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| Brand | Samsung |
|---|---|
| Model | PM1643A |
| Capacity | 1.92 TB |
| Usage Class | Read Intensive |
| Host Interface | SAS 12.0 Gbps |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5" |
|---|
| NAND Flash | Samsung V-NAND 5th-Gen 92-layer 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 | 380000 |
| Random Write IOPS | 40000 |
| 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-00007 |
|---|
The Samsung PM1643A (MZILT1T9HBJR-00007) is a strong fit for enterprise read-centric to mixed workloads on legacy SAS infrastructure, combining 1.92 TB capacity with 2,100/1,800 MB/s sequential performance, 380K/40K IOPS, and 3,504 TBW in a stable 12 Gbps SAS form factor. Compared with the previous-generation MZILT1T9HAJQ-00007, it advances to Samsung 5th-Gen 92-layer V-NAND, providing a higher-density, more modern flash platform with stronger efficiency and a better balance of throughput and endurance for server and storage-array refreshes.
With an endurance rating of 3504 TBW and 1 DWPD, the MZILT1T9HBJR-00007 is designed to handle rewriting its full 1.92TB capacity once per day across its rated service life, which is more than sufficient for typical enterprise boot, OS, application, and mixed read/write workloads. In practical terms, for common system-disk or infrastructure use cases, this level of endurance provides long-term write headroom and can support many years of stable operation without endurance becoming a concern. 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 recovery confidence. Its UBER of 1.0E-17 indicates an extremely low probability of uncorrectable bit errors, which is a key indicator of strong data integrity for business-critical storage environments.
1. The SAS 12Gb/s interface ensures seamless integration with dual-controller enterprise storage arrays, delivering the high availability and predictable performance required in mission-critical datacenters.
2. Its strong sequential read throughput accelerates full-dataset scans, backup restores, and analytics jobs, helping large files move through the pipeline faster.
3. The drive’s high random-read capability, paired with very low typical latency, keeps transactional databases and virtualized workloads highly responsive even under heavy parallel access.
4. A 1 DWPD endurance rating makes it a solid fit for read-centric and mixed-use enterprise deployments that need dependable daily rewrite capability over the drive’s service life.
5. Samsung 5th-Gen 92-layer 3D TLC V-NAND provides a balanced combination of density, power efficiency, and reliability, enabling cost-effective scaling for enterprise storage tiers.
For Samsung MPN MZILT1T9HBJR-00007 with 1.92 TB capacity, the adjacent capacities in the same enterprise SSD family are typically: lower_capacity: 960 GB higher_capacity: 3.84 TB These capacities usually stay in the same enterprise performance class, with broadly similar sequential read/write behavior and random IOPS, while the main difference is usable capacity and cost per drive. Capacity positioning analysis: At 1.92 TB, this model sits in the sweet spot of the lineup. Compared with the 960 GB version, it offers much better headroom for data growth, overprovisioning flexibility, and denser consolidation without forcing an early storage refresh. Compared with the 3.84 TB option, it delivers a more balanced acquisition cost while retaining essentially the same enterprise-class performance profile. This makes it especially well suited for mid-sized virtualization clusters, such as hosting boot and application volumes for about 40 to 70 mixed-workload virtual machines.
Q: Is MZILT1T9HBJR-00007 suitable for a write-heavy database server?
A: It can support mixed or moderate write-intensive database workloads, but for truly write-heavy servers, 1 DWPD may be limiting. It is better suited for enterprise applications balancing read performance, endurance, and latency.
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 1.92 TB drive write per day over its warranty period, aligned with its 3504 TBW endurance specification.
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 outages, reducing corruption risk and maintaining storage integrity in enterprise and transactional environments.
Q: What RAID level is recommended for this SSD?
A: For most enterprise deployments, RAID 10 is recommended for the best balance of performance, redundancy, and write efficiency. RAID 5 or 6 may work, but write penalty should be considered.