SAS / SAS2..... compatible?
Is it theoretically possible to mix a SAS2 controller with a SAS expander?
We just happen to have this scenario - the expander (which works fine with
an older SAS adaptec controller) is not found and Adaptec (which handle
the new 71605Q raid controller) insists on telling me this is because the
expander is a SA expander and not a SAS2 expander.
We are in the proces of upgrading our infrastructure - so this test case
is not by any means a deaster - but we can not remove certain SAS elements
YET (mostly because not everything is available as SAS2 yet).
I was using my google-fu trying to find an answer but I can not find any
auhorititative document / description about whether this should work in
general.
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