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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 | TLC V-NAND |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1800 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 50000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT1T9HAJQ-000H3 |
|---|
Compared with the previous MZILT1T9HAJQ-000H3, the Samsung PM1643a MZILT1T9HBJR-00AH3 provides a newer 1.92TB SAS 12Gb/s enterprise SSD platform tuned for faster data-path efficiency, delivering up to 2100/1800 MB/s and 400,000/50,000 IOPS with TLC V-NAND. Its 1 DWPD rating and 3504 TBW make it a stronger fit for read-intensive virtualization, database, and mixed transactional workloads that need predictable dual-port SAS reliability while pushing higher throughput than legacy 12Gb/s SAS drives.
With an endurance rating of 3,504 TBW and 1 DWPD, the MZILT1T9HBJR-00AH3 is designed to sustain writing its full usable capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise boot, caching, and mixed-read application workloads. In practical terms, for a system-drive or general server deployment with normal daily write volumes, this level of endurance supports many years of stable operation with substantial write headroom. For enterprise reliability, this SSD includes power loss protection (PLP), which helps preserve in-flight data and maintain metadata integrity if power is unexpectedly interrupted, reducing the risk of corruption and downtime. Its UBER of 1.0E-17, combined with a 2 million hour MTBF, indicates an enterprise-class level of data integrity and long-term operational stability that procurement teams can confidently deploy in business-critical environments.
1. The dual-port SAS interface enables seamless integration into mission-critical storage arrays, providing high availability and predictable performance in existing enterprise backplanes.
2. Its sequential read capability accelerates large-block workloads such as backup restores, media streaming, and analytics scans, reducing time-to-data for throughput-heavy applications.
3. The strong random read performance is well suited for virtualization, OLTP databases, and high-concurrency boot volumes where fast access to small data blocks drives user responsiveness.
4. With an endurance profile designed for steady daily full-drive writes, it fits mixed-use enterprise environments that need reliable write sustainability without overprovisioning for extreme write workloads.
5. Built on TLC V-NAND with low typical latency, the drive balances storage density, cost efficiency, and consistently quick response times for latency-sensitive business applications.
Lower capacity reference: 960 GB Higher capacity reference: 3.84 TB At 1.92 TB, this SSD sits at the sweet spot of the family. Compared with the 960 GB model, it gives materially more headroom for OS images, application data, logs, and 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 density, and enterprise-grade performance consistency, since sequential throughput and random IOPS remain broadly similar across capacities. It is especially well suited for mid-scale virtualization clusters, such as supporting about 40 to 60 mixed-workload virtual machines per node.
Q: Is MZILT1T9HBJR-00AH3 suitable for a write-heavy database server?
A: It can support mixed or moderate write database workloads, but with 1 DWPD, it is not ideal for highly write-intensive database servers that require higher sustained write endurance.
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 1.92 TB drive write per day over its warranty period, consistent with its 3504 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 sudden power failure, which is critical for enterprise reliability, consistency, and storage integrity.
Q: What RAID level is recommended for this SSD?
A: For enterprise use, RAID 1, RAID 10, or RAID 5/6 may be selected based on performance and redundancy needs. RAID 10 is commonly recommended for database and virtualization workloads.