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| Brand | Samsung |
|---|---|
| Model | 845DC PRO |
| Capacity | 800 GB |
| Usage Class | Write Intensive |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5 |
|---|
| NAND Flash | Samsung V-NAND 24-layer 2-bit MLC |
|---|---|
| Drive Writes Per Day | 10 |
| Total Bytes Written | 14600 TBW |
| Sequential Read | 530 MB/s |
|---|---|
| Sequential Write | 460 MB/s |
| Random Read IOPS | 92000 |
| Random Write IOPS | 51000 |
| Average Latency | 45 μs |
| Mean Time Between Failures | 2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
| MPN | MZ-7WD800 |
|---|
Compared with the MZ-7WD800, the MZ-7WD800EW 845DC PRO moves to Samsung 24-layer 2-bit MLC V-NAND and delivers a stronger endurance profile of 10 DWPD and 14,600 TBW while maintaining high SATA performance at 530/460 MB/s and 92,000/51,000 IOPS. Its unique value in the SATA enterprise tier is pairing write-intensive durability with predictable low-latency behavior, making it a strong fit for OLTP databases, write-heavy virtualization, and enterprise cache or log workloads where consistency matters more than raw interface bandwidth.
With an endurance rating of 14,600 TBW and 10 DWPD, the MZ-7WD800EW is designed for very write-intensive enterprise workloads and can sustain rewriting its full capacity ten times per day throughout its rated service life. In typical deployment scenarios, this level of endurance is far beyond the needs of a boot or system drive, meaning it can be used for many years with substantial write headroom and minimal wear concerns. For enterprise reliability, the drive includes power-loss protection (PLP), which helps preserve data in flight and prevents corruption if power is interrupted unexpectedly. Its UBER of 1.0E-17 indicates an extremely low uncorrectable bit error rate, supporting high data integrity and dependable operation in business-critical storage environments.
1. The SATA 6Gb/s interface, paired with 530 MB/s sequential read performance, makes this drive an easy drop-in upgrade for legacy enterprise servers that need faster boot, backup, and dataset streaming without changing the storage backplane.
2. With 92,000 random-read IOPS, the SSD can sustain highly concurrent access patterns, helping virtualized environments and database clusters return small-block data faster under heavy user load.
3. Rated for 10 DWPD, it is built for write-intensive enterprise workloads such as logging, caching, OLTP, and analytics, where the drive must absorb frequent full-capacity rewrites over its service life.
4. Samsung 24-layer 2-bit MLC V-NAND provides a stronger balance of endurance, consistency, and data integrity than read-centric flash, making it better suited for mission-critical storage tiers.
5. The 45 µs typical latency enables very fast response to incoming I/O, reducing transaction wait time and helping latency-sensitive applications maintain predictable QoS during peak demand.
Lower-capacity reference: 400 GB Higher-capacity reference: 1.6 TB Capacity positioning analysis: In this series, the 800 GB model sits at the practical sweet spot. Compared with the 400 GB version, it gives noticeably more headroom for OS images, application growth, log retention, and spare capacity, reducing the risk of early capacity pressure. Compared with the 1.6 TB option, it usually delivers a better balance between acquisition cost and usable flash while keeping broadly similar enterprise-class sequential and random I/O behavior. It is especially well suited for a mid-sized virtualization cluster, such as hosting boot and utility volumes for about 40 to 60 virtual machines.
Q: Is MZ-7WD800EW suitable for a write-heavy database server?
A: Yes. The MZ-7WD800EW is well suited for write-heavy database workloads, thanks to its 10 DWPD endurance, 14,600 TBW rating, low 45 µs latency, and enterprise-grade Samsung 2-bit MLC V-NAND.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: It is rated for 10 full drive writes per day. With 800 GB capacity, that equals about 8 TB of writes daily, aligning with its high 14,600 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, which is critical for maintaining data integrity and reducing corruption risk in enterprise systems.
Q: What RAID level is recommended for this SSD?
A: The recommended RAID level depends on the application. RAID 10 is typically preferred for write-intensive workloads, while RAID 1 or RAID 5/6 may suit capacity or redundancy priorities.