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| Brand | Samsung |
|---|---|
| Model | PM1643a |
| 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 3D TLC |
|---|---|
| Drive Writes Per Day | 1 |
| Total Bytes Written | 14016 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 1800 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 70000 |
| 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 MZILT7T6HMLA-00007, the Samsung PM1643a (MZ-ILT7T6C) is a clear generational step-up for enterprise SAS tiers, pairing 7.68 TB of usable capacity with 14,016 TBW endurance and up to 2,100/1,800 MB/s plus 400,000/70,000 IOPS for a stronger mixed-workload profile. Its standout value is delivering high-capacity, read-optimized-to-mixed-performance storage on a proven 12Gb/s SAS interface, making it especially well suited for virtualized databases, scale-out storage nodes, and business-critical application clusters that need predictable latency and enterprise endurance.
With an endurance rating of 14,016 TBW and 1 DWPD, the MZ-ILT7T6C is designed to handle writing its full capacity once per day throughout its rated service life, which is more than sufficient for typical enterprise system, boot, and mixed-read workloads. In practical terms, under normal OS, application, logging, and cache activity, this level of endurance provides long-term peace of mind and can comfortably support many years of continuous operation without endurance becoming a concern. For enterprise reliability, the drive includes 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 and MTBF of 2 million hours indicate a very low probability of unrecoverable read errors and strong long-run operational reliability, giving procurement teams added confidence for business-critical deployments.
1. The SAS 12Gb/s interface provides dual-port, enterprise-grade connectivity that supports high availability and predictable integration in mission-critical storage arrays and servers.
2. With 2100 MB/s sequential read performance, this SSD accelerates large-block data access for backup, media streaming, analytics, and fast dataset loading.
3. Delivering 400,000 K IOPS in random reads, it is well suited for latency-sensitive workloads such as virtualization, OLTP databases, and heavily indexed applications.
4. Rated for 1 DWPD, the drive offers balanced write endurance for mixed-use enterprise environments that need dependable daily operation without overprovisioning for extreme write cycles.
5. Built with Samsung V-NAND 3D TLC and a typical latency of 100 µs, it combines density and cost efficiency with responsive service times for consistently smooth application performance.
Lower capacity reference: 3.84 TB Higher capacity reference: 15.36 TB Capacity positioning analysis: Within this SSD family, 7.68 TB sits at the practical sweet spot. Compared with 3.84 TB, it gives much better headroom for data growth, denser VM placement, and longer refresh cycles without changing the familiar enterprise performance profile. Compared with 15.36 TB, it usually delivers a more attractive cost-per-drive and lowers overprovisioning risk while keeping read/write throughput and random IOPS broadly in line. This makes 7.68 TB especially well suited for mid-scale virtualization clusters, database nodes, or all-flash arrays serving about 30 to 50 mixed business workloads.
Q: Is MZ-ILT7T6C suitable for a write-heavy database server?
A: MZ-ILT7T6C can support database workloads, but with 1 DWPD it is better suited for mixed-use or moderate write environments rather than highly write-intensive database servers.
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 sustain one full 7.68 TB drive write per day throughout its warranty period, aligned with 14,016 TBW endurance.
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 consistency, integrity, and enterprise application reliability.
Q: What RAID level is recommended for this SSD?
A: For most enterprise deployments, RAID 10 is recommended for the best balance of performance, redundancy, and low latency. RAID 5 or 6 may fit capacity-focused environments with write penalties.