Can RAID Act As The Reliable BACKUP Solution For Linux / UNIX / Windows Server?

Q. Can I use RAID as the only backup solution under Linux? Is RAID is reliable backup solution for server?

A. Short answer – NO.

Long answer – RAID is good for improving performance. RAID also offers fault tolerance. However, I’ve seen 100% data loss under RAID 5 and RAID 10. It is recommended that you use minimum RAID 6 for mission critical applications and data. RAID 6 is extension to RAID 5. It provides protection against double disk failure. RAID 6 protects against multiple bad block failures while non-degraded mode. RAID 6 protects against a single bad block failure while operating in a degraded mode.

For 100% peace of mind and data safety, perform regular scheduled backup outside Window / UNIX / Linux server using any one of the following solution (or combination of all):

  • NAS / SAN Storage
  • Backup to 2nd server
  • Tape backup
  • Create 2nd disaster recovery site
  • Always move data offsite
  • Virtualization can be used to create quick recovery plan

Checkout all our backup related articles here and here. I also recommend following books:

Posted by: SXI ADMIN

The author is the creator of SXI LLC and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.