Hello, everybody. I’ve been looking for a new storage solution. I know, that HDDs are reliable and SSDs are for fast access, but I’ve been an HDD user ever since. I have an SSD, but I only have the OS on it. Likewise, I want to do some basic File operations, as writing documents or copy files. It would also be great if I could use it as a Backup kind of sorts device. It would be great if I could move my data from my old WD-Elements external HDD, quickly, to an intern HDD without any fuss. I just need a Storage medium that’s cheap and good. Do you have any recommendations? Thanks in advance!
SSDs are way more reliable than spinning disks, especially in a laptop that gets banged around. HDDs win in only one category: capacity per price.
SSDs are way more reliable than spinning disks
That’s true, with one caveat: if an SSD fails, it’s usually catastrophically and without warning. HDDs usually give some warning signs before they fail completely (bad sectors, read/write errors, strange noises).
The SSD memory cell failure mode is to retain the last written contents, so I actually don’t think I agree. In the SMART diagnostics, it shows how many of these bad cells are present, which is a reasonable indicator of impending failure from age
One major failure mode of SSDs is that they can corrupt their FTL map. That kills all of the data instantly.
(Now, a major reliability advantage of SSDs is that by being faster, you can also make a backup of them faster. And if backups goes faster, you’re more likely to actually do them. Right? Right!?)
HDDs are for cheap, not for reliable. Anecdotal, but my personal failure rate with HDDs is around 98% while my failure rate with all forms of flash media (including SSDs) is around 2%.
With 1 TB SSDs being available for as little as $20 (not particularly fast ones but still far faster than HDDs), I don’t see a use-case for HDDs at all unless you need dozens of TBs of storage.
Hard drives are not that unreliable, well, so long as you pick the right model.
BackBlaze’s statistics are here: https://www.backblaze.com/blog/backblaze-drive-stats-for-q2-2023/ - they run tens of thousands of inexpensive drives to run their cloud backup service. Some HDDs are much better than others.
That document also links to their SSD statistics (they don’t have that many SSDs yet, so the stats aren’t as good) but while SSDs tend to have lower failure rates, there are some models of SSD that have higher failure rates than HDDs. For example, one Seagate SSD they use has an AFR (annualised failure rate) of just under 2%, but one Toshiba HDD they use has an AFR of only 0.31%. (Another thing to be aware of is that Backblaze’s drives will all be in air conditioned data centres, not in the random temperature/humidity spreads of a PC in someone’s home).
If you look at the stats as a whole generally SSDs have half the failure rate across the board to HDDs, but it varies a lot by make and model. So be careful on which you pick, and take backups :-) For my money, all my PCs (desktop and laptops) are pure SSD setups. My server still uses spinning disks, mainly because it’s older server class hardware with a SAS array.
The main drive should ALWAYS be an SSD these days. Having an SSD drive is the single most important component when it comes to making your PC feel fast. Even when it comes to secondary drives, I’d stick to SSDs, since you can find 2TB SSDs for less than $100 these days.
HDD come into play when you need more than 4TB and have stuff to store that doesn’t need to be fast, like movies, backups, etc. Those are fine on a HDD, as HDDs are still substantially cheaper at that size and you won’t even find >10TB consumer SSDs.
Another thing to consider is noise, HDDs make quite a substantial amount of noise in a modern PC, so a USB HDD that you can disconnect when not in use ain’t the worst idea.
As for reliability, there is no real advantage one way or the other, both can randomly die. Make backups.
I use HDDs for long term and larger storage… my home partition, working partitions and the OS itself are on distinct SSDs.
It would be great if I could move my data from my old WD-Elements external HDD, quickly, to an intern HDD without any fuss.
Take the casing off and remove the hard drive, install it in your computer. Done.
