do you need to run 24/7? so how do you do system maintenance? “spiral development” with advanced...
TRANSCRIPT
Do You Need To Run 24/7?
• So How Do You Do System Maintenance?
“Spiral Development”
With Advanced Traffic Control, Inc.
Needed: A Development Strategy That Accounts For Errors
• Maintenance changes to software that aren’t perfect the first time
• Device replacements with newer versions that don’t run with the old drivers
• “Service Packs” that do more harm than good.
• Software upgrades that won’t read old files.
You’re Going To Need More Than One System.
• These errors will cause downtime, because even a system reboot causes significant downtime.
• These errors will cause an indeterminate amount of downtime.
The Problem With Hardware Fault Tolerance
• Updates to hardware fault tolerant systems by definition effect the entire configuration.
• The entire configuration looks like a single computer, so a “Blue Screen Of Death” is still a fatal system error.
Spiral Development
Original SystemOriginal System
Backup
Modified SystemBackup
Modified SystemTested
New Version A
Original SystemAs Backup
Backup UpdatedTo New Version
Modified SystemBackup
Modified SystemTested
Version A SystemAs Backup
Upon Failure
Controlled
Failover
ControlledFailover
Want To Know More?• Write or Visit Us:Advanced Traffic Control, Inc.4811 Lyons Technology Parkway #7Coconut Creek, Florida, 33073• Call UsTelephone: (954) 428-9100 Toll-Free 1-866-242-4487 [866-atc4its]• Check our web sitewww.atc4its.com• Email [email protected]