1-6Compaq DAT AutoLoader Reference Guide
DDS Logo Media
To identify computer-grade DDS media easily, look for the DDS logos (See Figure 1-2), including ! DDS-1, " DDS-2, # DDS-3, and $DDS-4. These indicate that the media meets the DDS specifications laid down by the ECMA, ISO/IEC and ANSI standards.
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Figure 1-2. DDS Logo Media
The Media Recognition System (MRS) enables drives to identify DDS-grade media. DDS MRS cassettes have a series of stripes on the transparent leader at the beginning of the cassette. The drive can be configured to treat non-MRS cassettes as write-protected. In other words, the drive is only allowed to read non-MRS cassettes, not write to them.
