[RndTbl] New ZFS layout guide, looks well-done

[eh at eduardhiebert.com]

While much of the technical detail is beyond my "kenn" as my first LOL 
of the day, thanks Adam with sincere appreciation of matters you know 
that I do not "It is worth noting that if you run your filesystems VERY 
full (>90%) you should not choose ZFS – it really, really, really likes 
to have a lot of room to rearrange things, even though it basically 
never does any rearranging."

Eduard

On 2023-12-16 23:22, Adam Thompson wrote:
> As a happy user of FreeNAS (and now TrueNAS) for many years, I
> definitely recommend it.
> 
> However - it is NOT just another UNIX system with ZFS and Samba,
> it’s a self-contained appliance that happens to be based on FreeBSD
> and ZFS.  There’s limited ability to get under the hood, which can
> be frustrating to some people, but at the same time it’s fascinating
> to see how iX took a commodity OS and filesystem and turned it into a
> commercial-grade appliance.
> 
> IIRC, it took until 2019 for x86-architecture systems to beat the Sun
> E450 running ZFS (IIRC 4x450MHz UltraSPARC, 3GB RAM, and I think 14 x
> 9GB 7200rpm UltraSCSI disks) that I had heating my living room circa
> 2004.  Part of that was the system architecture (both PCI-based, but
> VERY different!), the memory architecture, the I/O architecture, and
> the OS, but the filesystem definitely played a part in it, too.
> 
> The MUUG server runs ZFS for this reason, and it does the job quite
> well.  (No filesystem handles running out of space well; that wasn’t
> ZFS’s fault anyway.)  It is worth noting that if you run your
> filesystems VERY full (>90%) you should not choose ZFS – it really,
> really, really likes to have a lot of room to rearrange things, even
> though it basically never does any rearranging.
> 
> -Adam
>