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MikeSmith
Joined: 30 Sep 2013
Posts: 11
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 Posted: Wed Oct 02, 2013 7:36 pm Post subject: Subfolder and File Level Monitoring in VVEngine |
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I'm looking for some clarification regarding the monitoring level in VVEngine.
Here is a snippet from the Help in VVEngine:
"The difference between Subfolder Level and File Level is that File Level monitoring is more detailed, detecting changes at file level instead of subfolder level. However, because of the level of detail, it may result in more Overflow situations. For most applications, Subfolder Level monitoring will suffice."
So my questions are:
1. File monitoring is more detailed. Does this extra detail put a significant strain on system resources such as network, cpu or memory?
2. Also, "For most applications, Subfolder Level monitoring will suffice." is there any list of applications where Subfolder level monitoring is not sufficient?
I am using VVEngine to monitor directories with a large number of subfolders and files and I am not sure if my selection of Subfolder level is correct.
I have also set VVEngine to run a full re-comparison with this condition: elapsed_days>0 to make sure every 24 hours the files are -re-synched. Will this work as I have planned? |
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TGRMN Software
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Joined: 10 Jan 2005
Posts: 8758
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| Posted: Thu Oct 03, 2013 1:25 am Post subject: |
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Hi,
| Quote: | 1. File monitoring is more detailed. Does this extra detail put a significant strain on system resources such as network, cpu or memory?
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It puts more strain on VVEngine, e.g. it has to "remember" each file that got changed, instead of just remembering the folder where changes were detected.
| Quote: | | 2. Also, "For most applications, Subfolder Level monitoring will suffice." is there any list of applications where Subfolder level monitoring is not sufficient? |
If you have a huge subfolder where only 1 file changes and do not want ViceVersa to recompare the entire subfolder. I think in your case subfolder monitoring will be fine.
| Quote: | I have also set VVEngine to run a full re-comparison with this condition: elapsed_days>0 to make sure every 24 hours the files are -re-synched. Will this work as I have planned?
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Yes, this will instruct VVEngine to perform a full recomparison of source and target just in case of anything that was missed during the real-time operation. If you'll find that the full re-comparison never sync new files, then you probably can have a full rescan every 7 days instead or so, if you see the real-time operation is not missing changes (mostly only over the network this happens).
thanks
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MikeSmith
Joined: 30 Sep 2013
Posts: 11
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| Posted: Thu Oct 03, 2013 5:00 pm Post subject: |
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| Are "Full Recomparison" in VVEngine and "Rescan" in ViceVersa Pro the same? If I use one do I need to use the other? |
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TGRMN Software
Site Admin
Joined: 10 Jan 2005
Posts: 8758
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| Posted: Fri Oct 04, 2013 1:27 am Post subject: |
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Hi, no, they are different. Full re-comparison is when VVEngine "asks" ViceVersa to re-compare the entire source and target. Just re-comparing not necessarily rescanning content. Rescan is an option where source and target are not rescanned, e.g. the content is saved in a database and loaded from there. Content of source or target is cached to speed up comparison.
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MikeSmith
Joined: 30 Sep 2013
Posts: 11
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| Posted: Fri Oct 04, 2013 3:20 pm Post subject: |
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| TGRMN Software wrote: | | Hi, no, they are different. Full re-comparison is when VVEngine "asks" ViceVersa to re-compare the entire source and target. Just re-comparing not necessarily rescanning content. Rescan is an option where source and target are not rescanned, e.g. the content is saved in a database and loaded from there. Content of source or target is cached to speed up comparison. |
If I understand correctly a re-comparison uses the contents saved in the database while a re-scan refreshes the database? |
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TGRMN Software
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MikeSmith
Joined: 30 Sep 2013
Posts: 11
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| Posted: Mon Oct 21, 2013 11:50 am Post subject: |
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| How are rescans and re-compares handled if VVEngine is doing real-time file monitoring? I tried to setup real-time monitoring with a re-compare every 24 hours and a rescan set every 7 days to make sure the content is in sync but VV Engine gave me an error saying I could not do that with real time monitoring. |
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TGRMN Software
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MikeSmith
Joined: 30 Sep 2013
Posts: 11
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| Posted: Tue Oct 22, 2013 12:38 pm Post subject: |
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Error - 'Monitoring Source' for changes can not be used in combination with the option 'Do not rescan source' in the profile settings.
If I do not setup a no-rescan, how often does real-time monitoring rescan? |
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TGRMN Software
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Joined: 10 Jan 2005
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| Posted: Wed Oct 23, 2013 1:08 am Post subject: |
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No-rescan (option set in profile settings -> performance) instructs ViceVersa to cache the source or target , and it's only needed when scanning is slow, eg. a target on the network. Real-time does not need to rescan anyway as it detects only files that have changed and copies / sync those only. The Full-Recomparison condition in the VVEngine scheduling instructs VVEngine and ViceVersa to perform a full recompare of all files in source and target every X hours, minutes or days.
The error message is because you have enabled real-time monitoring for source, which does not need a norescan for source. If you want you can use no rescan for target.
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