asdsad_asdd's profile

3 Messages

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124 Points

Fri, Nov 23, 2012 12:14 AM

Lightroom: Custom location of Previews.lrdata files

Please make it possible to store Previews.lrdata at another location.My setup is the following:I have a NAS containing all my RAW images and I switch between several computers running lightroom. Since the catalog have to be stored on a local drive, I have it in my Dropbox, in order to sync it between all computers. BUT Lightroom also stores the Previews.lrdata next to the catalog, and I don't want this. (I know that i can use some symlink tricks but over time, dropbox messes up and overwrites the symlinks)I consider the preview data as a simple cache, which only speeds up the browsing of images. It should not reside in the same location as my important data (NEF and lrcat files), but be located in either the temp dir or in a folder like /Users/esben/Library/Application Support/Adobe/Lightroom/Previews - Just like the way a web browser caches its files...At least, you should make it an option to store the previews data apart from the catalog file.

Responses

13 Messages

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252 Points

3 y ago

Completely agree.
This is utterly stupid. But nothing has changed :D

2 Messages

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72 Points

Totally. Completely compromises my backup and mobility strategy.

Champion

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3.7K Messages

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61.6K Points

3 y ago

The previews are not a simple cache to speed up browsing, they are an essential part of the catalog. Without the previews your images cannot be viewed at all. Of course that doesn’t mean they could not be stored elsewhere, but many people misunderstand their importance. The fact that Lightroom can rebuild them does not mean they can be missed.

27 Messages

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588 Points

3 y ago

What make of NAS are you using?  if it's a Synology, you might want to experiment with their new Drive app, which is their take on Dropbox, One Drive, Google Drive etc

13 Messages

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252 Points

3 y ago

It's not about sync apps. There are a lot of scenarios where its an issue. I use one of cloud services, and it has to reupload all of that shit alongside with the photos and catalogue, and it takes 500-600mb! Very, very stupid.

35 Messages

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428 Points

2 y ago

This reply was created from a merged topic originally titled Lightroom Classic: Allow previews folder to be stored separately from catalog.

I store my LR catalogs on a SAMBA network folder (another much-requested feature), and storing previews on a local device would improve performance.  SAMBA doesn't support Windows symlinks, so that's not a workaround in this configuration.

35 Messages

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428 Points

I recently discovered a workaround that I'm trying out: a folder on a local SSD with symlinks to the .lrcat file and the Backups directory on the SAMBA network share.
While LrC will display the "Lightroom cannot open the catalog named ... located on network volume ..." when double-clicking or directly opening the .lrcat symlink, clicking "OK", then choosing the same symlink from the Select Catalog dialog box will succeed, and it can be set as the default startup catalog.  Also, LrC locks the catalog on the network share, preventing use/corruption by other LrC instances on the same or other machines; i.e., the .lrcat.lock file LrC creates need not be on the network share in order to lock out other instances.

35 Messages

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428 Points

NOTE: While this workaround does allow the catalog .lrcat file to reside on a network drive with Previews and other .lrdata folders on a local drive, it also causes the .lrcat-wal file to reside on the local drive.  This increases the risk of catalog corruption.  The .lrcat-wal file is a critical part of the catalog, and data can be lost if either the local or network drive fails.  So I've abandoned this as a workaround.  There wasn't a noticeable performance improvement anyway.

2 Messages

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72 Points

2 y ago

Seriously. Essentially my issue (in my case with Google Drive) and so you saved me having to craft an explanation. I'd give my honest opinion of the (lack of) this feature but it would likely be taken as an attack on the company when there may be a legitimate rationale, although without more info/response from Adobe it's tough to imagine one.

1 Message

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60 Points

1 y ago

Agree.  This is a much needed feature.  Previews are really a local cache - important, but really not needed to be backed up, or even sync'd.  Using LR on more than one machine (as is allowed), is awful with the previews sloshing around through backups and other syncs.

 

We need to be able to designate a folder where the preview data is stored.

1 Message

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68 Points

5 m ago

It's April 2021 now.
Look like this issue STILL has not been addressed. I backup my photos and Lr catalogue to NAS, and I don't want to backup the previews. Looks like Adobe completely omitted this important use-case matter.

Also it's best to keep previews on blazing fast M.2 drive and catalogue with photos on big HDD. This is THE solution every normal user should chase. Lightroom is the party pooper that makes it impossible from the start.

Using symbolic links in not an ultimate solution. Any plans/rumors on implementing that?