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| Brand | Samsung |
|---|---|
| Model | PM1635 |
| Capacity | 800GB |
| Usage Class | Enterprise |
| Host Interface | SAS 12Gb/s |
|---|---|
| Total Interface Bandwidth | 12 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 2bit MLC |
|---|---|
| Drive Writes Per Day | 3 |
| Total Bytes Written | 4380 TBW |
| Sequential Read | 940 MB/s |
|---|---|
| Sequential Write | 560 MB/s |
| Random Read IOPS | 190000 |
| Random Write IOPS | 35000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS800HCHP |
|---|
Compared with the earlier MZILS800HCHP, the MZILS800HCHP-000H3 is a later PM1635 enterprise revision that offers a more current drop-in path for installed SAS infrastructures while retaining Samsung’s proven 2-bit MLC V-NAND endurance at 3 DWPD and 4,380 TBW. Its combination of 12Gb/s SAS, up to 940/560 MB/s throughput, and 190,000/35,000 IOPS gives it a clear advantage over typical mixed-use SAS SSDs for latency-sensitive database, virtualization, and transaction logging workloads.
With an endurance rating of 4,380 TBW and 3 DWPD, the MZILS800HCHP-000H3 is built to handle sustained write-intensive enterprise workloads throughout its service life. In typical server or system-disk usage, this level of endurance provides a very comfortable margin for long-term operation, giving buyers confidence in stable use over many years. The drive also includes enterprise-grade power loss protection (PLP), which helps preserve in-flight data and metadata if power is interrupted unexpectedly, reducing the risk of corruption and downtime. Its UBER of 1.0E-17, together with a 2 million-hour MTBF, indicates an extremely low uncorrectable bit error rate and strong overall reliability for business-critical environments.
1. The SAS 12Gb/s interface, paired with near-saturated sequential bandwidth, speeds up large-block workloads such as backup, media streaming, and full-dataset scans while maintaining the high availability expected in enterprise storage arrays.
2. Its strong random read capability keeps transaction-heavy databases, virtualized environments, and metadata-intensive applications highly responsive under parallel access.
3. A 3 DWPD endurance rating makes it well suited for write-intensive enterprise workloads, allowing sustained daily overwrites throughout the service life without sacrificing reliability planning.
4. Samsung V-NAND 2-bit MLC provides a proven balance of performance consistency, flash longevity, and data integrity that is better aligned with mission-critical infrastructure than lower-endurance NAND types.
5. The low typical latency helps reduce application response time and tail-latency risk, which is especially valuable for OLTP systems, real-time analytics, and latency-sensitive virtual machines.
Lower capacity reference: 400GB Higher capacity reference: 1.6TB Capacity positioning analysis: Within this enterprise SSD family, the 800GB model sits at the practical sweet spot. Compared with the 400GB version, it provides much better headroom for OS images, application growth, logs, and overprovisioning, reducing capacity pressure in steady-state enterprise use. Compared with the 1.6TB option, it preserves a more attractive cost profile while delivering essentially the same enterprise-class sequential throughput and random IOPS behavior. This makes 800GB especially well suited for mid-scale virtualization clusters, such as shared boot and application storage for roughly 40 to 60 business workloads.
Q: Is MZILS800HCHP-000H3 suitable for a write-heavy database server?
A: Yes. With 3 DWPD endurance, 4380 TBW, Samsung V-NAND 2bit MLC, and low 110 µs typical latency, this 800GB SAS 12Gb/s SSD is well suited for write-intensive database 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. For an 800GB SSD, that equals about 2.4TB of writes daily across the warranty period, consistent with its 4380TB TBW specification.
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 unexpected outages, reducing corruption risk and improving reliability in enterprise servers, storage arrays, and database environments.
Q: What RAID level is recommended for this SSD?
A: RAID 10 is generally recommended for this SSD in performance-critical applications, as it balances speed, redundancy, and write efficiency. For capacity-focused deployments, RAID 5 or RAID 6 may also be considered.