Storage - Tagged Questions

• What should i do if my gmail is full?
• How to activate sd card in redmi 9a?
• Why is the sd card not formatting?
• My phone's SD card is full and I'm getting storage warnings. What's the safest procedure to free up space—should I delete files directly format the card or transfer data to a computer first?
• I'm looking to upgrade my computer's storage but I'm confused by the terminology. What is the actual performance difference between an NVMe drive and a standard SATA SSD?
• In computer architecture could you clearly differentiate primary memory (RAM) from secondary memory (HDD/SSD) in terms of speed volatility cost and their specific roles during program execution?