Hello! I'm new to ZFS and have some configuration questions.

What's the difference, performance wise, in below configurations?
* In the first configuration, can I loose 1 disk? And, are the disks striped to 
gain performance, as they act as one vdev?

* In the second configuration, can I loose 2 disks (one per raidz group)? Since 
dynamic striping is done across vdevs, will this configuration have better 
performance then configuration 1?

[b]Configuration 1[/b]
 raidz
  - dev1
  - dev2
  - dev3
  - dev4
  - dev5
  - dev6
  - dev7
  - dev8
  - dev9
  - dev10

[b]Configuration 2[/b]
 raidz
  - dev1
  - dev2
  - dev3
  - dev4
  - dev5
 raidz
  - dev6
  - dev7
  - dev8
  - dev9
  - dev10
 
 
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