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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| Capacity | 1.92 TB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3D TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1800 MB/s |
| Random Read IOPS | 410000 |
| Random Write IOPS | 50000 |
| Average Latency | 115 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT1T9HAJQ-00007 |
|---|
The Samsung PM1643a 1.92TB (MZILT1T9HBJRAD3) stands out as a balanced 12Gb/s SAS enterprise SSD, combining Samsung V-NAND 3D TLC with 2100/1800 MB/s sequential throughput, 410,000/50,000 IOPS, and 1 DWPD endurance for 24×7 mixed-read server and storage array workloads. Compared with the previous-generation MZILT1T9HAJQ-00007, this PM1643a delivers a clear generational step forward in sustained bandwidth and random-read responsiveness while maintaining a strong 3504 TBW endurance profile, making it the stronger choice for latency-sensitive virtualization and database environments.
With an endurance rating of 3,504 TBW and 1 DWPD, the MZILT1T9HBJRAD3 is designed to handle writing its full usable capacity once per day across its rated service life, which is more than sufficient for typical enterprise boot, OS, and mixed application workloads. In practical terms, under common system-disk or read-heavy deployment scenarios, this level of endurance provides a very large write margin and supports long-term, worry-free operation. For enterprise reliability, built-in Power Loss Protection (PLP) helps preserve data in flight during an unexpected power interruption, reducing the risk of corruption and improving overall system integrity. Its UBER of 1.0E-17 indicates an extremely low unrecoverable bit error rate, meaning the drive is engineered for highly dependable data retention and read accuracy in business-critical environments.
1. The SAS 12Gb/s interface enables seamless integration into dual-port enterprise storage backplanes, providing the high availability and predictable interoperability required in mission-critical servers and arrays.
2. Its 2100 MB/s sequential read performance accelerates large-block workloads such as database backup, virtualization image loading, and analytics dataset streaming.
3. With 410,000 K IOPS random read capability, the drive can sustain heavy transaction concurrency, helping reduce bottlenecks in OLTP, VDI, and metadata-intensive applications.
4. A 1 DWPD endurance rating makes it well suited for mixed-read enterprise environments that need reliable daily rewrite capacity without overpaying for ultra-write-optimized media.
5. Built on Samsung V-NAND 3D TLC and delivering a typical latency of 115 µs, the SSD offers a strong balance of flash density, power efficiency, and consistently fast response for latency-sensitive business workloads.
Lower capacity reference: 960 GB Higher capacity reference: 3.84 TB In this series, the 1.92 TB model is the sweet-spot capacity. Compared with the 960 GB version, it gives much better headroom for OS images, logs, hot application data, and future growth, reducing the risk of early capacity pressure. Compared with the 3.84 TB option, it usually delivers the best balance of acquisition cost, usable space, and enterprise-grade performance that remains broadly similar across capacities. It is especially well suited for mid-sized virtualization clusters, such as hosting boot and application volumes for roughly 40–60 business workloads.
Q: Is MZILT1T9HBJRAD3 suitable for a write-heavy database server?
A: The MZILT1T9HBJRAD3 is better suited for mixed-use or read-intensive enterprise workloads. With 1 DWPD and 3504 TBW, it can handle steady writes, but not extremely write-heavy database environments.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated at 1 DWPD, meaning it can sustain one full drive write per day over its warranty period. For a 1.92 TB drive, that equals about 1.92 TB daily.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes power loss protection. PLP is critical in enterprise systems because it helps preserve in-flight data and metadata during sudden outages, reducing corruption risk and improving storage reliability.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is ideal for high database performance and redundancy, while RAID 5 or RAID 6 may suit capacity-focused enterprise deployments.