You can mount a Hybrid Share folder on your Synology NAS to initialize it. You can also use this method to mount an initialized Hybrid Share folder concurrently on up to ten Synology NAS devices. Then, store and access data in the Hybrid Share folder by using the supported file access methods.

1. Go to DSM Control Panel > Shared Folder.
2. Click Create > Mount Hybrid Share Folder.
3. Click Start.
4. Sign in with your Synology Account credentials.
5. Click Allow to grant your Synology NAS access to C2 Storage. Click Next.
6. Do either of the following:
   • If you have not already created a Hybrid Share folder on C2 Storage, you will be prompted to do so:
     1. Enter a folder name¹ and set a folder quota².
     2. Click Create.
     3. Enter and confirm an encryption key.³ Click Next.
     4. Click Yes to confirm and download the encryption key.
   • If you have already created one or two Hybrid Share folders on C2 Storage, select one that you want to initialize or to mount. Click OK.
     • If the Hybrid Share folder is Uninitialized, enter and confirm an encryption key.³ Click Next. Then, click Yes to confirm and download the encryption key.
     • If the Hybrid Share folder is Initialized, enter or import the encryption key for decryption.
7. Set up the Hybrid Share folder's local information:
   • Enter a folder name.¹ The mounted folder can have the same or a different name as the corresponding Hybrid Share folder.
   • Enter a description. This field is optional and limited to up to 64 displayable Unicode characters.
   • Select a Btrfs volume to mount the Hybrid Share folder.
8. If needed, enable one or more of the following options. Click Next when done.
   • Hide this folder in "My Network Places": Enabling this option keeps the Hybrid Share folder from appearing under "Network" in Windows File Explorer.
   • Hide sub-folders and files from users without permissions: Enabling this option prevents users without read privileges from accessing the sub-folders or files within the Hybrid Share folder via the SMB protocol.
   • Enable Recycle Bin: Enabling this option allows deleted files to be stored in the #recycle sub-folder for future retrieval needs. Files in this sub-folder are synced to the Hybrid Share folder. You can limit the access of the recycle bin to only users belonging to the administrators group.
9. Specify a reserved local cache size.⁴
10. Confirm settings:
    • To finish initializing an uninitialized Hybrid Share folder:
      1. Click Next.
      2. Configure user permissions. Click Done.
    • To finish mounting an initialized Hybrid Share folder, click Done.
11. Use File Station, Synology Drive, or the supported file protocols (SMB, AFP, NFS, and FTP) to store and access data in your Hybrid Share folder.⁵

You can convert an existing shared folder and migrate its data to a Hybrid Share folder on C2 Storage. The Hybrid Share folder becomes initialized during the conversion process.

1. Go to DSM Control Panel > Shared Folder.
2. Select the shared folder you want to convert.⁶
3. Click Action > Convert to Hybrid Share Folder.
4. Click Start.
5. Click Allow to grant your Synology NAS access to C2 Storage.
6. Do one of the following:
   • If you have not already created a Hybrid Share folder on C2 Storage, you will be prompted to do so:
     1. Enter a folder name¹ and set a folder quota.²
     2. Click Create to confirm.
   • If you do not have any Uninitialized Hybrid Share folders on C2 Storage, create one:
     1. Click the Create button.
     2. Enter a folder name¹ and set a folder quota.²
     3. Click Create to confirm.
   • If you have already created one or two Hybrid Share folders on C2 Storage, select an Uninitialized folder. Click OK.
7. Enter and confirm an encryption key.³ Click Next.
8. Click Yes to confirm and download the encryption key.
9. Specify a reserved local cache size.⁴
10. Click Convert to confirm settings and initiate the conversion.⁷