I am looking at a 16-bay SuperMicro chassis. There is the option of
using a SAS HBA with 16 channels (e.g. Avago SAS 9300-16i) and no
expander or a SAS HBA with 4 channels and an expander. Most drives
would be SAS but I might want to fit a couple of SATA SSDs.
Is there a strong technical reason (performance, reliability, uptime)
to prefer one or the other with OmniOS and zfs?
The main technical issue I am already aware of is that one should not
put SATA devices behind an expander.
I am leaning toward the 16 channels and no expander solution since it
feels better from a failure-mode standpoint, because it lessens
contention, and because it should allow use of SATA SSDs.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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