raidDiskState 1.3.6.1.4.1.2620.1.6.7.7.2.1.9

Raid disk state (can get more then one): ONLINE(0x00), MISSING(0x01), NOT_COMPATIBLE(0x02), DISC_FAILED(0x03), INITIALIZING(0x04), OFFLINE_REQUESTED(0x05), FAILED_REQUESTED(0x06), UNCONFIGURED_GOOD_SPUN_UP(0x07), UNCONFIGURED_GOOD_SPUN_DOWN (0x08), UNCONFIGURED_BAD(0x09), HOTSPARE(0x0A), DRIVE_OFFLINE(0x0B), REBUILD(0x0C), FAILED(0x0D), COPYBACK(0x0F), OTHER_OFFLINE(0xFF) or UNKNOWN (other)