HP StorageWorks Continuous Access EVA Administrator Guide (T3687-96043, December 2005)

2 Remote replication setup
Local and remote sites can be as close as the same room or thousands of m iles apart.
Performance-optim ized implementations may include three or four sites in multiple replication
relationships. For supported distances and multiple replication relationships, see H P StorageWorks
Continuous Access EVA planning guide. For distance technologies and fabric rules, see Volumes
2and4ofHP StorageWorks SAN design reference guide on the HP SAN Infrastructure web site:
h
ttp://h1800 6.w w1.hp.com/products/storageworks/san/documentation.html.
This chapter describes the basic steps for setting up HP Continuous Access EVA.
Verify EVA setup
Your EVA purchase includes installation services provided by HP -authorized service representatives at
local and re
mote sites. Verify that the EVAs are properly setup a nd cabled for remote replication.
Installation checklist
Verify that the following items are completely installed:
• External connections from the array controllers to two or, for some controllers, four fabrics that are
also connected to application servers (hosts).
NOTE:
Remote replication is not supported on arrays that are connected to hosts without an intermediate
Fibre Channel switch.
• Internal connections from array controllers to disk enclosures and loop switches
• Controller World Wide Name and optional HP Command View EVA password set on the array
• HP Command View EVA installed on a manag em ent server that is connected to the sam e fabrics
as the array controllers
Supported cabling
Verify that the cabling between your arrays and Fibre Channel switches meets remote replication
requirements. The supported cabling scheme depends on the a rray controller ports and software features,
asshowninthefollowingfigures. (To determine if your controllers have two or four ports and if they
support active/active failover, see your EVA user guide.) In mixed EVA configurations, use the cabling
scheme specific to each controller. For optional high-availability cabling options, see Volume 1 of
HP StorageWorks SAN design reference guide.
Figure 3 shows the supported cabling scheme for remote replication on arrays with 2–port controllers
and support for active/active failover (arrays not running VCS 3.x). The even-numbered ports on both
controllers are connected to one fabric and the odd-num bered po rts on both controllers are connected to
the other fabric.
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