RAID on Dedicated Servers
RAID (Redundant Array of Independent Disks) protects your data by spreading or mirroring it across multiple drives. Understanding your RAID configuration is important for backup planning.
RAID Levels Available
RAID 0 — Striping (No redundancy)
Data is split across two drives for maximum performance. If either drive fails, all data is lost. Not recommended for production without separate backups.
RAID 1 — Mirroring
Data is written identically to two drives. If one fails, the other has a complete copy. Good for data protection with a small storage overhead.
RAID 10 — Stripe + Mirror
Combines the speed of RAID 0 with the redundancy of RAID 1 across four drives. The best balance of performance and protection for production workloads.
Does RAID Replace Backups?
No. RAID protects against hardware failure but does not protect against accidental deletion, software bugs, or ransomware. Always maintain separate offsite backups.
Checking Your RAID Status (Linux)
# Software RAID
cat /proc/mdstat
# Hardware RAID (MegaRAID)
megacli -LDInfo -Lall -aALLWhat Happens When a Drive Fails?
If a drive fails in a RAID 1 or RAID 10 array, the server continues running in degraded mode. Open a high-priority support ticket immediately — our team will arrange a drive replacement and array rebuild.