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Data Replication Using SnapMirror16-7
If you start the
dump
command when the filer is replicating data to the mirror, the
filer stops the replication and does not update the mirror. It restarts replication
after the
dump
command is finished.
Delaying the mirror update is necessary because when the
dump
command backs up
data from a snapshot, the snapshot must exist until the command is completed. Dur-
ing a mirror update, the filer deletes existing snapshots on the mirror and copies new
ones from the source. This process causes the snapshot being backed up to disap-
pear and the
dump
command to terminate.
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The
/etc/snapmirror.allow
file on the source filer specifies the host names of filers that
are allowed to replicate data from the source filer.
The filer is not shipped with a default
/etc/snapmirror.allow
file. You must use a text
editor to create the file if you want to use SnapMirror.
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You can modify the
/etc/snapmirror.allow
file at any time.
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Each entry in the
/etc/snapmirror.allow
file contains the host name of the filer that can
replicate data from the source filer. Type each entry on a separate line.
([DPSOH
If you want to replicate volumes locally on filerA, enter this line in the
/etc/snapmirror.allow
file on filerA:
filerA
([DPSOH
If you want to replicate volumes from filerA to filerB, enter this line in the
/etc/snapmirror.allow
file on filerA:
filerB