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Date:      Thu, 18 Apr 2013 11:55:16 +0530
From:      "Desai, Kashyap" <Kashyap.Desai@lsi.com>
To:        "sbruno@freebsd.org" <sbruno@freebsd.org>
Cc:        "freebsd-scsi@freebsd.org" <freebsd-scsi@freebsd.org>, "Kenneth D. Merry" <ken@FreeBSD.org>, "McConnell, Stephen" <Stephen.McConnell@lsi.com>, "jhb@freebsd.org" <jhb@freebsd.org>
Subject:   RE: New Driver for MegaRaid 6Gb/s and 12Gb/s Card
Message-ID:  <B2FD678A64EAAD45B089B123FDFC3ED760761F4E25@inbmail01.lsi.com>
In-Reply-To: <1366236517.1499.31.camel@localhost>
References:  <B2FD678A64EAAD45B089B123FDFC3ED75E70AC49E1@inbmail01.lsi.com> <1366236517.1499.31.camel@localhost>

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> -----Original Message-----
> From: Sean Bruno [mailto:sean_bruno@yahoo.com]
> Sent: Thursday, April 18, 2013 3:39 AM
> To: Desai, Kashyap
> Cc: freebsd-scsi@freebsd.org; Kenneth D. Merry; jhb@freebsd.org;
> McConnell, Stephen
> Subject: Re: New Driver for MegaRaid 6Gb/s and 12Gb/s Card
>=20
> On Thu, 2013-04-18 at 01:09 +0530, Desai, Kashyap wrote:
> > Ken:
> >
> > I would like to announce about new Driver submission named "mrsas" to
> upstream in near future.
> > As part of MegaRaid device driver development, LSI has developed new
> driver for next generation Raid Controller (6Gb/s and 12Gb/s).
> >
> > I am planning to submit new driver for "6Gb/s Raid Controller" as
> first drop sometimes next month. I will provide upstream patch for the
> same along with "man page of mrsas".
> >
> > As part of continuous development on "mrsas" driver, I will post
> support of LSI's 12Gb/s card on second phase.
> > Dates are not finalized for this, but  I will discuss about this
> before I post my updates.
> >
> > Thanks, Kashyap
>=20
> Is this driver a complement for the current mfi(4) series of drivers or
> a replacement?

As of now mfi driver support upto LSI's 6Gb/s Raid controller (Product name=
 "Thunderblot")
"mrsas" driver is a new driver which will support for "Thunderbolt" onwards=
 product.

So plan is mrsas driver is LSI's recommended driver for 6Gb/s onwards Raid =
controller.

We are also going to provide priority choice for Thunderbolt controller (wh=
ich is currently supported in mfi).
User can choose "mfi" Driver instead of "mrsas" for Thunderbolt Controller.

In summary, mfi will not have any additional support for new controls and i=
t will stop at Thunderbolt.
In long term, if all user switch to "mrsas" for Thunderbolt card, we can al=
so plan to remove support of "Thunderbolt" From "mfi"

Hope my response clarifies your doubts.

~ Kashyap


>=20
> Sean




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