Wiley VMware Infrastructure 3 For Dummies 978-0-470-27793-5 Manual De Usuario
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978-0-470-27793-5
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Part I: Ready, Set, Go with VMware Infrastructure 3
Stage 4: New ways to protect your data
If you back up your physical machine, you want to continue backing it up
after it becomes virtual. I have good news for you: The method you use
to back up your physical machines will work exactly the same after you
virtualize them. However, you now have a new backup option that uses
virtual machine snapshots.
after it becomes virtual. I have good news for you: The method you use
to back up your physical machines will work exactly the same after you
virtualize them. However, you now have a new backup option that uses
virtual machine snapshots.
Snapshots take a picture of your machine at a moment in time. Any changes
to a machine or its data after that point in time can either be applied or
discarded. The choice is yours. This creates a lot of possibilities to prevent
IT headaches.
to a machine or its data after that point in time can either be applied or
discarded. The choice is yours. This creates a lot of possibilities to prevent
IT headaches.
You can backup an image of your machine to tape for rapid restore using
snapshots. This is how VMware Consolidated Backup works. You can use
VMware Converter to restore machines backed up using snapshots. It works
really well and greatly speeds disaster recovery.
snapshots. This is how VMware Consolidated Backup works. You can use
VMware Converter to restore machines backed up using snapshots. It works
really well and greatly speeds disaster recovery.
Additionally, snapshots can be used to safely and easily test an upgrade
without the risk of destroying your machine. Simply take a snapshot and
then apply your update. If it works, apply the snapshot. If not, discard the
snapshot.
without the risk of destroying your machine. Simply take a snapshot and
then apply your update. If it works, apply the snapshot. If not, discard the
snapshot.
Of course, you can also get into trouble with snapshots:
If your virtual machine is a database server, shut down the database
before doing anything with snapshots to prevent database corruption.
before doing anything with snapshots to prevent database corruption.
Snapshots can be used in your backup strategy, but they do not replace
your backup strategy. Do not accumulate multiple snapshots over a
long period of time. They are designed to be used temporarily. This is
covered in more detail in Chapter 16.
your backup strategy. Do not accumulate multiple snapshots over a
long period of time. They are designed to be used temporarily. This is
covered in more detail in Chapter 16.
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