New IBM VTS and ECCST tape emulation

Document ID : KB000117643
Last Modified Date : 16/10/2018
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With the new VTS system, we started to use a Data Class construct that specifies 6,000 MiB instead of the regular 4,000 MiB (ECCST). Will this change cause any problems with CA1? 
Extended Cartridge definition. They are defining 6Gbyte size cartridges instead of 4Gbyte And no, there are no problems with CA 1. Enhanced Capacity Cartridge System Tape - ECCST