Recommended HBA for ZFS, contemporary
Dmitry Morozovsky
marck at rinet.ru
Mon Aug 22 16:30:26 UTC 2016
Karl,
On Mon, 22 Aug 2016, Karl Denninger wrote:
> I'm still a fan of the LSI SAS-9211 cards along with (for higher
> density) a SAS port expander. I've been extremely happy with this
> combination with one caveat -- most systems must boot from the actual
> card and not a port on the expander(s) you connect to it due to BIOS
> constraints. They're also crazily cost-effective on-balance.
>
> In practice this means you have 4 ports on the base card available (2
> used for mirrored boot drives, 2 for other things) and the rest of the
> disks go on the expander, or you run more than one card.
>
> Whether you can actually saturate this combination depends on what you
> attach. In large configurations, especially those stuffed with SSDs,
> you can -- at which point something faster such as the 93xx series which
which immediately leads me to the question: what is the driver supporting 9300
in HBA mode? Quick googling does not reveal interoperability, and 9300 is not
in hardware list for FreeBSD yet.
> are materially faster (but still in "host" mode as opposed to any sort
> of "smart", "raid" or "buffered" mode) should be considered.
>
> The "smarter" the card the dumber the results tend to be when ZFS is in
> use, in my experience :)
Yes, I'm well aware of it ;)
Thanks!
--
Sincerely,
D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer: marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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