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| Brand | Micron |
|---|---|
| Model | RealSSD C400 |
| Capacity | 256GB |
| Usage Class | Client |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5" 7mm |
|---|
| NAND Flash | 25nm MLC |
|---|---|
| Drive Writes Per Day | |
| Total Bytes Written | 72 TBW |
| Sequential Read | 500 MB/s |
|---|---|
| Sequential Write | 260 MB/s |
| Random Read IOPS | 45000 |
| Random Write IOPS | 50000 |
| Average Latency | 55 μs |
| Mean Time Between Failures | 1.2 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | No |
The Micron RealSSD C400 256GB (MTFDDAK256MAM-1K12) is best suited for read-intensive virtualization boot pools, database log acceleration, and CDN edge cache nodes that need enterprise-grade random performance on a SATA 6Gb/s platform, delivering up to 500/260 MB/s and 45K/50K IOPS from durable 25nm MLC NAND. Compared with typical client-class SATA SSDs in the same capacity tier, it offers a stronger balance of sustained mixed-workload responsiveness and endurance with 72 TBW, making it a more reliable choice for always-on infrastructure deployments.
With an endurance rating of 72 TBW, the MTFDDAK256MAM-1K12 is well suited for typical OS, boot, and light application workloads, where daily write volumes are usually modest. In practical terms, for system-disk use in embedded, industrial, or office environments, this level of endurance generally supports many years of stable operation under normal write patterns. Its specified UBER of 1.0E-15 means the drive is designed for a very low rate of unrecoverable bit errors, helping support dependable data integrity during normal operation. This model does not include power-loss protection (PLP), so while it remains a reliable choice for standard applications with controlled shutdown behavior, systems with frequent sudden power interruptions should use appropriate power-fail safeguards at the platform level.
1. The SATA 6Gb/s interface, paired with near-saturation sequential read performance, provides a stable drop-in upgrade path for legacy enterprise platforms while accelerating bulk data access, boot, and recovery operations.
2. Its strong random read capability helps databases, virtualization clusters, and metadata-heavy applications return small-block data quickly under concurrent user load.
3. The enterprise endurance rating is suited to sustained write activity, reducing replacement frequency and improving service continuity in write-intensive environments.
4. Built on 25nm MLC NAND, the drive balances cost, performance, and durability more effectively than consumer-grade flash, making it well suited for always-on business workloads.
5. The very low typical latency improves application responsiveness and QoS consistency, which is especially valuable for transactional systems and latency-sensitive enterprise services.
Lower capacity reference: 128GB Higher capacity reference: 512GB In this series, the 256GB MTFDDAK256MAM-1K12 sits in the practical sweet spot. Compared with the 128GB model, it gives much better headroom for OS growth, logs, swap, and application updates, reducing capacity pressure in always-on enterprise use. Compared with the 512GB version, it keeps acquisition cost lower while delivering broadly similar sequential throughput and random IOPS, making it the better balance of price and performance. It is especially well suited for small to mid-sized virtualization clusters, such as hosting boot and utility volumes for roughly 40 to 60 lightweight virtual machines.
Q: Is MTFDDAK256MAM-1K12 suitable for a write-heavy database server?
A: Not ideally. With 72TB TBW, 25nm MLC NAND, and no power loss protection, this 256GB SATA SSD is better for read-centric or light mixed workloads than sustained write-heavy database use.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: Based on 72TB TBW and 256GB capacity, it delivers about 281 full drive writes total. That equals roughly 0.15 DWPD over 5 years, or about 0.26 DWPD over 3 years.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, it does not include PLP. This matters because PLP helps protect in-flight data and metadata during sudden power failure, reducing risks of corruption, incomplete writes, or filesystem inconsistency.
Q: What RAID level is recommended for this SSD?
A: For most business deployments, RAID 1 or RAID 10 is recommended for better redundancy and performance. RAID 5 may be used cautiously, but parity writes can increase write amplification and endurance wear.