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Protection groups
Protection Groups
When planning your DPM deployment, the first thing you need to decide on is
your protection groups. This goes back to understanding your company's business
requirements helping you to recognize why you are backing up and what you
need to back up. Protection groups in DPM are a group of servers/data that you
are protecting. These protection groups can have different protection and retention
options set for each group. Here is an example, you can have your Exchange and
SQL servers in one protection group and your print servers in another protection
group. Your print servers do not need to be backed up every 15 minutes but your
Exchange and SQL servers will definitely need to be backed up every 15 minutes.
The application data on Exchange and SQL changes constantly so you need to back
this up often. Your print server can be backed up once per day if you want because
it does not change often but needs to be protected. You can set the backup frequency
differently on each because they are in separate protection groups and hold their
own policy settings. Some companies may put all their data and servers that need to
be protected in the same protection group and some environments may call for many
protection groups. How many protection groups you use is really determined by
your particular needs but this is an important piece to have planned out up front.
Backup schedule and retention
Be realistic with your goals when determining your DPM backup system. This goes
back to laying out your need for backup and restore times that are acceptable in
your company. Also this is where planning your backup schedule comes into play.
Do you need to backup data every 30 minutes? If so what data needs this level of
backup frequency? What amount of time is acceptable for restores? DPM has a few
options here. The options that can be set on a protection group are synchronization
frequency, recovery point schedule, and retention range. It is important to know
your backup goals, that way when you go to set up protection groups you will know
what you will want for these settings. Here is what each of these settings mean:
Synchronization frequency : This is how often DPM will synchronize its
data with the data on the protected server. You can set this as often as
every 15 minutes.
Recovery point schedule : Is the date and time that protected data is available
for recovery. These dates and times are available for you to restore from.
Retention range : This sets the length of time DPM will retain your protected
data for
 
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