It is  a full disk pool.  The mirror is on Sol 10 which is unhappy if the drive 
doesn't have an EFI label.  So all I needed to do was label it. I don't keep 
spare drives for everything around so there was a week delay in getting the 
drive and I wasn't absolutely sure of the device numbering.  I've not had to 
replace part of a failed mirror before so I missed the replace command.  One of 
my biggest challenges is the system is so reliable I don't do much admin work 
anymore.

I built out a backup server using 4 x 2 TB disks and OI.  It has 4 small slices 
in an rpool mirror and 4 large slices in a RAIDZ2 pool.  Whole disk slices 
would not have allowed that. If and when booting from a RAIDZ pool is possible, 
then admin level disk management can be relegated to history.  But it certainly 
doesn't look to me as if we are there yet. 

 But more importantly why should I trust some programmer who doesn't know what 
I need to make the choices for me?  As an example, in SunOS 4.1 on a 3/60, you 
could double the swap speed by using two swap partitions on different disks.  
The installer didn't support anything like that.

The really sad part is that Hipster 2017.10 is fundamentally unusable on my old 
Internet access host, so now I'm using Windows!  Firefox consumes around 1 GB 
of memory forcing the 2 GB DRAM machine to page like mad.  I haven't had time 
to investigate whether there is a lighter weight browser available for Hipster. 
 I've been configuring a Windows machine to run electronic design  and 
development tools.

I'd love to see things relegated to the history books, but unfortunately, very 
few people seem to read them, so we just get the same mistakes repeated every 
15-20 years.

Reg


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