Software update
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This document discusses software updates and the importance of minimizing downtime when applying them. It notes that software will need changes over time to fix faults or add features. While the system is unavailable during updates, high availability is important. The document suggests designing systems that can apply updates with little or no downtime by allowing new software versions to run alongside old ones or replacing only specific parts of an application. It also stresses testing compatibility and fault tolerance when planning for updatable systems.
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Software update
- 2. maybe your are sw engineering…
- 4. there will be faults in the software… need to change at some point in the future!
- 5. to add features or treat a fault
- 6. The system is unavailable while it is being stopped and restarted to install new software
- 7. Availability
- 8. The system and its applications must not stop operating, not even to install new sw
- 9. a system needs before deploying the first time to minimize the time spent installing new software
- 10. how to do it after deploying the first time? you need to add the capability to make change capability
- 11. slightly better situation is that the new software can overlap with the old version OLD NEW
- 12. Sometimes you can replace only specific parts of an application : Create as small an update as your tools and what needs to be patched allow
- 13. Different levels of the system may needing different capability to support the updates Application Firmware
- 14. new capabilities sometimes means changed interfaces : to support interactions with other systems that have not been updated. : usually means treating the next version’s special attributes as no-ops and ignoring them
- 15. Updating a running system… : usually to initiate the application of the update : repetitive to the operators
- 16. You already have FAULT TOLERANT MINDSET make enough Capability check your System( firmware / application ) check Compatible
- 17. Your system must be changed later So, reduce planned downtime
- 18. THANK YOU!