1. Managing Work in the New Computing Environment March 14, 2003
Will Dower
Implementation Review

2. Implementation Review
Overview
Workgroup Access Control Philosophy
Introduce workgroups moving to the new backend architecture
Map workgroup interactions on the current system
Map workgroup interactions onto Sun Fire 15K domains
Workgroup Implementation Challenges
Prescription for Meeting Workgroup Challenges
Implementation Review

3. Workgroup Access Control Philosophy
Access to Server and SAN resources should maximize the useful work accomplished irrespective of artificial organizational boundaries.
Access to Server and SAN resources should minimize risk to all users of the entire system and to the STScI and its computing partners.
Implementation Review

4. STScI Data Processing Work Groups
Operations and Data Management Division (ODM)
Science Data Processing (OPUS)
Engineering Data Processing System (OPUS)
Data Distribution (DADS & OTFR – database server ZEPPO)
Archive Ingest (OPUS & NSA – database server CATLOG)
Engineering and Software Services (ESS)
Software development and testing (database server ROBBIE)
Database development and management
Instruments Division (INS)
Calibration plan development and execution
Data analysis and calibration reference data production
Center for Process and Technology (CPT)
Computer infrastructure support
System administration
Security
These are organizational groups within STScI that have functional aspects that will be moved to the Sun Fire 15K.
Implementation Review

5. Implementation Review
ODM functionality from previous slide superimposed on current operations environment slide
INS functionality is in upper right of slide.
Current Architecture
Implementation Review

6. Implementation Review
Functionality from ESS from previous slide superimposed on current diagram of testing/development environment.
INS functionality is in the upper right of slide.
Implementation Review

7. Sun Fire 15K Nominal Domain Layout
Function
Division
CPUs
Memory/
I/O A
Development,
Calibration Reference Data
ESS 8
32/1 B
DADS,OPUS,OTFR
ODM 20
80/2 C
I&T
80/1 D
CATLOG DB
16/2 E
ZEPPO DB 4
8/2 F
Development DB
8/1 G
Upgrades, Patches
CPT
16/1
Slide showing how functions and owners relate to 15K domains.
Implementation Review

8. Workgroup Implementation Challenges – Sun Fire 15K
Resources within a domain are shared by tasks in the domain
Processors and memory within a domain can be reserved for high priority tasks
Operations can suspend or modify data flow within a domain to fine tune performance of various systems.
CPT can reallocate resources between domains to clear bottlenecks and for pre-scheduled activities.
Upgrades and build deployments
Performance Testing
Clearing Backlogs
Establish a working-level group to oversee transitions
Resource utilization within each domain must be shared.
Items in green represent work practices that are analogous to current practices established to share a “single domain” server.
The item in red represents new work practices made possible by 15K architecture. Utilizing these 15K features are important to improving uptime and to accurate performance testing,
Implementation Review

9. Clearing Backlogs Domain Layout
Function
Division
CPUs
Memory/
I/O A
Development
ESS 4
16/1 B
DADS,OPUS,OTFR
ODM 40
160/2 C
I&T D
CATLOG DB 8
16/2 E
ZEPPO DB
8/2 F
Development DB
8/1 G
Upgrades, Patches
CPT
Slide showing domain resources to support clearing an operational backlog. Develop/modify work practices as part of the requirements development process for this project.
Implementation Review

10. Workgroup Implementation Challenges – EMC SAN
EMC disk storage is mounted to particular domain (each domain has its own set of HBAs) and available to accounts within that domain.
Clustered volumes (Sun Disk Suite, Veritas, NFS) can be set up for shared access between domains, providing simple, reliable data interfaces.
Movement of new software from development, to testing, to operations is accomplished via tightly controlled configuration management accounts.
Use of business continuity volumes to increase database and system uptime.
Automated Backups, mirroring.
Items in green represent work practices that are analogous to current practices established to share a “single domain” server with local attached storage.
Item in red represent new work practice made possible by the BCV and point-in-time backup features of the EMC. Work practices will be developed as part of the requirements development process.
Implementation Review

11. Meeting New Workgroup Challenges
Strong systems engineering approach
System Requirements Analysis: any combination of:
Operations Concept Document
Architecture Document
Requirements Document
System Design/Project Management Plan
Development and System Testing
User Acceptance Testing
Operational Readiness/Deployment Review
Lessons Learned
Standardized process that can be tailored and applied to software development as well as development of new work practices.
Implementation Review

12. Sun Fire/EMC Workgroup Practices Development Reviews
Review Panel Consists of Division Management, CIO, CPT Management, HST Mission Office, & key technical personnel.
Following Reviews will be completed:
Workgroup Management Design Review
Workgroup Practices Test Readiness Review
Acceptance Review
Bi-Weekly Status Reviews
Implementation Review

13. Requirements Development
Requirements Analysis leads to Operations Concept Document based on Use Case scenarios for the new hardware architecture; e.g.
Reconfiguration of domains to support performance testing
Performance of database upgrades with zero operational downtime
Software build delivery to operations domain and subsequent activation.
Multi-disciplinary team based approach used for OCD development.
Implementation Review

14. Use Case Development Team Formation
Members selected based on skill sets from divisions within the Institute that will be working on the server.
In many cases team members have cross-divisional experience.
The team was reviewed and approved by Division Management.
Methodology:
Online Survey for Stakeholders in each Division
Conduct Use Case interviews with survey participants (where needed) to clarify responses and resolve conflicts.
Use Operations Concept Document as input for Sun Fire 15K Application Readiness Service.
Implementation Review