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I have been reading a lot of warnings about Raid-6 becoming less and less safe to use due to the storage amount per disk as well as array sizes increasing.
What are the best practice limits/when does it make sense to take the economical hit of using Raid-10 instead? (at which size)
We are considering these disk combinations: Hotstorage:
- 10x4TB SSDs
Coldstorage:
- 10x10TB HDDs
- 15x10TB HDDs
- 12x12TB HDDs
Raid-6 would save us a lot of money, yet is it safe to use at those sizes in terms of normal failures and rebuild times.
Thanks
user2693017
Posted 2019-05-31T11:32:35.013
Reputation: 111
2https://www.zdnet.com/article/why-raid-6-stops-working-in-2019/ – CaldeiraG – 2019-05-31T11:40:52.543
Most of your questions are heavily depended on your situation (budget, actual hardware, what happens on those disks and so on). For a general rundown as to why it might be undesirable check @CaldeiraG the question will probably be closed as being opinion based. – Seth – 2019-05-31T12:01:10.877
@CaldeiraG thanks, this article is quite old (2010) do the statements and math still hold true or did the error rate change – user2693017 – 2019-06-01T09:24:14.587
So I guess for SSDs a Raid-6 is pretty safe? – user2693017 – 2019-06-01T09:24:43.063