18-May-2006 damckee@indiana.edu 1

Indiana University’s Name for its Sakai ImplementationOncourse CL (Collaborative Learning)

Active Users = 112,341Sites = 65,321Page Views = 73,955 / dayMax Concurrent Sessions = 22,000+Avg Concurrent Sessions = 5,000+

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• High Level View of Oncourse CL Production Infrastructure

• One Virtual Oracle Database Server

• One NAS (Network Attached Storage)

• One (Shared) Storage Area Network

• Sixteen Virtual App Servers

• One Load Balancer with Redundant Failover

Oncourse CL (Collaborative Learning)

A Conceptual View of the Infrastructure

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Oncourse CL is one five Virtual DataServers residing on an IBM P5 Series

Enterprise Server16 CPUs

OS is UnixAIX 5300

64 GBs of RAM

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Oncourse CL’s Virtual Data ServerLogically Partitioned Minimum of 3 CPUsMaximum of 6 CPUS

8 GBs of RAM

Virtual Server acts like a physical server in that it can be bounced, re-configured, etc without any impact to other Virtual Servers on the

Physical server. This configuration has been satisfactoryfor IU’s Current Usage Levels:

• Max Oncourse Sessions 20,000+• Average Oncourse Sessions 5,000+• Max CPUs Used 5• Average CPUs Used 2

• Typical Response Time < 2 seconds

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Oncourse CL’s Virtual Data Server and Disk StorageIBM Shark

Storage Area Network

The Oracle Instancestores its dataon an IBM SAN

Data Server usesMulti-Threaded SharedServers which support 10 Oracle sessions each.

The Database is 10g[10.1.0.5] with Automatic

Workload Repository {AWR} Activated

Data are stored across Multiple Raid Ranksand Disk Volumes. Storage is configured toallow Flashback Query/Transaction torecover data for up to seven days

Configured for Raid 5

Oncourse CL Virtual Data Server

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Oncourse CL’s Application Servers and Load Balancers

Service: ZXTMModel: HP DL385 Processors: Opteron 2@2.6GHz Memory: 2GB Disk: two 146GB SCSI (raid-1)

Active

Failover

Model: HP DL740 Processors: Xeon Eight@3GHz Memory: 48GB Disk: 200 GB of SAN storage per Physical App Server

Application Servers

Load Balancers

Each Physical AppServer is divided into Eight Virtual App Servers For a total of 16 servicingOncourse CL

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Oncourse CL’s Virtual Oracle App Servers and Disk StorageLoad Balancers

NAS

NetApps Network Attached Storage7+ TBs (and Growing) for Student And Faculty File StorageO

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Servers runRedhat LinuxAdv Srvr (V3),Apache 2.0.55 & Tomcat 5.5

Oncourse CL Virtual Data Server

Connection Pooling So one DB connectionsupports many AppSessions

IBM SharkStorage Area Network

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ThanksFor Further InformationVideo:

https://oncourse.iu.edu/access/content/user/lance/Public/Sakai%20is%20Oncourse%20at%20Indiana%20University.mp4