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| Brand | Micron |
|---|---|
| Model | M550 |
| Capacity | 256GB |
| Usage Class | Client |
| Host Interface | SATA 6Gb/s |
|---|---|
| Total Interface Bandwidth | 6 Gb/s |
| Form Factor | 2.5" 7mm |
|---|
| NAND Flash | 2D MLC |
|---|---|
| Drive Writes Per Day | |
| Total Bytes Written | 72 TBW |
| Sequential Read | 550 MB/s |
|---|---|
| Sequential Write | 500 MB/s |
| Random Read IOPS | 90000 |
| Random Write IOPS | 80000 |
| Average Latency | μs |
| Mean Time Between Failures | 1.5 Million Hours |
|---|---|
| Uncorrectable Bit Error Rate | 1.0×10⁻¹⁷ |
| Power Loss Protection | Yes |
The MTFDDAK256MAY-1AH12ABYY (M550 256GB) is best suited for read-intensive boot, caching, and edge-server workloads that need consistent SATA 6Gb/s performance, combining 550/500 MB/s sequential throughput with up to 90K/80K IOPS for fast application and OS responsiveness. Its 2D MLC NAND and 72 TBW endurance give it a durability advantage over typical client-grade TLC SATA SSDs in the same class, making it a stronger choice for 24/7 systems where predictable latency and sustained write stability matter.
With a rated endurance of 72 TBW, the MTFDDAK256MAY-1AH12ABYY is well suited for typical OS boot, office, and general embedded workloads, where daily write volumes are usually modest. In practical terms, for a 256GB system drive used mainly for operating system, application, and log storage, this endurance level can comfortably support many years of normal operation, often making it a worry-free choice for long service life deployments. From a reliability perspective, built-in power loss protection helps safeguard in-flight data and metadata during unexpected power interruptions, reducing the risk of corruption and improving system stability. Its UBER rating of 1.0E-15, together with a 1.5 million hour MTBF specification, reflects a design focused on dependable data integrity and predictable long-term operation in business and industrial environments.
1. The SATA 6Gb/s interface enables seamless deployment in mainstream enterprise servers and storage arrays, delivering a cost-effective upgrade path without changing existing backplanes or controllers.
2. With 550 MB/s sequential read performance, the drive speeds up OS boot, database scans, and large-file retrieval in read-intensive business workloads.
3. Its 90,000 K IOPS random read capability helps virtualized environments and high-concurrency applications respond faster under heavy small-block access patterns.
4. Rated for [dwpd] DWPD, this SSD is built to sustain predictable write pressure over its service life, reducing replacement frequency in always-on enterprise operations.
5. Combining 2D MLC NAND with a typical latency of [latency] µs, it provides the consistency, flash endurance, and low response time needed for mission-critical enterprise storage.
Lower capacity reference: 128GB Higher capacity reference: 512GB In this product family, the 256GB model is the practical sweet spot. Compared with the 128GB version, it gives noticeably better capacity headroom for OS images, logs, metadata, and short-term workload growth, reducing the risk of early space pressure. Compared with the 512GB option, it keeps acquisition cost lower while delivering broadly similar enterprise-class sequential throughput and random IOPS in typical deployments. This makes 256GB especially suitable for small-to-mid virtualization clusters, such as hosting boot and utility volumes for around 30 to 50 infrastructure or application VMs.
Q: Is MTFDDAK256MAY-1AH12ABYY suitable for a write-heavy database server?
A: Not ideally. Although its 2D MLC NAND and PLP improve reliability, the 72 TBW endurance on a 256GB drive is relatively modest, making it better for read-intensive or light mixed workloads.
Q: How many full drive writes per day can it actually endure over its warranty period?
A: Based on 72 TBW and 256GB capacity, it supports about 281 full-drive writes in total. Over a typical 5-year warranty, that is approximately 0.15 drive writes per day.
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 mapping tables during sudden outages, reducing corruption risk and improving data integrity in enterprise environments.
Q: What RAID level is recommended for this SSD?
A: For enterprise use, RAID 1 is suitable for redundancy, while RAID 10 is usually the best choice for database workloads because it balances performance, fault tolerance, and rebuild reliability.