The first issue is that the 4B is unlikely to be able to run two bus powered SSDs at the same time. Max current with the official PSU available to bus powred USB devices is a combined total of 1.2A. You'll almost certainly need a self powered enclosure for one of the drives or a self powered USB 3 hub betwwen Pi and drive(s).
Secondly, do you mean by USB to SATA cable? The 4B doesn't have native SATA.
The full version of RPiOS includes the SD card Copier tool. Use that to copy the current 480GB drive to one of the 120GB ones. Remember to tick the box to use new PARTUUIDs.
Boot from the 120GB SSD, connect the 480GB drive, launch gparted to delete, create, and format partitions.
You need to backup both the boot and root partitions. If they're otu of sync your backup won't boot.
Consider using btrfs (or another copy on write snapshotable file system) for the backup target. Rsync to the backup target then create a new snapshot. Delete any snapshots more than 7 days old.
Won't be compressed but will take less space than seven full backups of 120GB.
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Building A Pi Based NAS
You may also find these to be of interest:
Cron – A Beginner's Guide
Using fstab A Beginner's Guide
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Secondly, do you mean by USB to SATA cable? The 4B doesn't have native SATA.
1. Migrate Data: Transfer all data from the 480GB SSD to one of the 120GB SSDs. This new 120GB SSD will become the new primary boot drive with all my current data and configurations.
The full version of RPiOS includes the SD card Copier tool. Use that to copy the current 480GB drive to one of the 120GB ones. Remember to tick the box to use new PARTUUIDs.
2. Partition the 480GB SSD: Create two partitions on the 480GB SSD—one partition of 120GB and another with the remaining space (size can be changed to suit the number of backups).
Boot from the 120GB SSD, connect the 480GB drive, launch gparted to delete, create, and format partitions.
3. Set Up Backups: Implement a nightly backup of the 120GB SSD to the newly created partition on the 480GB SSD. I’d like to keep compressed backups for the last 7 days if possible.
You need to backup both the boot and root partitions. If they're otu of sync your backup won't boot.
Consider using btrfs (or another copy on write snapshotable file system) for the backup target. Rsync to the backup target then create a new snapshot. Delete any snapshots more than 7 days old.
Won't be compressed but will take less space than seven full backups of 120GB.
I know nothing about Jellyfin but4. Configure NAS: Use the remaining space on the 480GB SSD as a NAS for Jellyfin and other files.
[shameless self promotion]
Building A Pi Based NAS
You may also find these to be of interest:
Cron – A Beginner's Guide
Using fstab A Beginner's Guide
[/shameless self promotion]
Statistics: Posted by thagrol — Fri Jul 26, 2024 12:06 pm