It is possible to recover data from a failed RAID 5 server. RAID stands for redundant array of independent discs, operating through the functionality of individual drives.

RAID arrays present a more complex challenge when it comes to restoring lost data.

RAID systems are a configuration of multiple disk drives that present themselves to an operating system as a single data storage medium. The technique was invented in the late 1980s and continues to be used extensively today. 

The term RAID is an acronym for "Redundant Array of Independent Disks" or, in other circles, a "Redundant Array of Inexpensive Disks.” (These terms should not be confused with JBOD, which means “Just a Bunch of Disks.”