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| Brand | Samsung |
|---|---|
| Model | PM1655 |
| Capacity | 3.2 TB |
| Usage Class | Mixed Use |
| Host Interface | SAS 24Gb/s |
|---|---|
| Total Interface Bandwidth | 24 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 6th-Gen TLC |
|---|---|
| Drive Writes Per Day | 3 |
| Total Bytes Written | 17520 TBW |
| Sequential Read | 4300 MB/s |
|---|---|
| Sequential Write | 3200 MB/s |
| Random Read IOPS | 800000 |
| Random Write IOPS | 170000 |
| Average Latency | 95 μs |
| Mean Time Between Failures | 2.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT3T2HALS-00007 |
|---|
Compared with the previous-generation MZILT3T2HALS-00007, the Samsung PM1655 MZILG3T2HCLS-00AH3 steps up to a 24Gb/s SAS interface and 6th-Gen V-NAND TLC, delivering up to 4300/3200 MB/s and 800,000/170,000 IOPS for materially higher bandwidth and transaction density in the same 3.2 TB class. With 3 DWPD and 17,520 TBW endurance, it is a strong fit for latency-sensitive OLTP databases, virtualized server clusters, and mixed read/write enterprise workloads that need SAS dual-port reliability without sacrificing flash-era performance.
With an endurance rating of 17,520 TBW and 3 DWPD, this SSD is designed for sustained heavy write activity and can handle approximately 4.8 TB of writes per day for 10 years. In typical real-world use such as an OS boot drive, virtualization host, database cache, or read-intensive enterprise workload, this level of endurance provides a very comfortable margin and long-term peace of mind. Its built-in power loss protection (PLP) helps preserve in-flight data and metadata during sudden power failure, reducing the risk of corruption and improving service continuity in enterprise environments. An UBER of 1.0E-17 means the probability of an unrecoverable bit error is extremely low, and together with the 2.5 million-hour MTBF, it reflects the high reliability expected for business-critical storage deployments.
1. The SAS 24Gb/s interface provides dual-port enterprise connectivity and high-availability path redundancy, making this drive well suited for mission-critical storage arrays and failover-sensitive server platforms.
2. Its strong sequential read performance accelerates large-block data movement, helping databases, analytics clusters, and backup systems shorten ingest, scan, and restore windows.
3. The combination of very high random read capability and low typical latency enables faster response under mixed transactional workloads, improving VM density and reducing application wait time in OLTP and virtualized environments.
4. A 3 DWPD endurance rating gives enterprises the write durability needed for heavy daily rewrite workloads such as logging, caching, and consistently active databases over the full service life of the drive.
5. Samsung 6th-Gen V-NAND TLC balances enterprise-grade capacity, efficiency, and reliability, delivering a cost-effective flash foundation for always-on data center deployments.
Lower capacity reference: 1.6 TB Higher capacity reference: 6.4 TB Capacity positioning analysis: In this product family, the 3.2 TB model sits at the practical sweet spot. Compared with the 1.6 TB version, it gives much more headroom for workload growth, denser VM placement, and longer refresh cycles without quickly running into capacity limits. Compared with the 6.4 TB option, it usually delivers a better cost-to-usable-space balance while keeping broadly similar enterprise-class sequential throughput and random IOPS. This makes 3.2 TB especially suitable for mid-scale virtualization clusters, database nodes, or hyper-converged hosts serving roughly 40 to 70 business application instances.
Q: Is MZILG3T2HCLS-00AH3 suitable for a write-heavy database server?
A: Yes. With 3 DWPD endurance, 17,520 TBW, 24Gb/s SAS, and 95 µs typical latency, the MZILG3T2HCLS-00AH3 is well suited for write-intensive database and enterprise transactional workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 3 drive writes per day. For a 3.2 TB SSD, that equals about 9.6 TB of writes daily across its defined warranty period.
Q: Does it include power loss protection (PLP) and why is that critical?
A: Yes, it includes PLP. Power loss protection helps preserve in-flight data and metadata during unexpected outages, reducing corruption risk and improving reliability in enterprise storage environments.
Q: What RAID level is recommended for this SSD?
A: RAID recommendation depends on your priority. RAID 10 is typically preferred for write-heavy databases, delivering strong performance, redundancy, and faster rebuild behavior than parity-based RAID levels.