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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 earlier MZILT7T6HMLA-00007, the MZILT7T6HMLA0D3 PM1643 stands out as a refined 7.68TB SAS 12Gb/s drop-in upgrade, combining 14,016 TBW endurance with up to 2100/1700 MB/s throughput and 400,000/40,000 IOPS for stronger sustained enterprise service levels. Its unique value in this class is pairing high-capacity Samsung V-NAND 3bit MLC with 1 DWPD reliability, making it especially well suited for read-intensive virtualization, scale-out databases, and mixed enterprise storage tiers that need SAS compatibility without sacrificing flash density.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZILT7T6HMLA0D3 is designed to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise boot, system, and mixed-read workloads. In practical terms, under normal server operating conditions, this level of endurance provides long-term peace of mind and can comfortably support use as a reliable system drive for many years. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps safeguard in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and improving service continuity. Its UBER rating of 1.0E-17 indicates an extremely low unrecoverable bit error rate, supporting high data integrity expectations in business-critical storage environments.
1. The SAS interface enables seamless deployment in dual-controller enterprise storage, while its strong sequential read bandwidth accelerates backup recovery, media streaming, and large dataset access.
2. Its high random read capability sustains fast response under heavily virtualized and database-driven workloads, helping more users and transactions run concurrently without bottlenecks.
3. The rated endurance is well suited for read-intensive enterprise environments, giving operators predictable lifespan and lower replacement pressure in always-on production systems.
4. Samsung V-NAND based on 3-bit MLC balances capacity, efficiency, and reliability, making it a practical fit for dense data center storage tiers that prioritize cost-effective performance.
5. The low typical latency helps applications retrieve data with minimal wait time, improving service responsiveness in latency-sensitive workloads such as OLTP, VDI, and real-time analytics.
Lower capacity reference: 3.84 TB Higher capacity reference: 15.36 TB In this series, the 7.68 TB model sits at the practical sweet spot between the 3.84 TB and 15.36 TB options. Compared with 3.84 TB, it offers much better headroom for data growth, denser VM placement, and longer refresh cycles without changing the expected enterprise-class performance profile. Compared with 15.36 TB, it delivers a more balanced acquisition cost, power budget, and risk-per-drive while still providing strong usable capacity. It is especially well suited for mid-scale virtualization clusters, mixed database nodes, or high-density read/write application servers.
Q: Is MZILT7T6HMLA0D3 suitable for a write-heavy database server?
A: It can support mixed-use and moderate write-intensive database workloads, but with 1 DWPD, it is not the best choice for extremely write-heavy servers requiring consistently higher daily endurance.
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 7.68 TB drive write per day over its warranty period, aligned with its 14,016 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 preserve in-flight data and metadata during unexpected outages, which is critical for preventing corruption and maintaining storage consistency in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is generally recommended for this SSD in performance-sensitive enterprise environments, as it balances speed, redundancy, and rebuild efficiency better than parity-based RAID for transactional workloads.