Can one export directly to a tape drive?

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One can use a tape device name instead of a normal file name. When using a device, one also needs to specify the VOLSIZE= parameter. Look at this example:

exp userid/password file=/dev/rmt0 table=emp volsize=1.2G

Note: The volume size is a number ending with a "m", "k", or "b" (M, K, or B). The default is bytes.