IBM Open Badge and Digital Courses IBM Open Badge: Networking on z/OS – Foundations IBM open badge for you to easily and quickly share verified proof of your achievements on networking on z/OS. View the badge (link resides outside ibm.com) IBM Open Badge: z/OS Network Security – Foundations IBM open badge for you to easily and quickly share verified proof of your achievements on z/OS network security. View the course (link resides outside ibm.com) IBM Open Badge: z/OS TCP/IP Configuration with NCA IBM open badge for you to easily and quickly share verified proof of your achievements on z/OS TCP/IP Configuration with NCA. View the badge (link resides outside ibm.com) New function APAR summaries z/OS Communications Server V2R4 New Function APAR Summary Information on z/OS Communications Server new function APARs available for z/OS V2R4. Read the documentation z/OS Communications Server V2R3 New Function APAR Summary Information on z/OS Communications Server new function APARs available for z/OS V2R3. Read the documentation z/OS Communications Server V2R2 New Function APAR Summary Information on z/OS Communications Server new function APARs available for z/OS V2R2. Read the documentation Redbooks IBM z/OS Communications Server TCP/IP Implementation -- Volume 1 of 4 Base functions, connectivity, and routing. Download the Redbook IBM z/OS Communications Server TCP/IP Implementation -- Volume 2 of 4 Standard applications. Download the Redbook IBM z/OS Communications Server TCP/IP Implementation -- Volume 3 of 4 High availability, scalability, and performance. Download the Redbook IBM z/OS Communications Server TCP/IP Implementation -- Volume 4 of 4 Security and policy-based networking. Download the Redbook Hardware and Software support for IBM Z, IBM Power and Storage Focus on keeping IBM Z infrastructure operational Proactive Support for IBM Z can help you get personalized support with priority response handling through a dedicated IBM Z Technical Account Manager (zTAM). Get Proactive Support for IBM Z (PDF, 724 KB) Upgrade warranty and maintenance for IBM Z Maintain the highest level of availability with best in-class IT support to keep your mission-critical systems running smoothly. Buy or upgrade now IDC MarketScape names IBM as a Leader in Support Services Based on the IDC study, 85% of enterprises mentioned support services as a key differentiator when choosing a vendor to purchase datacenter systems. Download the IDC report Other resources Get a personalized TCO estimate See how cost effective it is to run this software on an IBM zIIP. Try the zIIP assessment tool IBM z/OS on IBM Developer Access open source projects, developer advocates and a global community of developers. Join the community Expert resources to help you succeed Support Find solutions by using support search or open a support case. Documentation Get information about how to maintain and use the product. Community A rich community of business and technical expert blogs and forums.