SAS SSD

[NaRvA]

Hi.

Unraid Wiki says "never ever even think about using ssd drives as data/parity" ;)))

OK OK but:

 

1. I assume that above applies to consumer grade SSD's, not something like this right: https://www.samsung.com/semiconductor/ssd/enterprise-ssd/MZILT1T9HBJR-00007/ ?

 

2. If answer to Q1 is "yes you can" so what kind of parity drive will be recommended? One of these 1,92Tb SAS SSDs or maybe just normal ~2Tb SSD or even traditional ~2Tb HDD?

 

3. Last but not least if answer to Q1 is "yes you can" so do i need any cache drive?

 

Thanks

[JorgeB]

13 minutes ago, NaRvA said:

"never ever even think about using ssd drives as data/parity"

This is old, you can use SSDs, just be aware that they can't be trimmed for now, so write performance might degrade over time, especially on cheaper models.

[NaRvA]

Thanks.

And what with questions 2 and 3?

[JorgeB]

I use normal consumer SSDs for my small array, Samsung 860 EVO for data and a WD Black NVMe device for parity, most other users I've seen using SSDs also use consumer models.

 

Cache device is always optional.