To my surprise I discovered today that 3-way boot mirrors are not supported in 11.1-U7
Booting off USB is useful because it uses "free" external USB connections.
With a lot of existing hardware, anything else ends up using connections that could be assigned to storage pool resources instead.
Even though USB sticks are ridiculously crappy...
3-way boot mirror is not supported in 11.1-U7?
Exception Type: MiddlewareError at /system/bootenv/pool/attach/
Exception Value: [MiddlewareError: [EFAULT] 3-way mirror not supported yet]
Booting off USB is useful because it uses "free" external USB connections.
With a lot of existing hardware, anything else ends up using connections that could be assigned to storage pool resources instead.
Even though USB sticks are ridiculously crappy...
3-way boot mirror is not supported in 11.1-U7?