Multi terabyte dbses and issues with dataguard

We have several databases running dataguard without any major problems for some 
time. However, the databases have grown considerably and I'm concerned about 
our ability to restore a standby after a failover or a loss of archive logs 
that breaks the relationship between the two databases. Is anyone out there 
running a geo redundant multi terabyte configuration with dataguard? If so how 
are you restoring the standby database to the other datacenter?
 
 We've been simply copying the files over the network to the other data center. 
I have thought at some point it may be faster to just mail a tape backup to the 
other data center, restore, recover, and start standby, but was wondering how 
other people are dealing with this or other issues that I may want to look out 
for with large dataguard installations.
 
 Thx, Dave
 
 

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