level is recommended for this SSD?
A: For most enterprise deployments, RAID 1 or RAID 10 is recommended for strong redundancy and performance. RAID 5 or 6 may work, but parity writes can increase SSD write stress.