Help me do backup the right way

[TariqNas]

Basically the story like this:
- I have new 2 hard drive for my terramaster tos6
- main purpose is to create seperate private users accounts for my family for the purpose of backing up their mobile data while maintaining their privacy of course
- question: how do I setup these two hard drive and still ensuring their data is also backed up gain in the second hard drive let's say?
- currently I am not sure if backing up mobile means if I later on delete any images from my phone it will be deleted from the backup on terramaster (which we don't want of course)
- third one, it's 5 family member but it we want one folder to be accessible for all (aka shared for general use if any and anyone of these 5 users can upload on this one folder if they want
* I need your guidance terramaster community

[HeliaWu]

1. 1. You can utilize two hard disks to establish a protected TRAD or RAID 1 array; for further information regarding the array, please refer to: viewtopic.php?t=1723.
2. Deleting data from the phone will not impact any data that has been backed up to TNAS.
3. Once storage pools and volumes are created, a public file is generated by default, granting all users access permissions. However, you have the option to create a new shared folder within the shared folder module of the TOS control panel and assign read and write permissions specifically to these five users.

[AmyNCampbell]

1. 1. You can utilize two hard disks to establish a protected TRAD or RAID 1 array; for further information regarding the array, please refer to: viewtopic.php?t=1723.
2. Deleting data from the phone will not impact any data that has been backed up to TNAS.
3. Once storage pools and volumes are created, a public file is generated by default, granting all users access permissions. However, you have the option to create a new shared folder within the shared folder module of the TOS control panel and assign read and write permissions specifically to these five users.

Thank you for sharing this much needed moment.