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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 | mSATA |
|---|
| 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 | 40000 |
| Random Write IOPS | 50000 |
| Average Latency | 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 (MTFDDAT256MAM) is a strong fit for read-intensive virtualization boot tiers, VDI images, and database read caches, where its SATA 6Gb/s interface, 500/260 MB/s throughput, and up to 40K/50K random read/write IOPS deliver distinctly faster system responsiveness than typical 3Gb/s-era client SSDs. Built on 25nm MLC NAND with 72 TBW endurance, it offers a more durable and performance-balanced option for mixed enterprise client workloads than many same-generation consumer drives that prioritize peak sequential reads over sustained write consistency.
With a rated endurance of 72 TBW, this 256GB SSD can sustain about 19GB of host writes per day for 10 years, or roughly 197GB per day over its 1-year warranty period, which is more than sufficient for typical OS, boot, application, and light business workloads. In practical terms, when used as a system drive rather than a heavy write-cache or logging device, it offers comfortable endurance headroom for long-term everyday operation. On reliability, the specified UBER of 1.0E-15 indicates a very low uncorrectable bit error rate, helping ensure strong data integrity during normal read operations, while the 1.2 million-hour MTBF supports dependable continuous service. This model does not include power-loss protection (PLP), so it is best suited to environments with stable power or upstream UPS protection, where it can still provide reliable performance for non-transaction-critical use cases.
1. The SATA 6Gb/s interface with 500 MB/s sequential read performance enables straightforward drop-in upgrades for legacy enterprise platforms while accelerating boot, imaging, and large-file retrieval tasks.
2. With 40,000 K IOPS random read capability, this drive helps databases, virtual desktop pools, and metadata-heavy workloads respond faster under highly concurrent access patterns.
3. Rated for [dwpd] DWPD, it is built to sustain predictable write-intensive enterprise usage over time, reducing replacement frequency and supporting stricter service-life planning.
4. Built on 25nm MLC NAND, the drive offers a stronger balance of endurance, data retention, and cost efficiency than consumer-oriented flash in always-on business environments.
5. The typical latency of [latency] µs helps minimize storage wait time, improving application responsiveness and making performance more consistent across transactional workloads.
Lower capacity reference: 128GB Higher capacity reference: 512GB In this SSD family, the 256GB model sits at the practical sweet spot. Compared with the 128GB version, it offers much better headroom for OS images, logs, metadata, and application growth, reducing early capacity pressure in enterprise deployments. Compared with the 512GB option, it preserves nearly the same read/write and random IOPS profile while delivering a more balanced cost-per-node for scale-out infrastructure. This makes 256GB especially suitable for medium-density virtualization clusters, such as providing boot and utility storage for around 40–60 compute nodes in a private cloud environment.
Q: Is MTFDDAT256MAM suitable for a write-heavy database server?
A: Not ideally. With 72TB TBW, 25nm MLC NAND, and no power loss protection, MTFDDAT256MAM is better suited for light to moderate workloads than sustained write-heavy database server environments.
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 supports about 281 full drive writes total. Assuming a 5-year warranty, that equals roughly 0.15 drive writes per day.
Q: Does it include power loss protection (PLP) and why is that critical?
A: No, this model does not include PLP. That matters because sudden power loss can interrupt in-flight writes, increasing the risk of data corruption, metadata inconsistency, or application-level transaction loss.
Q: What RAID level is recommended for this SSD?
A: For business use, RAID 1 or RAID 10 is generally recommended. These levels provide better redundancy and recovery characteristics, while avoiding the parity-write penalties common with RAID 5 or RAID 6.