HP XP Continuous Access Software - Manual (Page 14)

14 Continuous Access XP for the XP1024/XP128
• ” Continuous Access XP Asynchronous recordset operations ” on page 21
• ” Continuous Access XP Asynchronous consistency group operations ” on page 23
• ” Continuous Access XP volume pair status ” on page 25
Components
Continuous Access XP operations involve the XP1024/XP128 at a primary and secondary (remote) site,
physical communications paths between these disk arrays, and Command View XP or XP Remote Web
Console. Continuous Access XP copies online data at the primary site to volumes at the secondary site via
dedicated Fibre Channel and/or ESCON remote copy connections.
Host failover software is required for effective disaster recovery with Continuous Access XP.
Figure 1 and Figure 2 show Continuous Access XP components and the following functions:
• ” XP1024/XP128 ” on page 15
• ” Main and remote control units (MCUs and RCUs) ” on page 15
• ” Volume pairs (P-VOLs and S-VOLs) ” on page 16
• ” Continuous Access XP Asynchronous consistency groups ” on page 16
• ” Remote copy connections ” on page 17
• ” Initiator ports and RCU target ports ” on page 17
• ” Remote control ports (RCPs) and local control ports (LCPs) ” on page 18
• ” Command View XP management station or XP Remote Web Console ” on page 18
• ” Host failover software ” on page 18
Figure 1 Continuous Access XP components for Fibre Channel connections