List of Figures

• 1-1 Recovery Point Objectives
• 1-2 RPO at Synchronization Point
• 1-3 RPO Between Synchronization Points
• 1-4 FD-HA Physical Tape Configuration
• 1-5 D-HA VSM N-plexing Configuration
• 1-6 D-HA VSM Cluster Configuration
• 1-7 D-HA Extended Cluster Configuration (offsite vaults not shown)
• 1-8 D-HA VSM Cross-Tapeplex Replication Configuration
• 1-9 Production Cluster with Remote Cluster Node VTSS2 at DR Test Site
• 1-10 Production Configuration with VTSS2 Loaned for CDRT DR Testing
• 1-11 Symmetric Production CTR Cluster for DR Testing
• 4-1 ELS CTR Configuration
• 4-2 Intra-Site VTV Volume Relationships
• 4-3 CTR Configuration
• 4-4 CDS Copy - No LPARs at Remote Site
• 4-5 System During Business Continuance
• 4-6 Disaster Recovery Testing Using Cross-Tapeplex Replication
• 5-1 RTDs Operating Under a Remote TapePlex
• 6-1 Uni-Directional Clustered VTSS
• 6-2 Bi-Directional Clustered VTSS
• 6-3 ESCON/FICON CLINKs for Bi-Directional Clustered VTSSs
• 6-4 Basic Extended Cluster Configurations
• 6-5 TCP/IP Environment with Two VSM5s
• 7-1 Spare VTSS Configuration - Before Running the DRTEST Utility
• 7-2 Spare VTSS Configuration - After Running the DRTEST Utility
• 7-3 VTSS Takeover Configuration - Before Running the DRTEST Utility
• 7-4 VTSS Takeover Configuration - After Running the DRTEST Utility
• 7-5 Real-Only Configuration - Before Running the DRTEST Utility
• 7-6 Real-Only Configuration - After Running the DRTEST Utility
• 7-7 Primary/Secondary Clustered VTSS Configuration - Normal Operations
• 7-8 Primary/Secondary Clustered VTSS Configuration - During Test
• 7-9 VLE and ACS Configuration - Before Running the DRTEST Utility
• 7-10 VLE and ACS Configuration - After Running the DRTEST Utility
• 7-11 VLE Only Configuration - Before Running the DRTEST Utility
• 7-12 VLE Only Scenario - After Running the DRTEST Utility
• 7-13 Primary/Secondary Clustered VTSS Tapeless Configuration - Before Running the DRTEST Utility
• 7-14 Primary/Secondary Clustered VTSS Tapeless Configuration - During Test
• 8-1 VSM System Recovery Points Example (Local and Remote)
• A-1 Dual ACS Uni-Directional Clustered VTSS Configuration
• A-2 VSM4 with 8 VCF Cards, 8 Host Ports, FICON Directors for 8 RTDs, 4 CLINK Ports
• A-3 Dual ACS Bi-Directional Clustered VTSS Configuration
• A-4 VSMPR1 - VSM5 with 8 VCF Cards, 8 Host Ports, FICON Directors for 24 RTDs, 4 CLINKs
• A-5 VSMPR2 - VSM5 with 8 VCF Cards, 8 Host Ports, FICON Directors for 24 RTDs, 4 CLINKs
• A-6 Basic Extended Cluster Configurations
• A-7 Clustered VSM5s with TCP/IP CLINKs
• A-8 VSM5 to VSM6 Cluster with TCP/IP CLINKs, Cross-Connected VLEs
• A-9 VSM6 to VSM6 Tapeless Cluster with TCP/IP CLINKs