Version 6.9 of SCATS has recently been released by the Roads and Maritime Services Authority of NSW, Australia with a new set of features aimed at ensuring that Traffic Management Centres that use SCATS have continued of control of their road network by having SCATS capable of switching from a primary server to a backup server very quickly.
This is known as the SCATS High Availaibility topology and is available on this version running on an MS SQL Server Database. This high availability capability can be performed on different LAN/WAN topologies and using SAN (Storage Area Network) systems.
So all the intersections that are connected to the main SCATS Regional Computers can be accessed and controlled by a second set of SCATS Regional Computers (clearly not at the same time) in the event of failover to the backup SCATS system with no interruption of visibility.
In the field the situation changes and SCATS allows for this capability as shown in the diagram below:
SCATS now can be run within a virtualized environment such as VMWars' ESX Server and allow systems to be migrated in the event of a disaster at a Traffic Management Centre to an alternate Disaster Recovery Centre (DRC).
This is now possible as the SCATS Licensing scheme is now network centric instead of being dongle centric and this allows implementers a great deal more flexibility.
For more information about SCATS and the new features please visit ATC's website below:
SCATS V6.9 Failover Capability and Virtualisation
SCATS Failover Redundancy
This is known as the SCATS High Availaibility topology and is available on this version running on an MS SQL Server Database. This high availability capability can be performed on different LAN/WAN topologies and using SAN (Storage Area Network) systems.
So all the intersections that are connected to the main SCATS Regional Computers can be accessed and controlled by a second set of SCATS Regional Computers (clearly not at the same time) in the event of failover to the backup SCATS system with no interruption of visibility.
 |
| SCATS Failover Block Diagram |
 |
| Traffic Signal Controller linked to Main and Standby SCATS Systems |
Virtualization
Virtual machines and virtualization of servers has hit the mainstream in terms of modern IT systems and this means being able to create highly resilient server systems for whatever the application is.SCATS now can be run within a virtualized environment such as VMWars' ESX Server and allow systems to be migrated in the event of a disaster at a Traffic Management Centre to an alternate Disaster Recovery Centre (DRC).
This is now possible as the SCATS Licensing scheme is now network centric instead of being dongle centric and this allows implementers a great deal more flexibility.
For more information about SCATS and the new features please visit ATC's website below:
SCATS V6.9 Failover Capability and Virtualisation
Very interesting. Just another example of how important disaster recovery services are.
ReplyDeleteMany such management systems are becoming critical for many urban cities and this simply ensures that road networks are both visible at all times and controllable.
ReplyDeleteVery great post.I simply stumbled upon your blog and wanted to say that I have really enjoyed browsing your weblog posts.After all I’ll be subscribing scats v brings disaster recovery on your feed and I am hoping you write again very soon.
ReplyDelete