ZFS for raid

Matthew Seaman matthew at FreeBSD.org
Wed Jan 16 14:13:13 UTC 2019

On 16/01/2019 00:33, Paul Schmehl wrote:
> Thank you Shawn, Matthew, John, and Doug for your responses. I will 
> start reading up on ZFS. The advice about an HBA and a small boot raid 
> plus data drives was very helpful as well as the comments about needing 
> plenty of ram.

In my experience, you can just build a zpool and use it to both boot 
from and to hold all your data.  Creating small boot RAIDs is 
unnecessary.  The only exception to this is when you want a zpool that 
consists of so many disks the BIOS cannot see them all, in which case 
you need a smaller pool or somesuch to boot from.

It is generally a bad idea to mix serious usage of ZFS and UFS in the 
same server: the different filesystems will tend to fight with each 
other over access to memory for caching, and performance will suffer.



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