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CHANGEMIRRORTYPE

EMCMD <system> CHANGEMIRRORTYPE <volume letter> <remote ip> <A/S>

This command is used to change the mirror type of a mirror that is part of a DataKeeper job.

Refer to the examples below.

See Synchronous and Asynchronous Mirroring for information about the supported DataKeeper mirror types.

<system>	The source or target system on which to initiate the changing of the mirror type.
<volume letter>	The drive letter of the mirror to be changed.
<remote IP>	The IP address of the remote system.
<A/S>	The new mirror type (Asynchronous or Synchronous).

Notes:

A job may contain multiple volumes and multiple mirrors. The CHANGEMIRRORTYPE command will modify the type of one mirror each time it is used.

The mirror type of an existing mirror can be changed while the mirror is in the active Mirroring state. The type change takes effect immediately.

The mirror type of non-existing mirrors can be changed. See the 1x1x1 example below.

The mirror type of a mirror that is in the Split-Brain state cannot be changed – the Split Brain must be resolved first.

If a job contains multiple mirrors, individual mirror types can be modified. Having mixed mirror types within a job, and within the mirrors for an individual volume in the job, is supported.

1x1 Mirror CHANGEMIRRORTYPE Command Example

emcmd SYS1.MYDOM.LOCAL getJobInfoForVol D

ID = caa97f9f-ac6a-4b56-8f25-20db9e2808a8

Name = Mirr Vol D

Description = Mirror Volume D

MirrorEndPoints = SYS3.MYDOM.LOCAL;D;172.17.103.223;SYS1.MYDOM.LOCAL;E;172.17.103.221;A

emcmd SYS1.MYDOM.LOCAL ChangeMirrorType D 172.17.103.223 S

The above example changes the mirror of D: between SYS1 and SYS3 to Synchronous.

1x1x1 Mirror CHANGEMIRRORTYPE Command Example

emcmd SYS1.MYDOM.LOCAL getJobInfoForVol J

ID caa97f93j-ac6a-4b56-8f25-20db9j2808a8

Name = Mirr Vol J

Description = Mirror Volume J

MirrorEndPoints = SYS1.MYDOM.LOCAL;J;172.17.103.221;SYS2.MYDOM.LOCAL;J;172.17.103.222;A

MirrorEndPoints = SYS1.MYDOM.LOCAL;J;172.17.103.221;SYS3.MYDOM.LOCAL;J;172.17.103.223;A

MirrorEndPoints = SYS3.MYDOM.LOCAL;J;172.17.103.223;SYS2.MYDOM.LOCAL;J;172.17.103.222;A

emcmd SYS1.MYDOM.LOCAL GetMirrorVolInfo J

J: 1 SYS1.MYDOM.LOCAL 172.17.103.222 1

J: 1 SYS1.MYDOM.LOCAL 172.17.103.223 1

emcmd SYS1.MYDOM.LOCAL ChangeMirrorType J 172.17.103.222 S

emcmd SYS1.MYDOM.LOCAL ChangeMirrorType J 172.17.103.223 S

emcmd SYS2.MYDOM.LOCAL ChangeMirrorType J 172.17.103.223 S

In this example, all mirror types will be changed to Synchronous. The third command changes the mirror type of the non-existing mirror between SYS2 and SYS3.

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