wweich

Currently, if you use the same identity on both peers, both will have owner permissions and you cannot set one of them to read only.

Yes, every node syncs with every node.

The port that needs to be open/forwarded is the one you set in the config. I don't know if UDP or TCP (I forwarded both). If you "firewalled" your device itself you may need to open additional ports for local sync/discovery.

BTSync will automatically connect locally, if it finds the other node in local network. Afaik it always tries local at first (if enabled) and after that it uses tracker/DHT (if enabled). I think the only way to see if the transfer is local, is by speed. As local transfer will be much faster than over internet.

You can disable the archive in the folder settings. I deleted the folder several times before without causing problems.

The Camera Backup is a special folder, which works in the way you described. As far as I know this cannot be changed. But you can add your Camera/DCIM folder manually, instead of using the special camera backup. Then it will be r/w (more precisely owner). You currently cannot change permissions when sharing folders between your own devices linked in the same identity. I you share a folder, every device linked to your identity will automatically have owner permissions.

If you share the folder r/w, you can copy the files into the folder previous to adding it to btsync. btsync will scan the folder an see, that the files are already there.

At least in the Linux version you can still do that with 1.4 folders. If you enable the option to show "copy keys" in advanced settings, you can copy the keys from the menu of a folder and see the keys in the details of a folder. To add a 1.4 folder in V2 you have to press the shift key while clicking "add folder".

You will need to run btsync twice on that computer. One which is sharing the original e-mail folder, and one that is "receiving" the sync to save it on the other drive. I don't really know how to do it in windows though. As you probably want to local "sync" to be one way only, I would do that with robocopy, which is a windows internal tool to copy/mirror a folder to another. It would be like "robocopy <SOURCE> <DESTINATION> /MIR". This can be started as a regular scheduled job or you can use a combination of /MON:n and /MOT:n where n is the amount of changed files / elapsed time for a resync and have it in your windows startup.

If you use the same identity for every computer and NAS to have only one pro subscription, every device in your business will be the owner of every folder that is shared. If you plan to have different users, which should only have access to their folder(s), you will need a separate identity for every user, and a separate pro subscription.

The automatic folder sharing between devices of the same identity is a feature of "My Devices" and only available in pro version. You can disable the automatic adding to a device in the device details in My devices, so that the folders are disabled (gray) by default. Maybe you did that for the one device? As far as I know there is no difference how you add a folder. If it's the same identity the folder should have the same permission (r/w, r/p, owner) as all your other devices.

That question was kind of asked in another thread before. The answer was, that if you configure your shares inside the config file, you can only share v1.4 folders with keys, not the new v2 folders with certificates. So you will have to use v1.4 folders for that on every device. To add a v1.4 folder in btsync 2.0 you have hold down Shift while clicking the add folder button.

You can have up to 10 shared folders with the free version of Sync 2.0, no matter how much folders and files are inside that folders. Only the explicitly shared will count.

How should btsync on your PC know which Photo belongs to the DCIM/Facebook on your Android and which to Pictures/Facebook? If you want to keep the photos separate on Android I would suggest you create a photos folder on your PC with two subfolders DCIM and Pictures, which will be synced separately with btsync. I you want to get all Facebook Photos into one folder, you could sync he DCIM/Facebook into a separate folder on your PC and create a scheduled task or whatever, which moves the photos from that folder to the synced pictures folder. This will then delete the photos from DCIM/Facebook on your phone an recreate them in Pictures/Facebook.

I shared a folder from my linux client and for some reason only got the approval request on that device. When I shared the folder from my Android phone, I got the approval request on all devices of my identity (1x Linux, 2x Android). So it seems that the share link is bound to the identity and not the one device alone. So before reinstalling your OS make sure to have at least one other device linked to the same identity. p.s. btsync on Android has three share options: r/o, r/w and owner