How to take online repository backup and perform the DatastoreGC and revisionGC for AEM 6.3

Statement : Online repository backup

Solution :

• Go to this URL : http://localhost:4502/system/console/jmx/org.apache.jackrabbit.oak%3Aname%3Drepository+manager%2Ctype%3DRepositoryManagement
• Click on startBackup() and Click on Invoke to start the Backup and it Creates a backup of the persistent state of the repository
• As shown in the below screenshot

• In the below Screenshot highlighted section shows repository Backup is in Progress.

• How to restore the repository post backup

• Status of restore

• How to startDatastoreGC to retrieve BLOB reference

• Full GC run

• Full GC log

• How to start Revision GC

• How to initiate PropertyIndexAsync re-indexing
  
   
• Status of all repository Managment

• How to refresh all open sessions

Statement : Full Garbage collection for BLOBGarage

Solution :

• Go to the JMX console : http://localhost:4502/system/comsole/jmx
• Search for BLOBGarbagecollection and open it.
• Click on startBlobGC(boolean markOnly) or startBlobGC(boolean markOnly, boolean forceBlobIdRetrieve)  and click on invoke enter the value as true to retirve the BLOB ids for reference

As shown in below screenshot 

• Now run the Full Garbage collection as shown in below.

What is the repository Backup Sequence in AEM

Statement : Backup Sequence should be followed

Solution :

•      Optionally execute DataStore GC
•      Ensure that DataStore GC does not run between the NodeStore and DataStore backup
•      Backup NodeStore

o   If S3 and asynchronous uploads enabled then wait for all uploads to finish

o   Check the DataStore cache stats Mbean to confirm all uploads finished

•      Backup DataStore

o   If FDS then copied to an appropriate location

o   If S3 then either enable versioning for auto backups on blob change or backup to a lower cost storage like Amazon Glacier