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| Brand | Samsung |
|---|---|
| Model | PM1645A |
| Capacity | 7.68 TB |
| Usage Class | Mixed Use |
| Host Interface | SAS 12.0 Gbps |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5" |
|---|
| NAND Flash | Samsung V-NAND 5th-Gen 92-layer 3D TLC |
|---|---|
| Drive Writes Per Day | 3 |
| Total Bytes Written | 42048 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 440000 |
| Random Write IOPS | 90000 |
| Average Latency | 115 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT7T6HMLA |
|---|
Compared with the previous-generation MZILT7T6HMLA, the MZ-ILT7T6A PM1645A advances to Samsung 5th-Gen 92-layer V-NAND and pairs 7.68 TB capacity with 3 DWPD and 42,048 TBW, giving it a stronger endurance-per-drive profile for long-life enterprise deployments. With up to 2100/2000 MB/s and 440K/90K IOPS over SAS 12 Gb/s, it is a particularly strong fit for write-intensive virtualization, OLTP, and tier-1 database workloads that need higher sustained performance without moving off proven SAS infrastructure.
With an endurance rating of 42,048 TBW and 3 DWPD, the MZ-ILT7T6A is built for sustained enterprise write workloads over its service life. In practical terms, this level of endurance is far beyond typical OS, application, or read-heavy server usage, making it a dependable choice for long-term deployment with ample write headroom. For enterprise reliability, the drive includes Power Loss Protection (PLP), which helps preserve in-flight data and protect metadata integrity if power is suddenly interrupted. Its ultra-low UBER of 1.0E-17, combined with a 2 million hour MTBF, supports very high data integrity and stable operation in business-critical environments.
1. The SAS 12Gbps interface, paired with strong sequential bandwidth, enables fast data streaming for backup targets, analytics nodes, and shared enterprise storage without requiring a PCIe-only infrastructure.
2. High random-read capability allows the drive to sustain heavy transaction concurrency, helping virtualized databases and read-intensive cloud workloads respond faster under peak demand.
3. A 3 DWPD endurance rating makes it well suited for write-active enterprise environments such as logging, OLTP, and mixed-use virtualization where consistent lifespan matters.
4. Samsung 5th-generation 92-layer 3D TLC V-NAND balances density, power efficiency, and reliability, giving enterprises a cost-effective flash tier for scaling capacity without sacrificing stability.
5. Very low typical latency helps reduce storage wait time per I/O, improving application responsiveness in latency-sensitive systems like trading platforms, metadata services, and real-time analytics.
Reference capacities in the same series: Lower capacity: 3.84 TB Higher capacity: 15.36 TB Capacity positioning analysis: At 7.68 TB, this SSD sits at the sweet spot of the family. Compared with the 3.84 TB model, it gives much better headroom for data growth, denser node design, and fewer drive slots consumed, while keeping the same class of enterprise sequential throughput and random IOPS. Compared with the 15.36 TB version, it delivers a more balanced cost-per-drive, easier budget control, and lower overprovisioning risk for mainstream workloads. It is especially well suited for mid-scale virtualization clusters, mixed database servers, or a 2U application node serving roughly 150 to 250 business users.
Q: Is MZ-ILT7T6A suitable for a write-heavy database server?
A: Yes. With 3 DWPD endurance, 42,048 TBW, low 115 µs typical latency, and SAS 12 Gbps connectivity, the MZ-ILT7T6A is well suited for write-intensive database and enterprise workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: It is rated for 3 full drive writes per day over a 5-year warranty period. For a 7.68 TB SSD, that aligns with the specified 42,048 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 mapping tables during sudden outages, reducing corruption risk and improving data integrity in enterprise storage environments.
Q: What RAID level is recommended for this SSD?
A: For write-heavy databases, RAID 10 is typically recommended because it offers strong performance, low write penalty, and fault tolerance. RAID 5 or 6 may suit capacity-focused workloads instead.