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| Brand | Samsung |
|---|---|
| Model | PM1645A |
| Capacity | 800 GB |
| Usage Class | Mixed Use |
| 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 | 3 |
| Total Bytes Written | 4380 TBW |
| Sequential Read | 1000 MB/s |
|---|---|
| Sequential Write | 1000 MB/s |
| Random Read IOPS | 230000 |
| Random Write IOPS | 90000 |
| Average Latency | 100 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILT800HCHG-00007 |
|---|
Compared with the previous MZILT800HCHG-00007, the Samsung PM1645A (MZILT800HBHQ-00AH3) delivers a newer V-NAND 3D TLC design with a stronger balance of 1,000/1,000 MB/s sequential performance and up to 230,000/90,000 IOPS, making it a more capable 800 GB SAS 12Gb/s choice for latency-sensitive mixed read/write enterprise workloads. Its 3 DWPD endurance and 4,380 TBW rating also give it clear value for write-active database, virtualization, and transactional storage tiers that need higher sustained reliability than entry endurance SAS SSDs in the same capacity class.
With an endurance rating of 4,380 TBW and 3 DWPD, the MZILT800HBHQ-00AH3 is designed to sustain heavy daily write activity throughout its intended service life. In typical enterprise or OS-drive workloads, this level of endurance means the drive can operate for many years with ample write margin, making it a dependable choice for long-term deployment. For enterprise reliability, the drive includes power loss protection (PLP), which helps preserve in-flight data and metadata during an unexpected power interruption, reducing the risk of corruption and unplanned recovery events. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects a very low uncorrectable error rate and strong overall dependability expected in business-critical storage environments.
1. The SAS 12Gb/s interface provides enterprise-grade compatibility with existing server and storage backplanes, enabling reliable deployment in mission-critical infrastructures without platform disruption.
2. With 1000 MB/s sequential read performance, the drive speeds up large-block workloads such as database snapshots, backup restores, and virtual machine image loading.
3. Delivering 230,000 K IOPS random read with a typical latency of 100 µs, it helps transactional databases and virtualized environments respond faster under highly concurrent access patterns.
4. A 3 DWPD endurance rating means the SSD can absorb sustained write-heavy enterprise workloads over its service life, lowering the risk of premature wear in always-on applications.
5. Samsung V-NAND 3D TLC flash combines higher density with mature endurance characteristics, giving data centers a strong balance of capacity efficiency, performance consistency, and cost control.
Lower capacity: 400 GB Higher capacity: 1.6 TB At 800 GB, the MZILT800HBHQ-00AH3 sits in the sweet spot of this enterprise SSD family. Compared with the 400 GB model, it offers much better headroom for OS images, logs, database growth, and mixed application workloads, reducing early capacity pressure. Compared with the 1.6 TB version, it keeps acquisition cost and per-node storage spend under tighter control while delivering essentially the same enterprise-class sequential throughput and random IOPS. This makes 800 GB especially well suited for mid-scale virtualization clusters, compact database nodes, and balanced boot-plus-application storage tiers.
Q: Is MZILT800HBHQ-00AH3 suitable for a write-heavy database server?
A: Yes. With 3 DWPD endurance, 4,380 TBW, SAS 12Gb/s, and about 100 µs typical latency, this SSD 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: It is rated for 3 full drive writes per day. On an 800 GB model, that equals 2.4 TB writes daily, matching 4,380 TBW over a standard 5-year warranty.
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 sudden outages, reducing corruption risk and improving reliability for databases, virtualization, and critical enterprise applications.
Q: What RAID level is recommended for this SSD?
A: For write-heavy and latency-sensitive workloads, RAID 10 is generally recommended because it provides strong performance, fast rebuilds, and redundancy. For capacity-focused environments, RAID 5 or RAID 6 may also be considered.