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| Brand | Samsung |
|---|---|
| Model | SM1625 |
| Capacity | 400GB |
| Usage Class | Enterprise |
| Host Interface | SAS |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | MLC |
|---|---|
| Drive Writes Per Day | 10 |
| Total Bytes Written | 7300 TBW |
| Sequential Read | 525 MB/s |
|---|---|
| Sequential Write | 460 MB/s |
| Random Read IOPS | 101000 |
| Random Write IOPS | 23000 |
| Average Latency | 115 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ5SI400HAGM |
|---|
Compared with the previous-generation MZ5SI400HAGM, the 400GB Samsung SM1625 (MPN: MZ6ER400HAGL-000C3) is positioned as a higher-endurance SAS drive, delivering 10 DWPD and 7,300 TBW with MLC NAND for write-intensive enterprise environments that demand longer service life and more predictable durability. With 525/460 MB/s sequential throughput and 101,000/23,000 IOPS random performance, it offers a strong balance of sustained write resilience and low-latency responsiveness for database logging, OLTP, and virtualization workloads.
With an endurance rating of 7,300 TBW and 10 DWPD, the MZ6ER400HAGL-000C3 is built for very write-intensive enterprise workloads and can comfortably handle repeated full-drive writes every day throughout its service life. In typical server or system-disk use, this level of endurance is far beyond normal operating demands, giving buyers strong confidence in long-term stability and low wear-related replacement risk. Its enterprise-grade reliability is further strengthened by power loss protection (PLP), which helps preserve in-flight data and maintain mapping-table integrity if power is suddenly interrupted. Combined with an Uncorrectable Bit Error Rate of 1.0E-16 and a 2 million hour MTBF, this drive is designed to deliver high data integrity and dependable operation in always-on business environments.
1. The SAS interface provides dual-port enterprise connectivity and high-availability path redundancy, making this drive a strong fit for mission-critical storage arrays and failover-sensitive server environments.
2. Its sequential read performance enables fast movement of large datasets, helping accelerate backup restores, log scanning, and streaming access in data-intensive business workloads.
3. The strong random read capability supports highly responsive performance for OLTP databases, virtual desktop farms, and metadata-heavy applications where small-block access dominates.
4. With a 10 DWPD endurance rating built on MLC NAND, this SSD is engineered for sustained write-intensive operation such as caching, journaling, and mixed enterprise workloads with heavy daily overwrite cycles.
5. The low typical latency helps reduce storage wait time at the application layer, improving transaction consistency and QoS in latency-sensitive enterprise systems.
Lower-capacity reference: 200GB Higher-capacity reference: 800GB In this product family, 400GB is the practical sweet spot. Compared with the 200GB model, it provides noticeably more headroom for OS growth, patching, swap, logs, and temporary workload spikes, reducing the chance of hitting capacity limits too early. Compared with the 800GB model, it keeps nearly the same enterprise-class latency and I/O behavior while maintaining better cost efficiency and avoiding excess unused capacity. This makes 400GB a strong fit for mid-sized deployments, such as boot and utility storage for about 30 to 50 application servers or a small virtualization cluster.
Q: Is MZ6ER400HAGL-000C3 suitable for a write-heavy database server?
A: Yes. With 10 DWPD endurance, 7,300 TBW, MLC NAND, SAS interface, and 115 µs typical latency, MZ6ER400HAGL-000C3 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 10 DWPD, meaning it can sustain 10 full 400GB drive writes per day across its warranty period, which aligns with its 7,300 TBW endurance 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 servers, databases, and RAID 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 because it offers strong performance and redundancy. RAID 5 or 6 may suit capacity-focused environments.