SSD ZFS

[Walery]

Hello. I want to replace HDD (WD20efax-68fb5n0 2TB) with SSD (Kingston sa400s37 / 480Gb)
And use 4 SSDs as raidz1
Is it correct? Will these SSDs fit?

 

[dylanw]

By using 4 SSDs in raidz1, you will lose roughly a quarter of the usable space, because of parity storage. In this case, rather than 2Tb, the 4SSDs will give you around 1.3Tb. There are calculators online that help you break down raidz setups [1].

[1] https://wintelguy.com/zfs-calc.pl

 

[Walery]

By using 4 SSDs in raidz1, you will lose roughly a quarter of the usable space, because of parity storage. In this case, rather than 2Tb, the 4SSDs will give you around 1.3Tb. There are calculators online that help you break down raidz setups [1].

[1] https://wintelguy.com/zfs-calc.pl

Thanks. I'm wondering how long an SSD can last? Will they die very quickly? The pool will be occupied by about 1Tb

 

[dylanw]

I'd say that has more to do with the workloads of the server than ZFS itself. In general, it's advised to use enterprise SSDs (especially in production) for a multitude of reasons (kingsinton themselves have a good explanation [1]).

[1] https://www.kingston.com/unitedstates/us/ssd/enterprise-versus-client-ssd