P: Desktop: Syncing Issues when Originals are stored on a NAS

Good luck and let us know

Good luck - advise if you hit a wall and I will try to remember what I did 🙂

@david...I just spent the last hour looking into iSCSI thinking this might be my last resort.  Returned to this thread to see your post and am glad to hear you've successfully implemented this approach.  I was exploring iSCSI Initiator X from Kernsafe as a free tool, but may end up downloading the globalSAN trial given your positive review.

Thanks for the tip on not automatically mounting the drive.  I've seen mention of issues as well.  

Will report back if I have success.

I would not be too optimistic with iSCSI. It is performing much worse (at least on windows client) compared to SMB protocol (not sure if MAC is using SMB in this case).
https://docs.microsoft.com/pl-pl/archive/blogs/larryexchange/iscsi-or-smb-direct-which-one-is-better

@74350 Thanks, for the idea of iSCSI. I’ll check it the next days. This can be a good workaround until Adobe manages to fix this issue with network shared drives over SMB.

https://www.synology.com/de-de/knowle...

https://www.synology.com/en-global/kn...

I had the same problem with a DS218j and got around it as follows.  I believe the primary problem is that LR wants to use the local network originals as the primary data source (when it should use the cloud).

First step is to create a iSCSI drive on the Synoloogy (google helped here).  You then need a program to connect to the new drive (I used globalSAN - free trial then small fee to buy).  This creates a virtual local drive on your MAC which points to the NAS partition.  LR sees a local drive and seems to work fine.

I do not have the drive automatically mount as if you are not on the LAN and try to connect the MAC has spaz (apparently).

Hope this helps.

I recently purchased a Synology DS118 and a 4TB hard drive with a goal, among other things, of storing a copy of my Lightroom originals on the NAS.  Previously, I was successfully running Lightroom with a copy of my original stored on a USB-connected external hard drive.  My computer is a MacBook Air circa 2013 running Catalina v.10.15.2 and Lightroom 3.1 Build 20191126-2330-434c343.  Library includes 40,000 photos totaling ~900 GB, all of which have been successfully uploaded into the adobe cloud.  So far I've made two un-successful attempts to transition to storage of originals to NAS.

Attempt #1 - After downloading all copies successfully to the USB drive, copied those files via USB to the Synology drive's "photos" folder.  Opened Lightroom, changed storage location to the NAS ("Volumes/photos").  Restarted Lightroom and receive the message "Uploading local photo indices...This may take a few minutes."  Attempted the restart several times...usually it freezes prior to advancing to the "Moving your photos" message.  Once I did make it to that message, but progress remained at "Checking photo 0 of XXXXX".

Attempt #2 - Removed all files from my Synology target folder, and reset the local storage option, unchecking the box to store originals.  Closed Lightroom.  Re-opened Lightroom and set the target location to the NAS ("Volumes/photos"), then restarted the program.  Attempted to download all images from the adobe cloud to my target NAS folder.  It was slow going for the first several thousand images, then somewhere between 10K-20K images it ground to a halt.  After opening and closing Lightroom several times, doing a full reboot of my computer, etc. and confirming I still had a solid connection to NAS could never advance past this stage.

In my case it was mainly down to the NAS being  a bit slow whilst transferring a lot of data. Seems like there is some rather aggressive timeouts in place.

My workflow for now since last week looks like to shut down the NAS and migrate all 100k images to the cloud. When this is done, I try to store all locally on the NAS. But let’s wait, there will be the trouble again

Although I sympathise with you on the migration process (I had to restart migration of over 55k images from Lightroom Classic catalogue after the first attempt failed) I am interested how did you manage to spend hundreds of dollars on it?