I ran 'diag' command to verify disk follow the below steps.
DIAG------?task selection-------ssa service aid-----Link verification
I found that there are 3 types of status. (Good, Failed and Power).
scp2: pdisk23 D69E584F 0 16 Power
scp2: pdisk19 D657E7A9 1 15 Power
scp2: pdisk28 D69E6735 2 14 Power
scp2: pdisk16 D657D9A0 3 13 Power
scp2: pdisk18 D657E76D 4 12 Power
scp2: pdisk27 06FDDC97 5 11 Good
scp2: pdisk21 D657E82E 6 10 Power
scp2: pdisk29 D69E6745 7 9 Power
scp1:ssa1:A 8 8
scp2: pdisk25 D69E58E3 9 7 Power
scp2: pdisk30 D69E67FC 10 6 Power
scp2: pdisk26 D69E591D 11 5 Power
scp2: pdisk22 D69E582D 12 4 Power
scp2: pdisk31 D69E6800 13 3 Power
scp2: pdisk17 D657E758 14 2 Power
scp2: pdisk20 D657E7F7 15 1 Power
scp2: pdisk24 D69E58DD 16 0 Power
What's the meaning of "Power" status? What's difference between good and power? Please some guys who know answer me.