but, i heard research by Alvin Cox, JEDEC, that SSD drive is not safer to keep your data and will be lost in a couple of months if not turned on because SSD frive have limited life where different like HDD in general. so dwyor
What would be the point of running a full node on a separate if you think you might have to completely unpowered it for months at a time?
If you just plan on running it occasionally twice a year just use your usual dive and then get rid of the data till next year.
When SSD hard disk has technical problems, you will lose data in it forever because it is impossible to recover data stored in SSD. It is worse than HDD in data recovery and technical fixing.
If you want to store Bitcoin blockchain data, choosing HDD is better than SSD.
Blockchain data is available from thousands of nodes, there is nothing that is permanently lost because of a single drive failure, that's actually the sale point of a decentralized system, you lose the blockchain data on a failed drive you just put in a new one and resync from the network. Far easier than trying to recover it from a broken HDD.
Anyhow, just go with a standard 1 TB SSD like the EVO series from Samsung, it's $80 right now and you won't need more space this decade.
I don't know what is the maximum age for the SSD?. but when read that article, 2 years is the maximum reached. so this is very inconvenient when running the bitcoin wallet is limited at that time and moving to a new SSD when reached maximum after 2 years.
I bought my desktop SSD on 08.03.2018 according to the invoice in my email, HDD Sentinel says 1689 days and 15 hours of power on time, so, you can safely put 5 years minimum there.