FIELD: computer engineering. SUBSTANCE: periphery of fixed holding disk 6 mounts N scanning optical laser heads 3 for data recording and/or reproducing. Data medium provided with rotating actuator 2 is essentially part of hollow torus in the form of ring with concave inner surface carrying recording layer. Medium embraces holding disk and both are joined together through sliding and rocking members. Recording layer of medium 1 is optically coupled with optical heads 3. EFFECT: improved design. 1 dwg
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