SDSI Modernization Guide
SDSI is a sharing product by Legent. Explore technical details, modernization strategies, and migration paths below.
Product Overview
SDSI (Shared Dataset Integrity) addressed the challenge of sharing datasets and files across multiple MVS systems without relying on hardware RESERVEs.
SDSI was eventually integrated into CA MIM, incorporating STAM (Shared Tape Allocation Manager) and SCON (Shared Console) functionalities, offering a more comprehensive system management solution. Due to its integration into CA MIM and subsequent discontinuation as a standalone product, direct commands and APIs are no longer available.
Modernization Strategies
Rehost
- Timeline:
- 6-12 months
Lift-and-shift to cloud infrastructure with minimal code changes. Fast migration with lower risk.
Refactor (Recommended)
- Timeline:
- 18-24 months
Optimize application architecture for cloud while preserving business logic. Best ROI long-term.
Replatform
- Timeline:
- 3-5 years
Complete rewrite to cloud-native architecture with microservices and modern tech stack.
Frequently Asked Questions
General
What was the primary function of SDSI?
SDSI aimed to provide dataset and file sharing capabilities across MVS systems, eliminating the need for hardware RESERVEs. It functioned similarly to GRS, facilitating coordinated data access.
Can you describe the architecture of SDSI?
SDSI's architecture involved components for inter-system communication and resource management. These components coordinated access to datasets and files, ensuring data integrity across the MVS environment.
How was SDSI related to CA MIM, STAM, and SCON?
SDSI was eventually integrated into CA MIM, incorporating STAM (Shared Tape Allocation Manager) and SCON (Shared Console) functionalities. This integration provided a more comprehensive system management solution.
Technical
What are some common commands and their syntax in SDSI?
Specific commands and syntax for SDSI are not available due to its discontinued status and integration into CA MIM. Documentation from CA MIM might contain related functionalities, but direct SDSI commands are no longer applicable.
What types of APIs did SDSI expose?
Details on SDSI's APIs and integration methods are unavailable. As it was integrated into CA MIM, any API-related functionalities would be exposed through CA MIM's interfaces, if applicable.
What were the main system components of SDSI?
The specific components of SDSI are not documented in detail. However, it likely included modules for communication, resource locking, and data access coordination across MVS systems.
Business Value
What business value did SDSI provide?
SDSI aimed to improve data sharing efficiency and reduce contention across MVS systems by eliminating the need for hardware RESERVEs. This resulted in better resource utilization and potentially faster processing times.
How did SDSI reduce costs?
By providing a software-based solution for data sharing, SDSI reduced the reliance on hardware-based locking mechanisms. This could lead to cost savings and improved flexibility in managing shared resources.
Security
What specific security features did SDSI offer?
Specific security features of SDSI are not available. Security would likely have been integrated with the MVS security infrastructure, such as RACF, ACF2, or Top Secret.
What access control model did SDSI use?
Details on SDSI's access control model are unavailable. It would likely have leveraged MVS security features to control access to shared datasets and files.
Operations
What administrative interfaces were available for SDSI?
Administrative interfaces for SDSI are not available. Administration would likely have been performed through MVS system commands or potentially through CA MIM after its integration.
What monitoring and logging capabilities did SDSI have?
Monitoring and logging capabilities for SDSI are not documented. These functions might have been integrated into MVS system logging or CA MIM's monitoring tools.
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