I simply use the 256 GB internal storage of my iPad. 

I use ordinary internal SATA drives, which i connect into PCs with the case open. No external USB enclosures or anything like that

I use ordinary internal SATA drives, which i connect into PCs with the case open. No external USB enclosures or anything like that

I have a 3.5" 500GB drive in a small USB 3.0 enclosure which I use to back up the Windoze machine, but that system doesn't get used often. The main Linux systems all back up using a program called Deja Dup which copies all the contents of the user's home directory to (in this case) one of the Buffalo Terastation Raid 5 network drives.

I have a 1tb ssd that i have but haven't used as my camera that used to use for lighting and other things broke from some goof in the lens gear array.

I don't use one yet, but I will.
All my camera videos are almost 100GB! In a little 500GB hard disk of my computer. That's because the camera is a cheap sport camera, with a heavy apple MP4 encoding, that's for use less CPU cycles of the little camera. An averange video can weight up to 500MB each!

I'll use a 1TB HDD, are cheap and 1TB are sufficent for my media, my photos are saved in 4.7 GB DVDs, but I'll back up my photos to the HDD for an easier access.

I get very nervous about single very high capacity drives, especially once you get over 1TB. That's an awful lot of data to lose if it fails  

I prefer to back up to a network RAID array (see the bottom of our network rack cabinet). Each unit has 4 drives in a RAID 5 configuration, which allows one drive to fail without losing data, and the failed drive can be quickly hot-swapped.

The current ones are only 2TB and are also getting near the end of their useful lives, so we'll be looking to replace them soon. They've not done bad for almost 15 years service  

By the way, anyone looking for long-term external storage, this is one situation where proper hard drives are a better option. SSD's are good for internal storage which is changing rapidly, but for long term archiving of music, photos and the like, a mechanical hard drive is a far better choice. You don't need high speed of access for a backup and SSD's are still a lot more expensive for the capacity. 4TB SSD's are NOT cheap  

If you have the data in one and only copy, only on the backup drive, then its not a backup...



Above 1 or 2TB or so, manufacturers seem to have resorted to shingled recording to save on disk platters... And the reliability of such recording may be questionable. So 1..2TB might indeed be a reasonable limit to the size of worthy backup drives. (BTW, WD Purple drives for CCTV recording still use conventional methods since the shingled writing can't keep up with CCTV recording write throughput demands, but those drives have some other features that may make them not the best option)