1. 18-May-2006damckee@indiana.edu1 Indiana University’s Name for its Sakai Implementation Oncourse CL (Collaborative Learning) Active Users = 112,341 Sites = 65,321 Page Views = 73,955 / day Max Concurrent Sessions= 22,000+ Avg Concurrent Sessions= 5,000+

2. 18-May-2006damckee@indiana.edu2 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

3. 18-May-2006damckee@indiana.edu3 Oncourse CL is one five Virtual Data Servers residing on an IBM P5 Series Enterprise Server 16 CPUs OS is Unix AIX 5300 64 GBs of RAM

4. 18-May-2006damckee@indiana.edu4 Oncourse CL’s Virtual Data Server Logically Partitioned Minimum of 3 CPUs Maximum 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 satisfactory for 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

5. 18-May-2006damckee@indiana.edu5 Oncourse CL’s Virtual Data Server and Disk Storage IBM Shark Storage Area Network The Oracle Instance stores its data on an IBM SAN Data Server uses Multi-Threaded Shared Servers 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 Ranks and Disk Volumes. Storage is configured to allow Flashback Query/Transaction to recover data for up to seven days Configured for Raid 5 Oncourse CL Virtual Data Server

6. 18-May-2006damckee@indiana.edu6 Oncourse CL’s Application Servers and Load Balancers Service: ZXTM Model: 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 App Server is divided into Eight Virtual App Servers For a total of 16 servicing Oncourse CL

7. 18-May-2006damckee@indiana.edu7 Oncourse CL’s Virtual Oracle App Servers and Disk Storage Load Balancers NAS NetApps Network Attached Storage 7+ TBs (and Growing) for Student And Faculty File Storage Oncourse CL Virtual App Servers Servers run Redhat Linux Adv Srvr (V3), Apache 2.0.55 & Tomcat 5.5 Oncourse CL Virtual Data Server Connection Pooling So one DB connection supports many App Sessions IBM Shark Storage Area Network

8. 18-May-2006damckee@indiana.edu8 Thanks For Further Information Video: https://oncourse.iu.edu/access/content/user/lance/Public/Sakai%20is%20O ncourse%20at%20Indiana%20University.mp4