how to Fast Migrate RBLOB from RBS to SQL database

server sharepoint 2013 Migrate RBLOB from RBS to SQL database

$rbs.SetActiveProviderName("")
$rbs.Migrate()

ref : https://technet.microsoft.com/en-us/library/ff628254.aspx

about 20 GB is long time to migrate about 12 hour

have any method to fast migrate ?

best regards

chatchai-netd