Barracuda Networks 4 Manuel d'utilisateur télécharger pdf (Page 27)

Configuring Backups 25

Step 3: Create Backup Schedules

Now that you have configured your computers and data sources, you can create backup schedules,

either individually or for all sources. If no schedule is created for a data source then it will not be

backed up.

To create a backup schedule, go to the

BACKUP > Schedules page of the Barracuda Backup Service

Web interface. Click

Add a Schedule and fill in the information on the Add Backup Schedule page

If the backup schedule is for Microsoft SQL or Microsoft Exchange, you must specify the type of

backup to run:

• Full – This backup type performs a full backup of data, including the transaction logs.

• Log – This backup type only backs up the transaction logs which have been created since the

last full backup.

• Smart – This backup type is a combination of the full backup and the transaction log backup.

Barracuda Networks recommends this backup type for SQL and Exchange servers.

With the Smart Backup type, threshold values are used to determine when to switch between full and

log backups. The minimum threshold value specifies how many days the Barracuda Backup Service

continues to back up transaction logs before another full backup is run. After the minimum threshold

value is met, the Barracuda Backup Service determines whether to perform another backup based on

the binary data queue. If the binary data queue size exceeds 1 GB, the Barracuda Backup Service

continues the transaction log backup until:

• the maximum threshold level is met, or

• the queue size drops below 1 GB.

Step 4: Create Data Retention Policies

Configure retention policies for data stored on a Barracuda Backup Server on the BACKUP >

Retention Policies

page. Be sure to configure retention policies for your data. Not doing so means

that some unwanted data will be moved across the Internet and stored, causing unnecessary expense.

Data is retained based on a traditional grandfather-father-son (daily-weekly-monthly) rotation model.

You can specify how long to keep daily, weekly, monthly and yearly backups by creating data

retention policies. Multiple retention policies can be created for files, data backed up by the Barracuda

Backup Agent (Exchange, SQL, System State), and email messages.

There are some template policies provided to assist you in creating your own retention policies. You

can create one policy for all of the computers and data sources on a Barracuda Backup Server or

multiple policies that each include some subset of the data.

When data is removed according to a retention policy, it is deleted from both the local Barracuda

Backup Server and the offsite storage locations. Removed files that have been backed up using

Network File Shares Protocol or SSHFS may be retained for a longer period of time, according to the

configuration. Otherwise, once your data has been purged, it is gone forever. Purging applies to

historic file revisions only; your current data will never be impacted by a retention policy.

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Barracuda Networks 4 Manuel d'utilisateur Page 27