Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

To configure automatic site tagging for a disk group

Set the autotagging policy to on for the disk group. Automatic tagging is the

default setting, so this step is only required if the autotagging policy was

previously disabled.

To turn on autotagging, use the following command:

# vxdg [-g diskgroup] set autotagging=on

Assign the site name to an enclosure within the disk group, using the following

command:

# vxdg [-g diskgroup] settag encl:encl_name site=sitename

To list the site tags for a disk group

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To list the site tags for a disk group, use the following command:

# vxdg -o tag=site listtag diskgroup

To remove a site tag from an enclosure or a disk group

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To remove a site tag from a disk group, use the following command:

# vxdg [-g diskgroup] rmtag [encl:encl_name] site=sitename

Configuring site consistency on a volume

To set the site consistency requirement when creating a volume, specify the

siteconsistent attribute to the vxassist make command, for example:

# vxassist [-g diskgroup] make volume size \

nmirror=4 siteconsistent={on|off}

By default, a volume inherits the value that is set on its disk group.

By default, creating a site-consistent volume also creates an associated version

20 DCO volume, and enables Persistent FastResync on the volume. This allows

faster recovery of the volume during the reattachment of a site.

To turn on the site consistency requirement for an existing volume, use the

following form of the vxvol command:

# vxvol [-g diskgroup] set siteconsistent=on volume

To turn off the site consistency requirement for a volume, use the following

command:

477Administering sites and remote mirrors

Administering the Remote Mirror configuration