Different SSDs with ZFS?

[hmmmm]

Hi
I use different SSDs in my Server and I read that it should not be good with ZFS?
Is there an easy to read Article about Storage Solution and what is the best option?
Thanks

 

[fba]

Hi,
if you describe the usecase, then eventually you will get matching suggestions. There is no one size fits all.

 

[Lively5700]

This is just my personal understanding of software RAID. You can use different SSDs, but you need to make sure they are the same capacity. With HDDs I think its slightly more stringent you'll want to make sure they're the same capacity, same RPM, and same cache/buffer size. Again, I might be wrong, but I've not had too much trouble with Frankenstein RAIDs in my HomeLab. I wouldn't use this in a production environment though.

 

[leesteken]

I added an (cheap consumer TLC) to a HDD ZFS mirror (making it a 3-way mirror) and random reads improved at lot. I've been mixing drives in ZFS mirror using consumer and enterprise HDD, consumer SSD and enterprise SSD (with PLP) and it all worked (well enough as can be expected). Then again, I've been using ZFS mirrors for some time and maybe it's been sub par and I just did not notice.

EDIT: Where exactly did you read that? Please provide a link to the source.