raidz2 a bit big

[Randy Bush]

> For an example: (btw the read speed is fantastic in a mirror and the write
> is notably faster than raidz, but if your I/O is all going to go through a
> gig nic, then it may not matter such as if you are just using it for a
> low concurrent user stash of large files)

it is attached, via gige, to a device which generates data that it
stores.  a nfs-attached compute box is used to crunch the data.  so not
a big win to reorganize, yes?

> zpool create tank mirror aacd0s1d aacd1s1d mirror aacd2s1d aacd3s1d mirror aacd4s1d aacd5s1d mirror aacd6s1d aacd7s1d

ahhhhhhhhhhh!

lose a bunch of space, and gain a lot of speed.  next time.

randy