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this post was submitted on 10 Jul 2024
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Someone more knowledge than me can correct me, but I'm pretty sure you could buy a newer bigger drive to replace an older drive. You obviously wouldn't get the full capacity as it would be limited by the other older slower drives. However, you would get a, theoretically, more reliable drive than a random one on eBay. Then as you replace older drives eventually you could have increased size.
Caveat is that it will put stress on the old drive to rebuild, however you'd get that with any drive you put in. General wisdom I saw says to replace all the drives. Although that can be expensive.
I'm any case make sure you have a backup before you do any of the changes.
I have not had an issue mixing and matching drives in a hardware or software RAID. Just needs to be at least as big as the previous.
I have had issues with non-vendor drives in Dell and/or HP systems.
(I am a pro, but not your pro.)
Damn I wish I would've known sooner. Isn't there a concern of not matching the same drive similar to how you can't mix and match RAM sticks?
You absolutely can mix and match RAM sticks, as long as their specs are the same. It's not necessarily recommended as there might be compatibility issues, but usually ends up working just fine.
I think mixing RAM sticks is mostly fine today. Maybe you won't get 100% performance but I don't think it will be very noticeable. You may still run into issues with some capacity combinations depending on the mainboard/cpu. Regarding clock speeds usually all run on the clock of the slowest one.
Matching RAM latency also matters for performance.
When using different capacity RAM channels matter so take care on the order of population.
This really depends on your exact setup and might not be true for hardware raid.
Generally speaking, I would look into replacing that ageing raid with something more modern like Btrfs or ZFS where you are significantly more flexible with the drives used.
Not that I'm aware of, but I'm not as knowledgeable as someone else. I'm hoping some quick research or someone better can help. If I remember I can look later on this evening, but can't at the moment.