Volume expectations

asked on January 18, 2018

As older volumes have files deleted does Laserfiche write new documents to older volumes freed up space? If yes, does this work if the old volumes are on a different drive then the current fixed path?

In an example I have 17 volumes that roll over at 20GB. most volumes get close to 20GB but volume number 3 has had a few files deleted and now its down to 15GB. from my understanding the deleted 5GB is not returned as space for the windows system to use. That space always belongs to Laserfiche but its empty. Does the Volume number 3 get data written to it to fill it back up to 20GB or does it keep shrinking till its down to no documents? if this is the case does that remaining 5GB(or whatever unused space) in this example get "used" by the current active volume 17 or possibly the new volume 18 once it rolls over?

Asking for a friend. ;)

Any good white papers on dealing with volumes approaching 1.5 TB or larger? Any suggestions on maximum repository size? My company has been approached by a big data company holding 4 PB of data. That's well outside of a practical use of Laserfiche right?

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replied on January 18, 2018

Brian,

The "20GB" size of the volume set in Laserfiche is strictly a limit on how big the volume folder can grow meaning it is does not actually consume that much space on the disk until it is full.

So, based on your example, if you delete 5GB worth of files from a specific volume that previously held 20GB, those files will be deleted purged during the maintenance window and you will get the 5GB back on your disk without any additional action.

I do not believe Laserfiche will go back and reuse old volumes, and it definitely won't automatically use volumes on a different drive other than the currently set path, so in theory a volume could shrink down to 0 files, but at that point it is just an empty folder structure that doesn't really take up space.

Basically, when you rollover to a new volume, Laserfiche creates a new directory, but the amount of disk space it uses is tied to how many files are actually stored not the size limit.

This is actually something to be mindful of because LF does not "reserve" space on the disk and I've seen situations in which a volume still had room to grow as far as LF was concerned but the disk actually filled up due to logs and files from other server processes.

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replied on January 18, 2018

So to clarify, If I were to delete all the documents within a single volume that was previously sitting at 20GB, Windows would show the drive as having an additional 20GB free (once the maintenance cycle has completed). Am I understanding that correctly?

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replied on January 18, 2018

That's correct. When you delete the documents from Laserfiche it will flag the files for deletion, and once maintenance runs you will get that disk space back.

If you're deleting everything (or migrating everything to a new volume) the only thing that will be left behind is the directory/folder structure and the VOLUME.ID file.

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