SUPER MICRO Computer LSI 2108/2208 user manual RAID 60 Example, RAID RAID 6RAID

Chapter 1: Introduction to the LSI MegaRAID Software Utility

RAID 60

RAID 60 combines the features of RAID 6 and RAID 0. RAID 60 implements distributed parity (two independent parity bloks per stripe in a RAID set) and disk striping.The dual parity allows RAID 6 to survive two drive failures in each RAID 6 set without losing data. RAID 60 requires at least 8 drives. The following illustration provides a visual example of a RAID 60 virtual drive group.

Note: In the following RAID 6 illustration, the P drives represent the RAID 5 parity scheme. The Q drives represent the second set of parity drives.

RAID 60

RAID 0

RAID 6RAID 6

Drive A	Drive B	Drive C	Drive D	Drive E	Drive F	Drive G	Drive H
Segment 1	Segment 2	Parity (Q1-Q2)	Parity (P1-P2)	Segment 3	Segment 4	Parity (Q3-Q4)	Parity (P3-P4)
Segment 8	Parity (Q3-Q4)	Parity (P3-P4)	Segment 7	Segment 6	Parity (Q5-Q6)	Parity (P5-P6)	Segment 5
Parity (Q11-Q12)	Parity (P11-P12)	Segment 11	Segment 12	Parity (Q9-Q10)	Parity (P9-P10)	Segment 9	Segment 10
Parity (P15-P16)	Segment 15	Segment 16	Parity (Q15-Q16)	Parity (P13-P14)	Segment 13	Segment 14	Parity (Q13-Q14)

RAID 60 Example

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