RAW conversion and downscale is it possible?

[a_c_skinner]

I think that is a red herring as any backup that isn't powered up regularly to keep it current is of low utility. The fears about SSDs not under power seem over emphasised and the time needed to lose data much longer than we might have feared.

One external SSD for files you use plus two HDDs for backup makes sense though it really is the minimum backup copies. How you do it is up to each person but the backups need to be updated frequently enough and disconnected from power and data when not actually in use.

This isn't critical of anyone on here but there is a steady flow of threads on here by people content to spend large amounts on camera gear, to bang off loads of pictures, to save most of them but then seem curiously cautious about backups and backup hardware.

Finally I've not seen good data on SSD vs HDD reliability, but with enough copies it isn't an issue either way.

--
Andrew Skinner

 

[Quarkcharmed]

Going back to HHD is not an option: less reliable than SSD

No, HDDs are about the same reliability for your purposes, but still much cheaper than SSDs (cost per storage capacity unit)

I'd say it's the other way around if the drive isn't used frequently. As SDD may loos data if they are without power for a longer period.

It's an old myth amplified on the web on many sites. It was debunked many years ago:

Debunked: Your SSD won’t lose data if left unplugged after all

“People have misunderstood the data,” said Seagate sources at the heart of an Internet kerfuffle. Find out the truth here.

www.pcworld.com

SSDs may get data corrupted from time to time, but not because of being without power. But HDDs may also experience data loss.

For ordinary consumers like us, HDDs are better for backups just because of the price.

 

[J A C S]

For ordinary consumers like us, HDDs are better for backups just because of the price.

Right. Also, the probability of HDDs or SSDs going bad is already low, and if you use two, you square an already low number while doubling the price. Then the probability of losing data with a dual backup, and why not even triple, is negligeable in both cases, while the price remains a factor.

To put it in different terms, a linear increase in price buys you an exponential decrease of the rate of failure in each case. Very soon, the price is the only meaningful factor left. For the same price, HDDs would buy you much better reliability.

 

[al404]

I need to search my backup because they do include my photo and my work documents

Since TM does incremental backups is possible to recover a previous version of a document and I may need to do it from time to time and in that case I ned to search the disk

with HHD is very slow with SSD if pretty fast, so FOR ME HHD time is over