A wafer processing method transfers an optical device layer in an optical device wafer to a transfer substrate. The apparatus comprises a first generally stiff member for positioning between a mattress and box springs of a bed. The optional broad spectrum antimicrobial agent may be a synthetic broad spectrum antimicrobial agent, or a natural broad spectrum antimicrobial agent such as a botanical extract. The complete, updated stripe is thus formed in a single buffer for parity calculations and write to the disk array. The executed procedure decides to make the switch.