# 💾 Storage Drives

*Physical storage devices and drive management in the homelab*

## Overview
Comprehensive inventory and management of all storage drives across the homelab infrastructure.

## Drive Categories

### NAS Drives (Primary Storage)

#### WD Red Pro Series
- **Model**: WD Red Pro 14TB (WD141KFGX)
- **Quantity**: 8 drives in Atlantis NAS
- **Technology**: CMR (Conventional Magnetic Recording)
- **Warranty**: 5 years
- **MTBF**: 2.5M hours
- **Workload**: 550TB/year

#### Seagate IronWolf Pro
- **Model**: Various capacities (8TB-18TB)
- **Technology**: CMR recording
- **Features**: AgileArray technology
- **Health Management**: IronWolf Health Management

### SSD Storage (Performance)

#### NVMe SSDs
- **Samsung 980 Pro**: 1TB/2TB capacities
- **WD Black SN850**: High-performance gaming
- **Crucial P5 Plus**: Cost-effective performance
- **Use Cases**: OS drives, databases, caching

#### SATA SSDs
- **Samsung 870 EVO**: General purpose storage
- **Crucial MX4**: Budget-friendly option
- **WD Blue**: Reliable everyday storage
- **Use Cases**: VM storage, application data

### Backup Drives

#### External USB Drives
- **WD Elements**: 8TB-14TB external drives
- **Seagate Backup Plus**: Portable backup solutions
- **Use Cases**: Offline backups, data migration

#### Archive Storage
- **WD Gold**: Enterprise-grade archival
- **Seagate Exos**: High-capacity enterprise
- **Use Cases**: Long-term data retention

## Drive Health Monitoring

### SMART Monitoring
- **Automated checks**: Daily SMART data collection
- **Threshold alerts**: Proactive failure detection
- **Historical tracking**: Performance degradation trends

### Temperature Management
- **Thermal monitoring**: Continuous temperature tracking
- **Cooling optimization**: Fan curve adjustments
- **Alert thresholds**: Overheating prevention

### Performance Metrics
- **Read/write speeds**: Throughput monitoring
- **IOPS tracking**: Input/output operations
- **Latency measurement**: Response time analysis

## Drive Replacement Procedures

### Failure Detection
1. **SMART alerts** indicate potential failure
2. **Performance degradation** monitoring
3. **Error rate increases** in system logs

### Replacement Process
1. **Order replacement drive** (same model preferred)
2. **Schedule maintenance window**
3. **Hot-swap procedure** (if supported)
4. **RAID rebuild process**
5. **Verification testing**

### Data Recovery
- **RAID redundancy** for fault tolerance
- **Backup restoration** if needed
- **Professional recovery** for critical data

## Storage Optimization

### RAID Configuration
- **RAID 6**: Dual parity for fault tolerance
- **RAID 10**: Performance with redundancy
- **RAID 1**: Simple mirroring for critical data

### Caching Strategies
- **SSD caching**: Accelerate HDD performance
- **Read caching**: Frequently accessed data
- **Write caching**: Improve write performance

### Tiered Storage
- **Hot data**: NVMe SSD storage
- **Warm data**: SATA SSD storage
- **Cold data**: HDD archival storage

## Capacity Planning

### Growth Projections
- **Historical usage**: Analyze growth trends
- **Service expansion**: Plan for new services
- **Backup requirements**: Account for redundancy

### Procurement Planning
- **Bulk purchasing**: Cost optimization
- **Technology refresh**: Upgrade cycles
- **Compatibility**: Ensure system compatibility

## Drive Inventory Management

### Asset Tracking
- **Serial numbers**: Complete inventory database
- **Purchase dates**: Warranty tracking
- **Installation locations**: Physical mapping

### Warranty Management
- **Warranty periods**: Track expiration dates
- **RMA procedures**: Return merchandise authorization
- **Replacement tracking**: Monitor replacements

## Best Practices

### Installation
- **Anti-static procedures**: Prevent ESD damage
- **Proper mounting**: Secure installation
- **Cable management**: Optimize airflow

### Maintenance
- **Regular cleaning**: Dust removal
- **Firmware updates**: Keep drives current
- **Performance testing**: Periodic benchmarks

### Security
- **Data encryption**: Protect sensitive data
- **Secure disposal**: Proper drive wiping
- **Physical security**: Prevent unauthorized access

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**Status**: ✅ All storage drives monitored with proactive health management