Hello,

Does anyone have any experience in using AIX 5.2 Multi-path I/O
instead of EMC² PowerPath with an EMC² Symmetrix with an FC SAN ?

Regards,

Arnaud FIEFFE

FIEFFE Arnaud wrote:

>Hello,
>
>Does anyone have any experience in using AIX 5.2 Multi-path I/O
>instead of EMC² PowerPath with an EMC² Symmetrix with an FC SAN ?
>
>Regards,
>
>Arnaud FIEFFE
>
>

Not directly, but I believe the EMC provided path control module
(PCM) only support fail over. Check with EMC...

Greg.

Hellor Aranaud,
FIEFFE Arnaud wrote:

> Hello,
>
> Does anyone have any experience in using AIX 5.2 Multi-path I/O
> instead of EMC² PowerPath with an EMC² Symmetrix with an FC SAN ?
Don't take it as 100% true from me, but from what
I know the PowePath option is only to provide multipath
feature in AIX 4.3.3 (and maybe older).
Please read the "Release Notes" for AIX 5.2 to know
limitations and/or new features for multi-path.


>
> Regards,
>
> Arnaud FIEFFE


kind regards,
--
Claudiu Costin, claudiuc@kde.org
Linux-KDE Romania http://www.ro.kde.org

On 9 Apr 2004 06:28:42 -0700, arnaud.fieffe@free.fr (FIEFFE Arnaud)
wrote:

>Does anyone have any experience in using AIX 5.2 Multi-path I/O
>instead of EMC² PowerPath with an EMC² Symmetrix with an FC SAN ?

AIX Muti-Path I/O only supports SCSI attached SANs at this time.
PowerPath supports Fiber attached SANs. That's how I understand it
anyway.

MPIO works fine with EMC arrays.
We have been using if for almost a year now. Your disk at first will be seen as
"Other MPIO FC Disk", but you can get drivers from EMC that will cause them
to be recognized as EMC FC disk, and it will set the proper default queue depth.

Dennis


"FIEFFE Arnaud" <arnaud.fieffe@free.fr> wrote in message news:bd6eeccc.0404090528.4354d881@posting.google.c om...
> Hello,
>
> Does anyone have any experience in using AIX 5.2 Multi-path I/O
> instead of EMC² PowerPath with an EMC² Symmetrix with an FC SAN ?
>
> Regards,
>
> Arnaud FIEFFE

"News Reader" <NewsReader@nowhere1else.con> schreef in bericht
news:iA%dc.52807$8x7.51070@newssvr16.news.prodigy. com...
MPIO works fine with EMC arrays.
We have been using if for almost a year now. Your disk at first will be
seen as
"Other MPIO FC Disk", but you can get drivers from EMC that will cause them
to be recognized as EMC FC disk, and it will set the proper default queue
depth.

Dennis


"FIEFFE Arnaud" <arnaud.fieffe@free.fr> wrote in message
news:bd6eeccc.0404090528.4354d881@posting.google.c om...
> Hello,
>
> Does anyone have any experience in using AIX 5.2 Multi-path I/O
> instead of EMC² PowerPath with an EMC² Symmetrix with an FC SAN ?
>
> Regards,
>
> Arnaud FIEFFE

I think it's only for symmetrix (right?).
We tried to make this working on Clariion CX600 without result.
It's not supported yet either.

Regards,
Geert

"Geert" <NOSPAM.geert.mail@planet.nl> wrote in message news:c5bcpi$idn$1@reader11.wxs.nl...
> "News Reader" <NewsReader@nowhere1else.con> schreef in bericht
> news:iA%dc.52807$8x7.51070@newssvr16.news.prodigy. com...
> MPIO works fine with EMC arrays.
> We have been using if for almost a year now. Your disk at first will be
> seen as
> "Other MPIO FC Disk", but you can get drivers from EMC that will cause them
> to be recognized as EMC FC disk, and it will set the proper default queue
> depth.
>
> Dennis
>
>
> "FIEFFE Arnaud" <arnaud.fieffe@free.fr> wrote in message
> news:bd6eeccc.0404090528.4354d881@posting.google.c om...
> > Hello,
> >
> > Does anyone have any experience in using AIX 5.2 Multi-path I/O
> > instead of EMC² PowerPath with an EMC² Symmetrix with an FC SAN ?
> >
> > Regards,
> >
> > Arnaud FIEFFE
>
> I think it's only for symmetrix (right?).
> We tried to make this working on Clariion CX600 without result.
> It's not supported yet either.
>
> Regards,
> Geert
>
>
>
That may be true, as we are using the symmetrix type and set to use point to point instead of fabric

Claudiu Costin <claudiuc@kde.org> wrote:
> Hellor Aranaud,
> FIEFFE Arnaud wrote:

> Don't take it as 100% true from me, but from what
> I know the PowePath option is only to provide multipath
> feature in AIX 4.3.3 (and maybe older).
> Please read the "Release Notes" for AIX 5.2 to know
> limitations and/or new features for multi-path.

No there is a power path version for 5.2, power path can spread the load
between interfaces (rather MPIO that only provides fail over).



Yves.
----
http://www.cuug.ab.ca/~dorfsmay
http://www.SollerS.ca