These are just some notes pertaining to performing a disaster recovery from our on-line backup system. This is not a howto, but you may find these notes useful.
Basics
On-line backup, in general, is not designed as a disaster recovery system or medium. In other words, though we try to configure our client backups to be able to do a disaster recovery, it is far from optimal for that purpose. On-line backup has many, many advantages, but disaster recovery is not its strength.
Notes
- if at all possible, recover the data to a notebook or portable hard drive in our data center
- don't use the Zip or Tar methods to restore your data
- file size limitations will not allow restoration of an entire server
- if the last backup was a partial, perform two restore operations
- restore the last complete backup before the partial
- then restore the partial to get the most recent files possible
- do not partially restore files that operate as a set
- you can renice the processes on both machines for maximum speed
- a sample restore over a 1.5Mbps DSL connection transferred about 573MB per hour
- a large restore can take many, many hours even over an optimal DSL connection
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