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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 3.84TB |
| Usage Class | Enterprise |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 3bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 7008 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 50000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS3T8HMLH |
|---|
Compared with the previous-generation MZILS3T8HMLH, the Samsung PM1643 (MZILT3T8HALS-00007) delivers a clear generational step in capacity efficiency and flash economics, offering 3.84TB of enterprise SAS 12Gb/s storage with Samsung V-NAND 3bit MLC (TLC) while sustaining up to 2100/1700 MB/s and 400K/50K IOPS. With 1 DWPD and 7008 TBW, it is a strong fit for virtualized infrastructure, scale-out databases, and mixed-read enterprise workloads that need a better balance of density, endurance, and per-drive performance than the MZILS3T8HMLH-era platform.
With an endurance rating of 7008 TBW and 1 DWPD, the MZILT3T8HALS-00007 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, OS, application, and mixed read/write workloads. In practical terms, for system-disk or mainstream server use, this level of endurance supports many years of stable operation without endurance-related concern under normal deployment conditions. Its enterprise reliability features further reduce operational risk: built-in power loss protection (PLP) helps preserve in-flight data and protects metadata integrity during an unexpected power interruption, which is critical for servers and storage systems. An Uncorrectable Bit Error Rate (UBER) of 1.0E-17, together with a 2 million hour MTBF, indicates a very low probability of unrecoverable read errors and supports dependable long-term data service in business-critical environments.
1. The SAS 12Gb/s interface provides dual-port enterprise connectivity and proven high-availability integration, making it ideal for mission-critical storage arrays and server backplanes.
2. Its 2100 MB/s sequential read performance accelerates large-block data access, helping databases, backup targets, and analytics platforms reduce bulk loading and scan times.
3. With 400,000 random read IOPS, the drive sustains fast response under highly concurrent workloads, improving VM density and transaction throughput in read-heavy environments.
4. Rated for 1 DWPD, it is well suited for mixed-use enterprise applications that need predictable endurance over years of continuous operation without overpaying for write-intensive media.
5. Samsung V-NAND 3-bit MLC (TLC) combined with 100 µs typical latency delivers a strong balance of flash efficiency and responsiveness, supporting consistent application performance in latency-sensitive business systems.
Reference capacities in the same series: Lower capacity: 1.92TB Current model: 3.84TB Higher capacity: 7.68TB Positioning analysis: At 3.84TB, this SSD sits at the practical sweet spot of the family. Compared with the 1.92TB version, it gives much better headroom for dataset growth, longer refresh cycles, and denser consolidation without changing the expected enterprise-class sequential throughput or random IOPS profile. Compared with the 7.68TB model, it usually delivers the best balance of usable capacity, acquisition cost, and fleet-wide standardization. It is especially well suited for mid-scale virtualization clusters, such as shared boot and application storage for roughly 40 to 60 business workloads.
Q: Is MZILT3T8HALS-00007 suitable for a write-heavy database server?
A: It can support mixed-use or moderate write database workloads, but for truly write-heavy database servers, 1 DWPD may be limiting. We generally recommend higher-endurance SSDs for sustained intensive writes.
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 handle one full drive write per day over its warranty period. For 3.84TB capacity, that equals about 3.84TB daily.
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 mapping tables during unexpected outages, reducing corruption risk and improving reliability in enterprise and RAID environments.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is typically recommended for databases needing strong performance and redundancy. RAID 5 or RAID 6 may suit read-focused environments, but parity writes can add overhead and SSD wear.