Transcript Do You Need To Run 24/7? • So How Do You Do System Maintenance? “Spiral Development” With Advanced Traffic Control, Inc.

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
Modified System
Tested
Version A System
As Backup
Modified System
Backup
Backup Updated
To New Version
Original System
As Backup
New Version A
Upon Failure
Modified System
Tested
Modified System
Backup
Original System
Original System
Backup
Want To Know More?
• Write or Visit Us:
Advanced Traffic Control, Inc.
4811 Lyons Technology Parkway #7
Coconut Creek, Florida, 33073
• Call Us
Telephone: (954) 428-9100
Toll-Free 1-866-242-4487 [866-atc4its]
• Check our web site
www.atc4its.com
• Email Us.
[email protected]