Difference between revisions of "Zimbra Next Generation Modules/Zimbra NG Backup/RealTimeScan"

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#REDIRECT [[Zimbra_NG_Modules/Zimbra_NG_Backup/RealTimeScan]]
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  <li>[[Main Page|Zimbra Wiki]]</li>
 
  <li>[[Zimbra_Next_Generation_Modules]]</li>
 
  <li>[[Zimbra_NG_Backup]]</li>
 
  <li class="active"> Real Time Scan</li>
 
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    <h2 class="title-header" style="padding-bottom: 9px; border-bottom: 4px solid #0087c3;">Zimbra NG Backup - Real Time Scan</h2>
 
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                        <h5 class="post-title">Zimbra NG Backup - Real Time Scan</h5>
 
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== What is the Real Time Scanner? ==
 
The Real Time Scanner is the big innovation in Zimbra NG Backup.
 
Each event on the system is recorded live to Zimbra Open Source Edition's RedoLog and saved by Zimbra NG Backup, which means that is always possible to rollback an account to a previous state.
 
Thanks to the Real Time Scanner all the restore modes work with a split-second precision.
 
 
 
== How does it work? ==
 
The Real Time Scanner reads all the events of the mail server almost real-time by following the flow of informations provided by the RedoLog. Then it 'replicates' the same operations on it's own data structure, creating items or updating their metadata. No information is ever overwritten in the backup, so that every item has its own complete history.
 
 
 
== Managing the Real Time Scanner ==
 
=== Enabling the Real Time Scanner ===
 
====Via the Zimbra Next Generation Modules Administration Zimlet====
 
* Select the Zimbra NG Backup Tab.
 
 
 
* Under Real Time Scanner, press the "Enable" button.
 
 
 
 
 
'''Note: when the Real Time Scanner is enabled for the first time or re-enabled after a stop, a Live Full Scan is required. A warning will be displayed after enabling the Real Time Scanner and you will be prompted to start the Full Scan.'''
 
 
 
==== Via the Zimbra Next Generation Modules CLI ====
 
To enable the Real Time Scanner via the Zimbra Next Generation Modules CLI, the "ZxBackup_RealTimeScanner" property of the Zimbra NG Backup module must be set to "true":
 
 
 
<pre><nowiki>
 
zxsuite backup setProperty ZxBackup_RealTimeScanner TRUE
 
</nowiki></pre>
 
 
 
=== Disabling the Real Time Scanner ===
 
====Via the Zimbra Next Generation Modules Administration Zimlet====
 
* Select the Zimbra NG Backup Tab.
 
 
 
* Under Real Time Scanner, press the "Disable" button.
 
 
 
==== Via the Zimbra Next Generation Modules CLI ====
 
To disable the Real Time Scanner via the Zimbra Next Generation Modules CLI, the "ZxBackup_RealTimeScanner" property of the Zimbra NG Backup module must be set to "false":
 
 
 
<pre><nowiki>
 
zxsuite backup setProperty ZxBackup_RealTimeScanner FALSE
 
</nowiki></pre>
 
 
 
==== Why should I disable the Real Time Scanner? ====
 
The only time you should stop the Real Time Scanner is while performin an External Import of multiple domains. This is a safety measure to avoid high load on your server.
 
After the import just re-enable the Real Time Scanner and perform a Full Scan when prompted, and you are good to go!
 
 
 
=== Limitations and safety scan ===
 
At the moment there are two main limitations when restoring data acquired via the Real Time Scanner.
 
 
 
Namely, those are
 
* '''Emptied Folder''' - when a user uses the "Empty Folder" button in the right-click context menu
 
 
 
In this case, and any time Zimbra NG Backup cannot determine the status of an item by reading the metadata saved by the Real Time Scan, a [[Zimbra_Next_Generation_Modules/Zimbra_NG_Backup/FullScan|Live Full Scan]] on the given account is triggered BEFORE the restore.
 
 
 
This fixes any misaligned data and sanitizes the backupped metadata for the mailbox.
 
 
 
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                            <p><i class="fa fa-clock-o"></i> Aug 25, 2016 - [https://www.zimbra.com/email-server-software/ Know more »]</p>
 
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Latest revision as of 12:53, 29 November 2017

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