In a disc array apparatus having a plurality of disc units, and a plurality of first connectors, each of which disc units includes a disc casing surrounding at least one recording disc rotatable therein on a rotatable axis, a casing holder on which the disk casing is mounted, and a second connector (detachably) connectable to corresponding one of the first connectors so that at least an electric connection between the disc casing and the corresponding one of the first connectors is capable of being formed through the second connector, the disk casing is connected to the casing holder in such a manner that a heat energy generated for at least one of recording an information onto the recording disc and reading out the information from the recording disk is capable of transferring from the disk casing to the casing holder.

 
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< Recording/reproducing apparatus and method of measuring a parameter

> Open loop Ka calibration with low frequency compensation

> Recording disk drive having shroud

~ 00554