In a storage system, a disk device performs recovery and transfers read data to a control device, and the control device judges the validity of the recovery to prevent a transfer of erroneous data. Conjugation through this position results in spectral properties that are uniformly superior to those of conjugates of spectrally similar dyes wherein attachment is at a different position. Transmitting the paging message can include using, during a paging cycle based on the paging cycle structure, a single paging slot to transmit the paging message, where the single paging slot is associated with the two or more subscriber identities. The panel assemblies include first ends adapted to pivotally engage a rib of one member and a second end having a releasable locking mechanism adapted to engage a rib of a member.