zfs newbie

[Doug Denault]

Following the default 12.2 zfs install I got one pool (zroot) and a dataset for 
each of the traditional mount points. So zfs list shows:

NAME                 USED  AVAIL  REFER  MOUNTPOINT
zroot                279G  6.75T    88K  /zroot
zroot/ROOT          1.74G  6.75T    88K  none
zroot/ROOT/default  1.74G  6.75T  1.74G  /
zroot/tmp            176K  6.75T   176K  /tmp
zroot/usr            277G  6.75T    88K  /usr
zroot/usr/home       276G  6.75T   276G  /usr/home
zroot/usr/ports       88K  6.75T    88K  /usr/ports
zroot/usr/src        670M  6.75T   670M  /usr/src
zroot/var           47.5M  6.75T    88K  /var
zroot/var/audit       88K  6.75T    88K  /var/audit
zroot/var/crash       88K  6.75T    88K  /var/crash
zroot/var/log        820K  6.75T   820K  /var/log
zroot/var/mail      46.3M  6.75T  46.3M  /var/mail
zroot/var/tmp         88K  6.75T    88K  /var/tmp

I had consultant configure another server for us. He set up the disk array 
with one dataset. so zfs list on this system give:

NAME    USED  AVAIL  REFER  MOUNTPOINT
zroot  2.65G  13.2T  2.62G  legacy

>From a sysadmin view I rather like the multiple datasets. Are there advantages 
to one over the other?

_____
Douglas Denault
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