E-Series, SANtricity and Related Plug-ins Discussions

What is the extra Q calculation and uses for whic raid level ?

UgurD

What is the extra Q calculation and uses for whic raid level ?  Thanks in advance. 

1 ACCEPTED SOLUTION

MitchBlackburn

The RAID level is RAID 6. RAID 6 uses two parity drives which allows the RAID group to survive two drive failures. With only one parity drive (P) we have RAID 5. When there are two parity drives (P +Q) we have RAID 6. Info on how RAID 6 works is widely available on the internet.

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2 REPLIES 2

MitchBlackburn

The RAID level is RAID 6. RAID 6 uses two parity drives which allows the RAID group to survive two drive failures. With only one parity drive (P) we have RAID 5. When there are two parity drives (P +Q) we have RAID 6. Info on how RAID 6 works is widely available on the internet.

View solution in original post

UgurD

Thank you. 

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