I saw a cheap Samsung T7 2TB SSD and thought that could be plugged in as a semi-permanent extra drive. Would it be risky to edit from this either using original 4K or proxy footage? The other advantage of this would be as daily back-up for system and other app info (admin docs, email, etc) which at the moment I only do every few days.
So, you deal with large volume files, need a lot of storage, daily backup is desired and you've got 2 computers you'd like to have access to this, plus you are concerned about whether it's 'risky' to edit from a single drive (due to potential for drive failure?).
Hard to believe the term NAS (network attached storage) hasn't entered the discussion. I don't own one; I've been researching options, particularly UGreen offerings. NAS could...
1.) Offer expandable high volume storage.
2.) Accessible by both Macs.
3.) In a RAID 5 setup let your data survive failure of one of the drives. (People will tell you to still have a separate backup for your RAID array).
4.) Let you use HDDs, SSDs, or mainly HDDs with the addition of SSDs (such as for caching).
5.) Some offer pretty fast connection options, such as 10-gigabit ethernet, USB-C or Thunderbolt.
6.) Accessible online from most anywhere you travel without hauling the NAS with you.
7.) Additional functionality - like making it a server for some of your video files.
One I researched:
UGREEN NASync DXP4800 4-Bay Desktop NAS, Intel N100 Quad-core CPU, 8GB DDR5 RAM, 32G eMMC, 2 * 2.5GbE, 2 * M.2 NVMe Slots, 4K HDMI, Network Attached Storage (Diskless)
To be fair, by the time you bought, say, 3 12-14 terabyte server/NAS-class hard drives (e.g.: Seagate Ironwolf or Ironwolf Pro) and a 1 or 2 terabyte SSD (or two), the cost would be drastically more expensive than just buying that 'cheap Samsung T7 2TB SSD.' What I'm proposing is less a simple solution to a simple problem and more an expansive, multi-faceted system to not only solve that problem but enhance other areas.