Allow enclosure awareness and Cross-JBOD virtual disks with only 2 SAS JBOD enclosures
The current storage spaces need at least 3 enclosures to activate this scenario.
It would be nice - if technically possible - to lower the requirement to 2 enclosures for 2way-mirror. Two 60 slots SAS JBOD already allow for quite a nice amount of storage, and a third one isn't always needed.
Christoph Eder commented
@Arthur: depending on your JBOD vendor (we use Supermicro) you might have 2 backplanes with unique IDs in your JBOD. Independently cabling them presents 2 enclosures per JBOD. With 2 JBODS that makes 4 enclosures --> 2 way mirroring via 4 enclosures in 2 JBODs.
Philip Elder commented
I asked for this in 2012 beta then R2 beta and now not so much. :)
The requirement for three is based on the need to have more 50% +1 disk online (as I recall) if one enclosure goes offline. Having two JBODs does not allow for that.