Geek ONTAP: Difference Between RAID-DP & RAID-6

Tuesday, February 17, 2009

Difference Between RAID-DP & RAID-6

I often get the question...

"What's the difference between NetApp RAID-DP vs. other RAID-6 implimentations?"

Answer: Most storage vendor's RAID-6 implementations incur an I/O performance penalty as a result of introducing an additional parity block. RAID-DP is optimized to reduce read I/Os, due to the way NetApp handles parity write operations.

RAID-10 performance at the price-point of RAID-5.

Simply beautiful !!

Bio

NetApp Technical Lead at Arrow Electronics, focused on technical partner enablement throughout North America. Strong enterprise storage background: specializing in remote replication, data protection, and storage networking.

Brian is the author of LOGnomics: Understanding Log-structured File Systems, awarded as a NetApp Toaster in 2008, honored in President's Club 2007, and featured on the cover of Storage Magazine in May 2006.

Prior to joining Arrow, Brian was a storage administrator, spent several years as an application engineer, and served as a configuration management analyst at a large consulting company in Washington, DC.

In his free time, Brian enjoys playing piano, golf, and travel. Brian is married with two children and lives in Atlanta, GA.