This topic examines specific issues that are involved when using tape media to transfer data between computer systems.
The most reliable method of transferring data between an mvBase system and a system operating under another manufacturer’s version of the MultiValue Operating System is using T-DUMP to create the tape and T-LOAD to restore it. As a rule, a tape block size of 512 bytes is recommended. This block size is the minimum size of memory buffers in MultiValue machines, and assures backward compatibility, although 4096 is sometimes used also. When loading a tape onto an mvBase system, use T-READ to read the label and re-attach the tape using the correct block size. It is also a good idea to suppress the tape label when making the tape, as tape labels vary between different versions and releases.
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