Datacom Compatibility with z/EDC Hardware Compression

Products

• Datacom
• DATACOM - AD
• CIS
• COMMON SERVICES FOR Z/OS
• 90S SERVICES
• DATABASE MANAGEMENT SOLUTIONS FOR DB2 FOR Z/OS
• COMMON PRODUCT SERVICES COMPONENT
• Common Services
• CA ECOMETER SERVER COMPONENT FOC
• Easytrieve Report Generator for Common Services
• INFOCAI MAINTENANCE
• IPC
• UNICENTER JCLCHECK COMMON COMPONENT
• Mainframe VM Product Manager
• CHORUS SOFTWARE MANAGER
• CA ON DEMAND PORTAL
• CA Service Desk Manager - Unified Self Service
• PAM CLIENT FOR LINUX ON MAINFRAME
• MAINFRAME CONNECTOR FOR LINUX ON MAINFRAME
• GRAPHICAL MANAGEMENT INTERFACE
• WEB ADMINISTRATOR FOR TOP SECRET
• Xpertware

Issue/Introduction

Is Datacom data eligible to take advantage of z/EDC hardware compression?
 

Environment

z/OS

 

Resolution

z/EDC is a hardware compression and is not suitable for Datacom/DB file due to Data Dictionary Building Block (DBB) overhead paired for each block.
Benefits are realized with large Block Sizes such as 4K. 
 

Additional Information

If you are using the CA Datacom/DB Presspack component, you can generate your RDT with METHOD=ZL to exploit the Hardware Compression. 
 
For more information on the Presspack component, refer to CA Datacom Core - 15.1 and search for ‘presspack’.