RAID
A method of combining multiple disks into a single unit for increased reliability or performance.
What does it mean RAID?
RAID allows a server to continue functioning if one disk fails. Data is distributed across multiple disks so that a single failure does not result in data loss.
The most common implementations are RAID 1 (mirroring of two disks), RAID 5, and RAID 10, which combines reliability and speed.
Important: RAID is not a backup. It protects against disk failure, but not against deletion, ransomware, or user error.
Practical examples
A disk fails in a company server's RAID 10 array; the system continues to operate seamlessly, and the disk is replaced during business hours without downtime.
Business relevance
A properly selected RAID implementation, combined with disk health monitoring, prevents unplanned downtime that would otherwise halt work for several hours.
Common mistakes
The most common mistakes are a lack of monitoring (a failed disk remains unnoticed for months), a missing spare disk, and the misconception that RAID replaces backups.
How VitalIT helps
At VitalIT, we take care of servers, virtualization, backups, and system monitoring. Learn more on the IT infrastructure page.
Why is this important for businesses?
A properly selected RAID implementation, combined with disk health monitoring, prevents unplanned downtime that would otherwise halt work for several hours.
Where does this appear in practice?
A disk fails in a company server's RAID 10 array; the system continues to operate seamlessly, and the disk is replaced during business hours without downtime.
Most common problems or errors
The most common mistakes are a lack of monitoring (a failed disk remains unnoticed for months), a missing spare disk, and the misconception that RAID replaces backups.
Kako pri tem pomaga VitalIT
At VitalIT, we take care of servers, virtualization, backups, and system monitoring. Learn more on the [IT infrastructure](/en/services/it-infrastruktura) page.
Related terms
Related Services
Frequently asked questions
- Does RAID replace backups?
- No. It only protects against disk failure, not against deletion or infection.
- Which implementation is recommended?
- RAID 10 is most commonly recommended for servers due to its balance between speed and reliability.
- How do we know if a disk has failed?
- Through a monitoring system that tracks the status of the array and sends an alert.