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| Brand | Samsung |
|---|---|
| Model | PM1643 |
| Capacity | 7.68 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 4th-Gen 64-layer 3D TLC |
|---|---|
| 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 | 50000 |
| Average Latency | 140 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 earlier MZILT7T6HMLA-00007, the PM1643 MZILT7T6HMLA-000C3 advances to Samsung 4th-Gen 64-layer V-NAND, delivering a denser 7.68TB enterprise SAS SSD with up to 2100/1700 MB/s sequential performance, 400,000/50,000 IOPS, and 14,016 TBW at 1 DWPD in the same 12Gbps SAS class. It is a strong fit for mixed-read enterprise databases, virtualization clusters, and scale-up storage arrays that need more usable capacity per slot than prior-generation SAS drives without sacrificing predictable endurance or dual-port SAS reliability.
With an endurance rating of 14,016 TBW, the MZILT7T6HMLA-000C3 can absorb more than 14 petabytes of host writes, which is a very high write budget for its class. In typical workloads such as OS boot, application hosting, virtualization, and routine enterprise read/write activity, this level of endurance provides ample margin and can comfortably support use as a system or infrastructure drive for many years, including long-term deployment scenarios of up to 10 years under moderate write intensity. This SSD also includes enterprise-grade power loss protection (PLP), which helps preserve in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting strong data integrity expectations in business-critical environments where reliability and predictable operation are essential.
1. The dual-port SAS interface enables seamless integration into mission-critical storage arrays, delivering the availability, compatibility, and failover behavior enterprises expect in always-on environments.
2. Its strong sequential read performance speeds up large-block workloads such as backup recovery, media streaming, and data warehouse scans, reducing time to access bulk datasets.
3. The drive’s high random read capability, paired with consistently low latency, helps absorb VM boot storms, accelerate index lookups, and keep transactional applications responsive under heavy concurrency.
4. A durability profile designed for one full drive rewrite per day makes it well suited to read-centric enterprise workloads like virtualization, web infrastructure, and business analytics with moderate write intensity.
5. Samsung’s fourth-generation 3D TLC V-NAND provides a practical balance of density, efficiency, and dependable performance, making it a strong fit for cost-conscious enterprise deployments at scale.
Lower capacity reference: 3.84 TB Higher capacity reference: 15.36 TB Capacity positioning analysis: In this enterprise SSD family, 7.68 TB is the practical sweet spot. Compared with the 3.84 TB model, it gives much more headroom for dataset growth, VM expansion, and longer refresh cycles without immediately pushing teams into higher drive counts. Compared with the 15.36 TB option, it usually delivers the best balance of acquisition cost, usable capacity, and predictable enterprise-class performance, while keeping RAID design and replacement planning simpler. It is especially well suited for mid-scale virtualization clusters, such as hosting boot and application volumes for roughly 60 to 90 virtual machines.
Q: Is MZILT7T6HMLA-000C3 suitable for a write-heavy database server?
A: It can support mixed or moderate write-intensive database workloads, but with 1 DWPD it is not ideal for highly write-heavy environments. For sustained heavy writes, a higher-endurance enterprise SSD is recommended.
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 7.68 TB drive write per day over its warranty period, consistent with its 14,016 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 power failure, which is essential for maintaining data integrity and reducing corruption risk in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: The best RAID level depends on the workload. RAID 10 is typically recommended for databases needing strong performance and redundancy, while RAID 5 or 6 may suit capacity-focused applications with acceptable write overhead.