Incremental Migration?
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Thread: Incremental Migration?

  1. #1
    Junior Member
    Join Date
    Nov 2018
    Posts
    1

    Question Incremental Migration?

    Hello All,

    I'm migrating a ZCS 8.6.0 on CentOS 6 to ZCS 8.8.10 on CentOS 7.

    I've got ZeXtras Migration tool installed on the Source Server and ZeXtras Suite on the Destination.

    Last night I successfully exported from the Source to an SSHFS mount and was able to successfully import the backup on the Destination. All went extremely well, but it took over 4 hours for the whole process so I was not able to go live with the new server just yet. Currently the Source is still the active server and the Destination is sitting idle.

    My question is: What is the best method to import the data that has changed from then until now to the Destination server? Does incremental migration work? I've read the FAQ and the Wiki, but I'm not 100% clear on how to make this work.

    When I attempt to export from the Source again, it complains that the folder is not empty. If I do a full export to a different folder, will the import on the Destination duplicate the already imported data or will it only import the difference between the last import?

    Any suggestions on the proper method to import just the new data would be appreciated!

    james

  2. #2
    Zextras employee Known ZeXtras Reseller
    Participant

    Join Date
    Aug 2016
    Posts
    88
    Hi jvantslot,
    and welcome to the Zextras forum!

    Quote Originally Posted by jvantslot View Post
    I'm migrating a ZCS 8.6.0 on CentOS 6 to ZCS 8.8.10 on CentOS 7.
    I've got ZeXtras Migration tool installed on the Source Server and ZeXtras Suite on the Destination.
    ...
    My question is: What is the best method to import the data that has changed from then until now to the Destination server? Does incremental migration work? I've read the FAQ and the Wiki, but I'm not 100% clear on how to make this work.
    Incremental migration can be achieved only with the full Zextras Suite, installed on the Source and on the Destination Server, because you have to use the "Smart scan" feature

    As reported in the FAQ section of the migration wiki page:
    Code:
    Q: Do I need a valid license in order to perform an incremental migration?
    Yes. It can be either a Trial License or a purchased one.

    Quote Originally Posted by jvantslot View Post
    When I attempt to export from the Source again, it complains that the folder is not empty. If I do a full export to a different folder, will the import on the Destination duplicate the already imported data or will it only import the difference between the last import?
    Any suggestions on the proper method to import just the new data would be appreciated!
    I strongly suggest you install the full Suite on the source server and restart the process from scratch, removing imported data and re-initializing the destination backup path.

    Following the migration guide, you will also be able to raise the number of threads used by the import operation and use the "provisioning only" feature in order to reduce the destination idle time.

    Have a nice day,
    Luca
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