CA Cloud Storage for System z uses CTC adapters to communicate between CA Vtape on z/OS and a CA Cloud Storage for System z server running on Linux on System z. CTC lets the data be moved between hosts in a way that is fast and uses the fewest general-processor resources.
Installations that have a FICON channel connected to the I/O fabric can have CTC connections set up with no additional cost. Installations no longer need to dedicate channel path (CHPID) resources to the CTC function. you can make CTC connections between channels by going through a FICON Director. The CTC adapter function is implemented logically between connecting channels and resides in the FICON channel.
CA Cloud Storage for System z combines multiple CTC addresses between hosts to facilitate multiplexing read and write operations on behalf of a variable number of virtual tape drives. CA Cloud Storage for System z requires two CTC addresses between each instance of CA Vtape on z/OS and Linux on System z.
The following diagram shows a single z/OS LPAR communicating with a Linux on System z host:
The following is a diagram of two z/OS LPARs communicating with a single Linux on System z host:
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