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| Brand | Samsung |
|---|---|
| Model | PM1643 Series |
| Capacity | 1.92TB |
| Usage Class | Enterprise Data Center / Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 15mm |
|---|
| NAND Flash | Samsung 64-layer 3D V-NAND TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 40000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 2.0 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS1T9HEJH |
|---|
The PM1643 Series MZILT1T9HAJQ0D3 brings Samsung’s 64-layer 3D V-NAND TLC to a 1.92TB 12Gb/s SAS SSD, delivering up to 2100/1700 MB/s and 400,000/40,000 IOPS—an excellent fit for virtualization clusters, scale-up database servers, and mission-critical SAN tiers that need predictable mixed-workload performance. Compared with the previous-generation MZILS1T9HEJH, it provides a clear generational uplift in NAND architecture and sustained throughput while maintaining enterprise-class 1 DWPD endurance at 3504 TBW, making it a stronger drop-in upgrade for existing SAS infrastructures that need more performance per drive bay.
With an endurance rating of 3504 TBW and 1 DWPD, the MZILT1T9HAJQ0D3 is built to handle writing its full capacity every day across the warranty period, which is more than sufficient for typical enterprise boot, system, and mixed-use workloads. In practical terms, under normal server operating patterns and OS/application drive usage, this level of endurance provides long-term, worry-free service and ample write headroom for sustained daily operation. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protects mapping information during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting high data integrity for business-critical environments, while the 2 million-hour MTBF further reinforces dependable continuous operation.
1. The SAS interface provides enterprise-grade dual-port connectivity and broad server compatibility, making this drive a strong fit for highly available storage arrays and mission-critical infrastructure.
2. Its sequential read performance accelerates large-block workloads such as backup, data warehousing, and content delivery, helping reduce wait times for bulk data access.
3. The strong random read capability is well suited for transaction-heavy databases, virtual desktop environments, and read-centric cloud workloads that depend on fast small-block access at scale.
4. Built with Samsung’s 3D V-NAND TLC and rated for daily full-drive rewrites, it delivers a practical balance of capacity efficiency, write endurance, and consistent performance for mixed-use enterprise deployments.
5. The low typical latency supports responsive application behavior and tighter QoS control, which is especially valuable in virtualization clusters and latency-sensitive business systems.
Lower capacity reference: 960GB Higher capacity reference: 3.84TB The 1.92TB MZILT1T9HAJQ0D3 sits at the sweet spot of this enterprise SSD family. Compared with the 960GB version, it gives much better headroom for OS images, application data, logs, and growth, reducing early capacity pressure in production. Compared with the 3.84TB model, it typically delivers the same class of sequential throughput and random IOPS while keeping acquisition cost and cost-per-node more controlled. This makes 1.92TB an excellent mainstream choice for mid-scale virtualization clusters, such as hosting boot and application volumes for about 40 to 60 virtual machines.
Q: Is MZILT1T9HAJQ0D3 suitable for a write-heavy database server?
A: MZILT1T9HAJQ0D3 is better suited for mixed-use workloads rather than highly write-heavy databases. With 1 DWPD and 3504 TBW, it supports steady enterprise writes, but intensive write-centric environments may require higher-endurance SSDs.
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 handle one full 1.92TB drive write per day across its warranty term. Its total endurance is specified at 3504 TBW.
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 sudden power failure, reducing corruption risk and improving data integrity for enterprise storage applications.
Q: What RAID level is recommended for this SSD?
A: Recommended RAID level depends on your priority. RAID 10 is ideal for database performance and redundancy, while RAID 5 or RAID 6 offers better capacity efficiency for general enterprise storage.