HP StorageWorks XP Remote Web Console Software - Manual (Page 11)

Figure 1 URz Components for Fibre Channel Connection
URz Components
URz operations involve the XP disk arrays at the primary and secondary sites, the physical
communications paths between these storage systems, and the XPURz remote console software.
URz copies the original online data at the primary site to the offline backup volumes at the secondary
site via the dedicated Fibre Channel remote copy connections using a journal volume. You can
operate the URz software with the user-friendly GUI environment using the XP disk array URz remote
console software. Also note, that the host failover software is required for effective disaster recovery
with URz.
For management of URz journal groups that consist of journal volumes located in multiple storage
systems, host I/O time stamping function (provided by MVS DFSMSdfp) is a requisite functional
item. An error reporting communications (ERC) feature is essential for URz to be able to recover
data lost in a disaster.
Figure 2 (page 11) shows the URz components and their functions:
Figure 2 URz Components
“Connection Configuration of Plural Secondary Storage Systems” (page 12) shows the plural
secondary storage systems connection configuration of URz. By connecting one primary storage
system with more than one secondary storage system, you can create a volume pair that has a
one-to-one relationship for each journal group.
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