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| Brand | Samsung |
|---|---|
| Model | PM1645 |
| Capacity | 800 GB |
| 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 3D TLC |
|---|---|
| Drive Writes Per Day | 3 |
| Total Bytes Written | 4380 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 400000 |
| Random Write IOPS | 65000 |
| Average Latency | 115 μs |
| Mean Time Between Failures | 2.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-75E2T0BW |
|---|
Compared with the older MZ-75E2T0BW, the PM1645 moves from SATA-era performance limits to a 12.0 Gbps SAS platform, delivering up to 2100/2000 MB/s and 400,000 random-read IOPS for a clear generational uplift in enterprise latency and throughput. Its 3 DWPD endurance and 4,380 TBW rating on Samsung V-NAND 3D TLC give this 800 GB model a stronger advantage for write-intensive virtualization, OLTP, and cache-tier workloads where predecessor-class SSDs become the bottleneck.
With an endurance rating of 4,380 TBW and 3 DWPD, the MZILT800HAHQ0D3 is built to handle intensive enterprise write workloads over its service life. In typical server or system-disk usage, this level of endurance provides a very comfortable margin and can support many years of reliable operation without endurance becoming a practical concern. This SSD also includes power loss protection (PLP), which helps preserve in-flight data and protects metadata integrity if power is unexpectedly interrupted. Its enterprise-class UBER of 1.0E-17 indicates an extremely low probability of unrecoverable bit errors, supporting high data integrity and dependable performance in business-critical environments.
1. The dual-port SAS interface enables highly available storage paths and predictable performance, making this drive a strong fit for mission-critical servers and enterprise arrays.
2. Its strong sequential read capability speeds up large-block workloads such as database scans, backup restores, and analytics data ingestion.
3. The combination of very high random read performance and low response latency helps OLTP databases, virtualized workloads, and metadata-heavy applications serve more transactions with faster user response times.
4. This endurance class is well suited for write-intensive enterprise environments, allowing sustained daily data rewrites over the full service life without sacrificing reliability.
5. Samsung V-NAND 3D TLC provides a balanced mix of capacity, efficiency, and enterprise-grade consistency, helping reduce storage cost while maintaining dependable performance at scale.
Lower-capacity reference: 400 GB Higher-capacity reference: 1.6 TB In this family, the 800 GB model is the sweet-spot choice. Compared with the 400 GB version, it gives much better headroom for OS images, logs, swap, and application growth, reducing the risk of early capacity pressure while keeping similar enterprise-class read/write and IOPS behavior. Compared with the 1.6 TB option, it usually delivers the best balance between acquisition cost, usable space, and predictable performance. It is especially well suited for mid-sized virtualization clusters, such as shared boot and utility storage for about 30 to 50 business workloads.
Q: Is MZILT800HAHQ0D3 suitable for a write-heavy database server?
A: Yes. With 3 DWPD endurance, 4380 TBW, SAS 12.0 Gbps, and 115 µs typical latency, MZILT800HAHQ0D3 is well suited for write-intensive database and transactional server workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: This model is rated for 3 DWPD, meaning it can handle three full 800 GB drive writes per day throughout the warranty period, assuming usage remains within the specified endurance rating.
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 sudden outages, reducing corruption risk and improving reliability for enterprise storage environments.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on your priority. RAID 10 is typically preferred for high write performance and redundancy, while RAID 5 or 6 may suit capacity-focused deployments.