1. As said above 3 different copies in 3 different places.
2. Make sure one of them is online, so if you are burgled or theres a fire you have a spare.
3, Backup on a regular basis, so you always have an up to date copy to return to.
4. That data becomes equal to years worth of work. Irreplaceable.
5. Think of ways and places to save.
i) HDD on laptop.[ This should not be your only means of saving, just the work in progress one.
ii) Copy on cloud.- Free or paid.
https://www.techradar.com/uk/news/the-best-cloud-storageiii) Intermediate data on pen drive.- 16-128GB USB 3- vulnerable to being misplaced. Get a reliable brand like Sandisk, although USB can fail.£6-£16.
iv) archived data on burnt dvd rom.- for archiving or temp backup then cheap- old tech, but as a backup £1 or less for 4GB data.
v0 Portable SSD. Fast and reliable but expensive. Prices have dropped massively in last year 50-75%. No moving parts
https://www.amazon.co.uk/s?k=samsung+T5&ref=nb_sb_noss_2Also more rugged i.e survive a fall.
Samsung T5 500gn £95 1TB £135 or you can just get your own caddy for £7 amd put your own ssd in from 240gb £40 500GB £60 1 TB £110.
vi) External HDD- Mechanical drive which means slow and moving parts make less reliable. That said for archiving its fine as you only want it to store the data. 2.5" drive = slower, but portable and dont need power supply 3.5" bigger not really portable but a bit faster.
https://www.amazon.co.uk/s?k=2tb+external+hard+drive&crid=1C1U0LQT33Y5Q&sprefix=2tb%2Caps%2C169&ref=nb_sb_ss_i_3_3Probably 23.5" unless its just going to stay at home. £60-90 for 2TB.
vii) Also see what storage space you will get on your Unis network.
Ways to lose data.
i) Physical loss/ mislaid.
ii) Robbed/ theft/ burgled or fire.
iii) Virus.
iv) Mechanical failure.
v) Accident, spill drink etc, power outage.
https://library.bath.ac.uk/research-data/working-with-data/data-storageIf you have a big hdd or an expensive one you need to withstand it being stolen, forgotten or just dying.
Dont just get the cheapest as some companies such as WD will oiffer better versions with more security or reliability features.
As a lot of information you will have wont need to be accessed all at once?
Long term storage external hard drive, dvd, cloud.
Short term a hdd but my preference would be an ssd, knowing you should back that up every day other day/ week. You are trying to avoid all eggs in one basked. A portable HDD is probably fine, but remember its years worth of work and irreplaceable.
Hope that gives you an idea.
https://www2.le.ac.uk/services/research-data/keep-data/storagehttps://www.bath.ac.uk/guides/deciding-whether-to-store-data-in-the-cloud/