Understanding Why Data is not Replicating to an Offsite Barracuda Backup Location

The Barracuda Backup default rate limit controls the rate of data replicated to offsite storage locations throughout the day; preserving Internet bandwidth during peak usage and optimizing offsite backup transfers during daily non-peak hours. You can further refine the rate limit by enabling an alternate rate limit and specifying a specific time period to which it applies.

However, if a large backup is scheduled during the alternate rate limit time interval, replication to the offsite location may not complete within the specified time period. In this case, the yellow status indicator () icon displays to the right of Replication in the System Health section on the Dashboard page indicating there is a problem with the offsite syncing queue.

Resolve Data Replication Issue

To resolve this issue, you can:

• Increase the rate limit
• Reduce the amount of replicated data
• Decrease the backup schedule frequency

Increase Rate Limit

Use the following steps to increase the rate limit to ensure data replication finishes within the specified timeframe:

1. Log in to Barracuda Backup, and go to the Backup > Replication page.
2. Click the Settings () icon for the target.
3. Scroll to the Rate Limit section.
4. Select Enabled to the right of Alternate Rate Limit.
5. Specify your settings:
   • Full Speed – Uses 100% of available bandwidth
   • Smart Mode – Drag the Percent of Bandwidth bar to specify the rate limit; click Test bandwidth to verify your setting
   • Specify the rate limit in Kilobit(s), Megabit(s), or Gigabit(s) per second
   • From/To – Specify the start and end time (24 hour format)
   • Days of Week – Select the days on which the alternate rate limit applies
6. Click Save at the top of the page to save your changes.

Reduce Amount of Data for Replication

Use the following steps to select less data for replication:

1. Log in to Barracuda Backup, and go to Backup > Schedules.
2. Click Edit to the right of the schedule associated with the backup.
3. The Edit Backup Schedule page displays. In the Items to Back Up section, review the selected items. Determine if there are items that do not need backup, and clear those items.
4. Click Save at the top of the page to save your changes.

Decrease Backup Schedule Frequency

1. Log in to Barracuda Backup, and go to Backup > Schedules.
2. Click Edit to the right of the schedule associated with the backup.
3.  In the Edit Backup Schedule page, if Repeat is selected in the Daily Backup Timeline section, reduce the minute or hour frequency.
4. Click Save at the top of the page to save your changes.

View Offsite Transfer Statistics

To view transfer details, log in to Barracuda Backup, and go to Backup > Replication. The following queue details display:

• Status – Displays whether replication target is online and reporting successfully (), or offline ()
• Total Stored – Total size of file parts transferred offsite from the Barracuda Backup appliance
• Queue Age – Amount of time that the queued data has been waiting to be transferred to the target
• Queue Size – Total size of the file parts yet to be transferred to the target