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Table 6. Maximum number of async mirrors and consistency groups

Parameter CX4-120 CX4-240

CX4-480 CX4-960

Total mirrors per storage

system

256 256 256 256

Total mirrors per consistency

group

32 32 64 64

Total consistency groups per

storage system

64 64 64 64

Note: The maximum allowed number of consistency groups per storage system is 64. Both MirrorView/A

and MirrorView/S consistency groups count toward the total.

For the maximum number of sync and async mirrors and consistency groups for the CLARiiON CX3

storage systems, please refer to the EMC CLARiiON Open Systems Configuration Guide available on

Powerlink.

SRM recovery plan

The SRM recovery plan is the list of steps required to switch operation of the data center from the protected

site to the recovery site. Recovery plans are created at the recovery site, and are associated with a

Protection Group or multiple Protection Groups created at the protected site. More than one recovery plan

may be defined for a Protection Group if different recovery priorities are needed during failover. The

purpose of a recovery plan is to ensure priority of a failover. For example, if a database management server

needs to be powered on before an application server, the recovery plan can start the database management

server, and then start the application server. Once the priorities are established, the recovery plan should be

tested to ensure the ordering of activities has been properly aligned for the business to continue running at

the recovery site.

Testing the SRM recovery plan

Once the SRM recovery plan is created, it is important to test that the plan performs the operations

expected. A recovery plan is shown in Figure 29. To test the plan, click the Test button on the menu bar.

EMC CLARiiON Integration with

VMware ESX Server

Applied Technology 48

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