Typical Components; Storage Systems - HP StorageWorks P9000 User Manual

Typical components

A typical configuration consists of the following elements. Many, but not all, require user set up.
A P9500 system on the local side connected to a host. The system on the remote side, which
may be a P9500 system, must be connected to the local array via Fibre Channel data paths.
The secondary system may consist of a different models—XP12000 Disk Array/XP10000
Disk Array or of other vendors' systems.
A host at the local site, connected to the local storage system. It is also highly desirable to
have a host at the secondary site connected to the secondary system for use in a disaster
recovery. If this is not possible, the local host must be in communication with the secondary
system.
A primary volume (P-VOL) on the local system that is copied to the secondary volume (S-VOL)
on the secondary system. The primary and secondary volumes may be composed of expanded
LUs using LUN Expansion.
Fibre Channel data paths for data transfer between secondary system.
Target, Initiator, and RCU target ports for the Fibre Channel.
Remote Web Console graphical user interface software, used to perform Continuous Access
Synchronous configuration and pair operations. RAID Manager software may also be used
for most pair operations, as well as disaster recovery operations.
The following figure shows a typical Continuous Access Synchronous environment.
Figure 1 Continuous Access Synchronous components

Storage systems

This guide documents Continuous Access Synchronous operations in which the primary system is
a P9500 and the secondary system is a P9500, XP24000/XP20000 Disk Array, or XP12000
Disk Array/XP10000 Disk Array.
The primary system consists of a main control unit (MCU) and service processor (SVP).
The secondary system consists of the remote control unit (RCU) and the SVP.
The primary and secondary systems are often referred to as the MCU and RCU.
The primary system communicates with the secondary system over dedicated Fibre Channel data
paths.
8 Continuous Access Synchronous overview