ZFS best practices - custom volumes on same or another pool?

1

I’ve got HOST with 3 SSD - 3 zpool, one SSD for ZFS zpool
I run container on zpool1
I wonder where to create custom volumes to gain maximum performance
same zpool1 with container or
zpool2/zpool3 on different SSD’s

1.Are there any penalties when volumes are created on another zpools tha container’s one?
2.What if zpool2/zpool3 are used by another containers?

I assume that volumes such mail spools/logs etc. are much more I/O intensive than containers.

regards

Of course, I assume that I will have to do a detailed analysis but I want to hear your opinions

2

It doesn’t matter where the filesystems come from, you can mix and match without issues.

3

thx

Are there any penalties for mounting 100…1000 custom volumes to one container?
I am thinking about putting all home users into their own zfs datasets

regards

4

You shouldn’t see a performance impact in read/write but tooling that frequently reads the mount table may slow down a bit due to having to read a lot of entries.

That usually only becomes noticeable when you reach into the thousands though.

5

thx for clarification
I am thinking about mounting datasets for mysql db’s data to separate db backup zfs operation
but that’s another story

regards