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| Brand | Samsung |
|---|---|
| Model | PM1645 |
| 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 3bit MLC (TLC) |
|---|---|
| Drive Writes Per Day | 3 |
| Total Bytes Written | 4380 TBW |
| Sequential Read | 2100 MB/s |
|---|---|
| Sequential Write | 2000 MB/s |
| Random Read IOPS | 440000 |
| Random Write IOPS | 100000 |
| Average Latency | 110 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZILS800HEHP |
|---|
Compared with the previous-generation MZILS800HEHP, the MZ-ILT800A PM1645 moves to a newer Samsung V-NAND platform and a more advanced 12Gb/s SAS implementation, delivering up to 2100/2000 MB/s and 440K/100K IOPS for a stronger mix of throughput and transactional responsiveness. Its distinctive value in the 800GB class is pairing enterprise-grade 3 DWPD endurance with 4,380 TBW, making it a precise fit for write-intensive database logs, virtualization clusters, and mixed OLTP workloads that need both sustained reliability and low-latency performance.
With an endurance rating of 4,380 TBW and 3 DWPD, the MZ-ILT800A is built to sustain heavy write activity over its service life, far beyond the needs of typical OS boot, application, and general server workloads. In practical terms, for system-disk or mixed enterprise use, this level of endurance provides strong long-term write headroom and can support stable operation for many years under normal deployment conditions. For enterprise reliability, the drive includes power-loss protection (PLP), which helps preserve in-flight data and prevents metadata corruption if power is unexpectedly interrupted. Its UBER of 1.0E-17, together with a 2 million hour MTBF, reflects enterprise-class data integrity and dependability, giving procurement teams added confidence for business-critical storage deployments.
1. The SAS 12Gb/s interface provides dual-port enterprise connectivity and enough bandwidth to keep shared storage, HA clusters, and mission-critical servers fed with consistent data access.
2. With sequential read performance up to 2100 MB/s, the drive accelerates backup restore, large dataset scans, and analytics workloads that depend on fast bulk data movement.
3. Its random read capability of 440,000 K IOPS helps virtualized environments and transactional databases handle heavy concurrency with faster application response under mixed access patterns.
4. Rated for 3 DWPD, this SSD is built for write-intensive enterprise use such as logging, OLTP, and caching, where sustained daily overwrites are expected over the drive’s service life.
5. Samsung V-NAND 3bit MLC (TLC) combines high flash density with mature enterprise tuning, delivering a strong balance of cost efficiency, capacity scaling, and dependable endurance.
Lower capacity: 400GB Higher capacity: 1.6TB In the MZ-ILT series, the 800GB model sits in the sweet spot for mainstream enterprise deployment. Compared with the 400GB version, it offers much better headroom for OS images, application growth, logs, and overprovisioning, reducing capacity pressure over time. Compared with the 1.6TB option, it delivers nearly the same class of sequential and random performance while keeping acquisition cost and power budget more controlled. This makes 800GB especially suitable for mid-sized virtualization clusters, such as hosting boot and middleware storage for about 40 to 60 virtual machines.
Q: Is MZ-ILT800A suitable for a write-heavy database server?
A: Yes. With 3 DWPD endurance, 4380 TBW, 12Gb/s SAS, and typical 110 µs latency, the MZ-ILT800A is well suited for write-intensive database, OLTP, and enterprise server workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: The rated endurance is 3 full drive writes per day. For an 800GB SSD, that equals about 2.4TB of writes daily across the warranty period, consistent with 4380 TBW.
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 in enterprise and transactional environments.
Q: What RAID level is recommended for this SSD?
A: RAID choice depends on your workload. RAID 10 is generally recommended for databases needing strong write performance and redundancy, while RAID 5 or 6 may suit capacity-focused applications.