Use non-Y2K compliant software at your own risk. MRS stands for Media Recognition System. The latest generation of DDS equipment is designed to detect cartridges having MRS striped splicing tape. This tells the drive that it is working with media certified for digital data storage, thereby ensuring safe data storage for computer usage. DDS tapes without MRS stripes become read-only.
Conventional subsystems read and write to both tape types.
A DDS DAT drive requires a minimum firmware revision of 2.96. If S4 is ON, the drive reads or writes both MRS and non-MRS 4mm DAT media. If S4 is OFF, the drive only writes to MRS media. The drive reports a check condition if the media is non-data grade, and the sense key will be 07, Data Protect. The original production run of the Peregrine drive did not include the dipswitch option.