Rainer Orth wrote:
> I'm well aware that this is no Solaris 10 support list and am posing the
> question via our regular support channels as well, but hope to get an
> answer quicker this way:
> 
> I'm starting to test a J4400 with 24 300 GB SAS disks as an alternative to
> our current HW-RAID based storage infrastructure (SE3510FC and ST6140) for
> use on an X4200 M2 fileserver running Solaris 10 U5 with ZFS.  When I read
> through the release notes for the J4400, I was dismayed to notice that
> currently neither the second SAS I/O Module nor SAS Multipathing are
> supported.
> 
> The Just the Facts for the J4400 indicate that SAS multipathing support
> will be available in Q3 CY2008, which is almost over.  This seems to
> indicate that mpxio support in mpt is the only hurdle for SAS multipathing
> and there are no problems (firmware or otherwise) with supporting the
> second SIM.  I'm a bit astonished that Solaris 10 support is so late, since
> mpt mpxio support seems to have integrated into Nevada in April 2007
> already.
> 
> Can anyone shed some light on the situation here?

That seems more like a documentation problem than anything
else, unless I'm very much mistaken.

I delivered the backport of MPxIO support for mpt(7d) to
the S10 Update 5 gate quite some time ago. You will need
to have at least the -14 revs of 125081 (sparc) or 125082
(x64) installed in order to get this feature.

The Multipathing admin guide was definitely updated to include
the relevant information - I know this because I wrote the
necessary changes myself :)

SATA MPxIO, on the other hand, is not quite ready, though
it is very close. I don't have an ETA for you on when this
feature will be available, sorry.


James C. McPherson
--
Senior Kernel Software Engineer, Solaris
Sun Microsystems
http://blogs.sun.com/jmcp       http://www.jmcp.homeunix.com/blog
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