What Does RAID 6E Mean?

RAID 6E is a type of RAID 6 configuration with an integrated hot spare drive in which the spare drive is active in the block rotation scheme.


The E in RAID 6E stands for "extended" as it adds on or extends the capabilities of standard RAID 6. It is part of the overall RAID operations and can be used for input/output operations.

Techopedia Explains RAID 6E

The addition of a hot spare drive enables increased performance and reliability by replacing a failed drive.. In the beginning, spare drive could only be used per array, not with other RAID arrays. However, more recent advances in SAN architecture and controller design have made it possible for several arrays to share hot spares.


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Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…