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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 7.68 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 3bit MLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 14016 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1700 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 40000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT7T6HMLA-00007 |
|---|
Compared with the previous-generation MZILT7T6HMLA-00007, the PM1643 MZILT7T6HMLAAD3 is the stronger 12Gb/s SAS upgrade for enterprise tiers that need more flash capacity per slot and better read-centric performance, combining 7.68 TB of Samsung V-NAND 3-bit MLC with 2,100/1,700 MB/s throughput and up to 400K/40K IOPS. With 1 DWPD and 14,016 TBW, it is particularly well suited to virtualization, scale-out database, and analytics environments that require dual-port SAS availability and high usable density without moving to a heavier write-endurance class.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZILT7T6HMLAAD3 is designed to support steady, write-intensive enterprise use throughout its service life. In typical server and system-disk workloads, this level of endurance means the drive can operate for many years with ample write headroom, giving buyers strong confidence in long-term deployment stability. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protect mapping tables if power is interrupted unexpectedly. Its UBER specification of 1.0E-17, together with a 2 million hour MTBF, indicates a very low probability of uncorrectable bit errors and a reliability profile well suited for business-critical storage environments.
1. The SAS 12Gb/s interface ensures seamless integration with established enterprise storage backplanes while providing dependable dual-port connectivity for mission-critical servers and arrays.
2. Its 2100 MB/s sequential read speed accelerates large-block data access, helping analytics platforms, backup recovery, and media streaming workloads complete faster.
3. With 400,000 random read IOPS, the drive can sustain highly concurrent transaction-heavy workloads, reducing application wait time in virtualized databases and OLTP environments.
4. Rated for 1 DWPD, it is well suited for read-centric enterprise deployments that need predictable lifespan and controlled operating costs across the full warranty period.
5. Samsung V-NAND 3bit MLC paired with a typical latency of 100 µs delivers a balanced mix of density, power efficiency, and consistently responsive performance for latency-sensitive business applications.
Lower capacity reference: 3.84 TB Higher capacity reference: 15.36 TB In this product family, 7.68 TB is the sweet-spot capacity. Compared with 3.84 TB, it gives much better headroom for data growth, VM density, and mixed read/write workloads, reducing the risk of early capacity bottlenecks without changing the expected enterprise-class performance profile. Compared with 15.36 TB, it delivers a more efficient balance of acquisition cost, usable capacity, and performance consistency, making it easier to standardize across fleets. It is best suited for mid-scale virtualization clusters, database nodes, or hyperconverged infrastructure pools serving about 150 to 250 business applications or virtual desktops.
Q: Is MZILT7T6HMLAAD3 suitable for a write-heavy database server?
A: It can support database workloads, but with 1 DWPD it is better suited for mixed-use or read-intensive servers rather than highly write-heavy database environments with sustained intensive daily writes.
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 7.68 TB drive write per day over its warranty period, aligned with the 14016 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 prevent in-flight data loss and metadata corruption during sudden outages, which is critical for enterprise storage reliability and data integrity.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for this SSD in performance-sensitive enterprise applications, as it provides strong read/write performance, redundancy, and faster rebuilds compared with parity-based RAID levels.