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| Brand | Samsung |
|---|---|
| Model | PM1645A |
| Capacity | 1.6TB |
| Usage Class | Enterprise |
| Host Interface | SAS |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | TLC V-NAND |
|---|---|
| Drive Writes Per Day | 3 |
| Total Bytes Written | 8760 TBW |
| Sequential Read | 1000 MB/s |
|---|---|
| Sequential Write | 1000 MB/s |
| Random Read IOPS | 230000 |
| Random Write IOPS | 130000 |
| Average Latency | 120 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-IL1T6A |
|---|
Compared with the earlier MZ-IL1T6A generation, the MZ-ILT1T6B PM1645A is the stronger choice for write-intensive SAS enterprise tiers, combining 3 DWPD and 8,760 TBW with sustained 1,000/1,000 MB/s throughput and 230K/130K IOPS performance. Its 1.6TB TLC V-NAND design is particularly well suited to OLTP databases, virtualization clusters, and log-heavy mixed workloads that need predictable latency, high endurance, and easy integration into 12Gb/s SAS infrastructure.
With an endurance rating of 8,760 TBW, the MZ-ILT1T6B is designed for very heavy write activity and can sustain substantial daily data writes over its service life. In typical workloads such as OS boot, application hosting, or read-intensive enterprise use, this level of endurance is far beyond normal demand and supports worry-free operation for many years. Its built-in power loss protection helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and improving system integrity. An UBER of 1.0E-17, together with a 2 million-hour MTBF, reflects enterprise-class data reliability and a very low probability of uncorrectable read errors in continuous operation.
1. The SAS interface, paired with gigabyte-class sequential read performance, integrates cleanly into dual-controller enterprise storage and accelerates large backup, streaming, and analytics workloads.
2. Its strong random read capability sustains fast response under highly concurrent VM, database, and metadata-heavy application access patterns.
3. A write endurance rating designed for multiple full-drive rewrites per day makes it a reliable fit for mixed-use enterprise environments with steady transaction activity.
4. TLC V-NAND balances density, power efficiency, and cost, giving data centers a practical way to scale flash capacity without sacrificing enterprise-grade consistency.
5. The low typical latency helps reduce storage wait time, improving application responsiveness for latency-sensitive workloads such as OLTP, virtualization, and real-time services.
Lower-capacity reference: 800GB Higher-capacity reference: 3.2TB In this SSD family, the 1.6TB MZ-ILT1T6B sits at the sweet spot of capacity planning. Compared with the 800GB model, it gives much better headroom for VM growth, log expansion, and overprovisioning without forcing an early storage refresh. Compared with the 3.2TB option, it usually delivers the best balance of acquisition cost, usable capacity, and enterprise-grade performance consistency, since sequential throughput and random IOPS remain broadly similar across the range. It is especially well suited for a mid-sized virtualization cluster hosting about 60 to 80 general-purpose virtual machines.
Q: Is MZ-ILT1T6B suitable for a write-heavy database server?
A: Yes. The MZ-ILT1T6B is well suited for write-heavy database workloads, thanks to its 3 DWPD endurance, 8760 TBW rating, SAS interface, TLC V-NAND, and low 120 µs typical latency.
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. With 1.6TB capacity, that equals about 4.8TB of writes daily, aligning with its total endurance rating of 8760 TBW.
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 unexpected outages, which is critical for maintaining data integrity and reducing corruption risk.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is commonly recommended for this SSD in performance-sensitive and write-intensive environments, as it balances redundancy and speed. RAID 1 or RAID 5 may fit other capacity or budget needs.