“PLC Historical Data Management: Four Major Storage Optimization Techniques, Saving 70% of Storage Space!”
SD Card: Suitable for small to medium-sized projects, low cost but limited capacity (recommended 64GB industrial-grade card).
USB Storage: Plug and play, suitable for temporary backups (choose military-grade products with anti-magnetic and shock-resistant features).
Industrial Hard Drive: High reliability, suitable for long-term storage (recommended Seagate IronWolf Pro 8TB, with three years of free data recovery).
3️⃣ Database Integration Layer: Enabling data to “go to the cloud”
Hot Standby: Real-time data synchronization between the main PLC and backup PLC, reducing downtime from 4 hours per occurrence to 0.5 hours per occurrence in a steel plant.
Cloud Synchronization: Achieving off-site backups through Huawei Cloud or Alibaba Cloud, saving a pharmaceutical company 500,000 yuan in hardware costs annually.
Three, Scene-Specific Solutions: Targeted approaches yield effective results
Data storage is not the end, but the starting point of industrial intelligence. Remember: the cost of prevention is always less than the cost of accidents!