Storage
🗂️ 1. Categories of Storage 🔹 Primary Storage (Volatile) 🔹 Secondary Storage (Non-Volatile) 🔹 Tertiary & Offline Storage 🔹 Cloud Storage ⚙️ 2. Key Characteristics Feature HDD SSD RAM Cloud Volatility Non-volatile Non-volatile Volatile Non-volatile Speed Slow (100 MB/s) Fast (500 MB/s–7 GB/s) Very fast (10–100 GB/s) Depends on internet Cost per GB Low Medium–High High Subscription-based Durability Mechanical wear No moving parts Not for storage Depends on provider Use Case Mass storage OS, apps, games Active processing Backup, sync, access anywhere 🧠 3. Storage Hierarchy (Fastest to Slowest) 📦 4. Storage Capacity Units
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