🛡️ RAID 6 is a storage configuration designed for high fault tolerance, making it ideal for environments where data integrity is critical. Think of it as RAID 5 with an extra layer of protection.

⚙️ How RAID 6 Works

• Striping with dual parity: Like RAID 5, data is striped across multiple drives, but RAID 6 stores two sets of parity information.
• Minimum of 4 drives: You need at least four disks to implement RAID 6.
• Survives two drive failures: Even if two disks fail simultaneously, your data remains safe and recoverable.

📈 Benefits

• Excellent fault tolerance: Can handle two disk failures without data loss.
• Good read performance: Data is striped, allowing parallel access across drives.
• Reliable for large arrays: Especially useful in setups with many drives where the risk of multiple failures is higher.

⚠️ Drawbacks

• Slower write speeds: Calculating and writing two parity blocks adds overhead.
• Reduced usable capacity: You lose the equivalent of two drives to parity.
• Complex rebuilds: Reconstructing data after a failure can be time-consuming and stressful on remaining drives.

🧪 Ideal Use Cases

• Enterprise servers
• Data archiving
• Backup systems
• Mission-critical applications