Micron 5400 PRO 240GB

The Micron 5400 PRO 240GB integrates Micron’s 176-layer 3D TLC NAND into a SATA architecture, using a proprietary Micron controller with DRAM caching to manage sustained I/O. The drive prioritizes endurance and steady-state consistency over burst performance. Due to the limited die count inherent to the 240GB capacity, write saturation is reached quickly, resulting in lower sequential write throughput compared to higher-capacity SKUs in the 5400 family. The drive includes Power Loss Protection circuitry on the PCB to preserve data-in-flight during power failures. The SATA III interface is a hard bottleneck, so the primary utility of this drive is its high endurance (typically 1.5 DWPD) and predictable latency curves rather than raw bandwidth.

Key Specifications

• Interface: SATA III (6 Gb/s) / AHCI
• Form Factor: M.2 2280
• Controller: Micron Custom Architecture (SATA)
• NAND Flash: Micron 176-layer 3D TLC
• Sequential Read/Write: 540 MB/s / 350 MB/s
• Security: TCG Enterprise / Opal 2.0 Self-Encrypting Drive (SED) capabilities
• Reliability: Hardware-based Power Loss Protection (PLP)
• Endurance: typically 1.5 DWPD

Hardware Alternatives

• Samsung PM893: The primary direct competitor in the enterprise SATA space, utilizing Samsung’s proprietary controller and V-NAND stack for read-intensive data center, boot drive, and edge server workloads.
• Intel (Solidigm) D3-S4520: A close functional alternative offering similar endurance characteristics and the same SATA performance limitations, often cross-shopped for legacy server maintenance and boot volumes.
• Crucial MX500: A consumer-segment relative that may share similar NAND generation technology but lacks enterprise-tuned firmware, PLP capacitors, and heavy-duty error correction capabilities.