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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| 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 64-layer 3D TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 3504 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 380000 |
| Random Write IOPS | 40000 |
| Average Latency | 135 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-ILS400N |
|---|
Compared with the earlier MZ-ILS400N generation, the PM1643 (MZILT1T9HAJQAD3) advances to Samsung 64-layer 3D TLC V-NAND and delivers a stronger SAS 12 Gb/s performance/endurance profile, reaching up to 2100/1700 MB/s, 380,000/40,000 IOPS, and 3504 TBW at 1.92 TB. For enterprise mixed-read workloads such as virtualization clusters, database servers, and scale-out storage, it offers a well-balanced upgrade path with higher flash density and more modern throughput characteristics than its predecessor while maintaining a dependable 1 DWPD rating.
With an endurance rating of 3504 TBW and 1 DWPD, the MZILT1T9HAJQAD3 is designed to sustain writing its full usable capacity once per day throughout its rated service life. In typical enterprise or mixed-use workloads, this level of endurance provides ample headroom for long-term deployment, and for lighter-duty roles such as an OS or boot drive, it can support many years of reliable operation with confidence. This SSD also includes enterprise-class reliability protections, including Power Loss Protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is interrupted unexpectedly. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting high data integrity in demanding environments, while the 2 million-hour MTBF further reflects a design focused on dependable continuous operation.
1. The SAS 12.0 Gbps interface gives this drive broad compatibility with dual-controller enterprise storage and existing server backplanes, making upgrades straightforward in mission-critical environments.
2. With sequential read performance of 2100 MB/s, it accelerates full-dataset scans, backup restores, and large file streaming for analytics and virtualization workloads.
3. Delivering 380,000 K IOPS in random reads, it sustains fast response under highly fragmented access patterns such as OLTP databases, VDI boot storms, and metadata-heavy applications.
4. Rated at 1 DWPD, it is well suited for read-centric enterprise deployments that need predictable endurance across years of continuous operation without overpaying for unnecessary write headroom.
5. Built on Samsung V-NAND 64-layer 3D TLC and featuring a typical latency of 135 µs, it balances flash density, cost efficiency, and consistently quick access times for latency-sensitive business services.
Lower capacity reference: 960 GB Higher capacity reference: 3.84 TB At 1.92 TB, this SSD sits in the sweet spot of the family. Compared with the 960 GB model, it offers much better capacity headroom for OS images, application data, logs, and short-term growth, reducing the need for early drive replacement. Compared with the 3.84 TB version, it typically delivers a more attractive cost profile while keeping enterprise-class read/write and random IOPS behavior broadly in the same range. It is a strong fit for mid-scale deployments, such as a 2-node virtualization cluster hosting about 60 to 80 mixed business workloads.
Q: Is MZILT1T9HAJQAD3 suitable for a write-heavy database server?
A: MZILT1T9HAJQAD3 is better suited for read-intensive or mixed-use workloads. With 1 DWPD, it can handle steady writes, but it is not the ideal choice for very write-heavy database environments.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This SSD is rated for 1 DWPD, meaning it can sustain one full 1.92 TB drive write per day over its warranty period, aligned with its 3504 TB 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 outages, which is critical for maintaining data integrity and reducing corruption risk in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is generally recommended for this SSD when performance and redundancy are both important. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered, depending on workload needs.