Databases March 14, 2003

3/14/2003Implementation Review2 Goals for Database Architecture Changes Simplify hardware architecture Improve performance Improve system reliability Provide better capabilities for full load testing in development environment Improve capacity planning ability

3/14/2003Implementation Review3 Current Database Architecture Independent Sun Servers 2 Operational Database Servers  Pipeline Processing/Archive Ingest/ Distribution  4 cpu server with MTI RAID Array  Archive Catalog Browsing  2 cpu server with MTI RAID Array

3/14/2003Implementation Review4 Current Database Architecture 2 Development/Test Database Servers  Original DADS dev/test server  2 cpu server with JBOD (Just a Bunch of Disks)  Original OPUS dev/test server  2 cpu server with JBOD

3/14/2003Implementation Review5 Current Database Architecture

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3/14/2003Implementation Review8 Current Storage Issues MTI RAID Arrays – Operations  Starting to age – had planned to start replacing MTI with more current technology  Poor tools for performance monitoring JBOD (Just a Bunch of Disks) - Development  Much slower than RAID  No fault tolerance

3/14/2003Implementation Review9 Current Server Issues Sparc Servers  Highly reliable  Lack redundant hardware components  Unable to perform throughput tests on development systems since they are undersized compared to the operational servers.  No good performance monitoring tools

3/14/2003Implementation Review10 Data Processing/Ingest/Distribution DB Server Performance

3/14/2003Implementation Review11 Archive Catalog Browsing DB Server Performance

3/14/2003Implementation Review12 Archive Dev/Test DB Server Performance

3/14/2003Implementation Review13 Opus Dev/Test DB Server Performance

3/14/2003Implementation Review14 Current Database Backup Strategy Full database backups to local DLTs Tran Log dumps to local disks Operator Intensive

3/14/2003Implementation Review15 New Database Architecture Consolidate 4 servers to 3 domains on Sun Fire 15K  Domain 1 – Data Processing/ Archive Ingest/ Distribution  8 CPUs – EMC  Should provide significantly improved performance Doubles the number of CPUs Significantly more memory Faster RAID  Anticipate extra performance will be needed to handle: New Instruments Object catalogs New MAST catalogs

3/14/2003Implementation Review16 New Database Architecture Consolidate 4 servers to 3 domains on Sun Fire 15K  Domain 2 – Archive Catalog Browsing  4 CPUs – EMC  Should provide significantly improved performance Doubles the number of CPUs Significantly more memory Faster RAID  Anticipate extra performance will be needed to handle: New Instruments Object catalogs New MAST catalogs

3/14/2003Implementation Review17 New Database Architecture Consolidate 4 servers to 3 domains on Sun Fire 15K  Domain 3 – Development/Test  4 CPUs - EMC  Should provide improved performance Faster CPUs Significantly more memory RAID  Improved performance will be needed to allow more thorough throughput testing Domains can be reconfigured to provide 8 cpu test environment for full up test

3/14/2003Implementation Review18 New Database Architecture

3/14/2003Implementation Review19 New Database Architecture SUN FIRE 15K Domain Config Opus/Archive 7 Dynamically Re-Configurable Domains EMC OPUS/Archive OPS EMC Databases OPS Code Development System Test Database Test OS/Security Test

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3/14/2003Implementation Review21 New Storage Benefits EMC RAID used for both Development, Test, Ops  Same Performance across domains  EMC storage easier to configure for both System Administrators and Database Administrators  Better performance monitoring tools  EMC switch will allow failover of disks to an alternate domain

3/14/2003Implementation Review22 New Storage Benefits EMC allows for new database backup strategies  Timefinder Snapshot  Backup to Centralized tape system  May facilitate snapshot refreshes of database to development/test server

3/14/2003Implementation Review23 New Server Benefits Consolidation of Database servers  Simplifies management for both SAs and DBAs Redundant hardware systems should reduce downtime Better performance monitoring tools Domains can be reconfigured to provide extra resources on demand

3/14/2003Implementation Review24 Database Transition Plans Storage  EMC Training Underway  Testing EMC with loaner Sun 4800  How to layout database partitions  Database backup strategies  Snapshot refreshes  Backup recovery from tape

3/14/2003Implementation Review25 Database Transition Plans Sun Fire 15K Server  System Administrator Training Underway  Testing with loaner Sun 4800  Need 64 bit Sybase to utilize >4GB Memory ST-ECF had experienced problems with initial release of 64 bit Sybase under v12.0 They report having no problems with Sybase v12.5 We will run full regression test with this version.

3/14/2003Implementation Review26 Database Transition Plans Sun Fire 15K Server  Testing with Sun Fire 15K  Will set up initial configuration of Dev/Test Server using database configuration parameters that are similar to existing servers. This will allow us to duplicate current performance requirements.  We then plan to test the benefit of large amounts of memory within the database server and to further tune configuration parameters. This tuning work will not impact the rollout of the other servers, since they can be brought on-line with the initial tuning configuration.

3/14/2003Implementation Review27 Database Transition Plans Order of Migration  Development Server (Opus Dev Server)  Merge in 2nd Development/Test Server (Archive Dev Server) onto same domain  Archive Catalog Browsing Server  Data Processing/ Archive Ingest/ Distribution Server

3/14/2003Implementation Review28 Database Contingency Plans Original hardware will be kept available should it be necessary to roll back  No trade in required for this equipment Roll back would consist of a simple database load onto the original server  Roll back will be tested.

3/14/2003Implementation Review29 Database Testing and Migration Schedule