Drive Arrays and Fault Tolerance

RAID 1+0—Drive Mirroring

In this configuration, data is duplicated to a second drive.

B1B1

B2B2

B3B3

B4B4

P1P2

Figure D-5: Drive mirroring of P1 to P2

When the array has more than two physical drives, drives are mirrored in pairs.

S1

B1

B2

B3

B4

S2

B5

B6

B7

B8

 

P1

P2

P3

P4

 

P5

P6

P7

P8

S1

B1

B2

B3

B4

S2

B5

B6

B7

B8

Figure D-6: Mirroring with more than two physical drives in the array

D-6

HP Smart Array 641/642 Controller User Guide