I have merged all my files (1.3 million photos for example...)) onto a single 10tb hard drive.
These used to be spread across smaller 2tb drives.
How do I use the 20+ 2tb hard drives that are too small, each as a chain of an incremental back up?
Cheers
You can use Disk Utility to create a RAID 0 consisting of all the 2TB drives. Data is striped across the drives for a performance gain.
You can also create a Concatenated JBOD array, which also combines multiple drives, but in a serial manner (e.g. data is written to drive 1 until it's full, then it spills over to drive 2... drive 3, etc.
Neither offers any kind of redundancy - if any single drive in the chain fails you risk losing all your data.
For increased resiliency you can install the drives into a RAID chassis, using something like RAID5 to provide resiliency against drive failure. Once you have this array, it takes care of presenting a single volume to the host system which you can use, letting it take care of spreading data across the drives.
If you are using Time Machine I suspect that you can't. What you want to do is not a normal requirement. I suggest you carefully check the Time Machine Help files for any further information. If you want to do your backups manually, then it is a matter f what you copy to where.
I have raids already. Based on the 2TB drives. I was looking for a solution like the old backup rewritable dvd drives, where you park one in a drive, it fills up, then park another one, etc. etc, until all data is backed up, then when things change and I put the last disk back in, it updates.
I am a +1 on running a RAID in order to get some redundancy. Possibly get something like a https://eshop.macsales.com/shop/owc-gemini
Backing up 10tb external drives to 2tb drives
