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Internet Data Center
Learning Tools deploys GoalView using the Application Service Provider model
(ASP). The application and data reside on highly tuned and optimized server
systems in the Learning Tools Data Center located at the Advanced Telecom
Group Internet Facility in California. The Learning Tools Data Center provides
effective security, monitoring, load balancing and scalability.
Learning Tools provides daily, weekly and monthly backups of files and
databases. Mirrored disks for the District servers and RAID 5 for all data
ensure data availability and maintenance of critical data. For additional
backup, Learning Tools uses data replication to replicate the database
contents each day to a mirrored data server in a separate off-site server
facility.
GoalView is designed using proven Microsoft multi-tier and .NET technology. The
architecture utilizes four distinct hardware and software tiers. The web
server tier utilizes the Microsoft Internet Information Server (IIS) running
on a set of load balancing web servers. The application tier implements
business rules on a set of load-balancing application servers and separate
load balancing servers run reports. The database tier is a set of clustered
servers running Microsoft SQL Server 2000. Microsoft clustering technologies
provide automatic fail-over.
GoalView server hardware is standard off-the-shelf technology available from
a wide variety of hardware vendors such as IBM, Dell, HP and Compaq. Servers
can be upgraded at any time from these or other vendors supporting Microsoft
technologies.
LTI monitors:
- System performance
- URL performance
- URL response time
- Network bandwidth for load balancing
- Hardware performance
- Key system resources
- Audit trails
- Security monitoring
- Intrusion detection
- Daily backup and Data Vault storage
- Database processes
- Data restoration processes
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The physical servers are supported by:
- Dedicated battery power system supporting Federal Telecom standards
- HVAC temperature zone control system
- Fully redundant on-premise power
- Mainframe-style building construction
- 24 x 7 secured access to building
- Concrete steel walls and entry doors
- Seismically-braced building
- Electronic locking server cabinets
- Security breach alarms
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