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Brocade 3900 versus McData Sperion (ES) 3232... - Sun Solaris

Hi: This is not strictly a Sun/Solaris question, but many talented people tuned in have good information to share, so I included the group. Price aside, given a choice between a Brocade-3900 and a McData Sperion(ES)-3232, which would you go with and why. To help you answer, know that two of these will straddle the ends of a 91km DWDM connection, so Buffer Credits are an important consideration. I have calculated the required amount to be about 62 at 2Gbps and a payload of 2Kbytes. Are there any other preferences that you like or dislike as well? TIA Milton Vega ...

  1. #1

    Default Brocade 3900 versus McData Sperion (ES) 3232...

    Hi:

    This is not strictly a Sun/Solaris question, but
    many talented people tuned in have good information
    to share, so I included the group.

    Price aside, given a choice between a Brocade-3900
    and a McData Sperion(ES)-3232, which would you go
    with and why. To help you answer, know that two of
    these will straddle the ends of a 91km DWDM connection,
    so Buffer Credits are an important consideration.
    I have calculated the required amount to be about
    62 at 2Gbps and a payload of 2Kbytes.

    Are there any other preferences that you like or
    dislike as well?

    TIA
    Milton Vega
    com
    Rensselaer Technology Group, LTD
    NYCeyes Guest

  2. #2

    Default Re: Brocade 3900 versus McData Sperion (ES) 3232...

    On 22 Sep 2003 12:59:01 -0700, com (NYCeyes) wrote:
     

    The question is which HBA are you going to use. If you are thinking
    qlogic, then do not use the Brocade switch due to RSCNs. Otherwise, the
    products are comparable.

    If you will be growing into a larger SAN later, then I'd stick with the
    Mcdata, again. The Mcdata core switch is better(if anyone disputes me
    on this go ahead, I won't respond). If you use Mcdata core, obviously
    it's better to have Mcdata edge switches.

    Boll Weevil
    Boll Guest

  3. #3

    Default Re: Brocade 3900 versus McData Sperion (ES) 3232...

    > The question is which HBA are you going to use. If you are thinking 
    What is the exact problem with qlogic and brocade ?

    Thanks !

    Greg G


    Greg Guest

  4. #4

    Default Re: Brocade 3900 versus McData Sperion (ES) 3232...

    "Greg Guenther" <gfg*rem*ix.netcom.com> wrote in message news:<1d8cb.4039$news.atl.earthlink.net>... 
    > What is the exact problem with qlogic and brocade ?
    >
    > Thanks !
    >
    > Greg G[/ref]

    Hi,

    Registered State Change Notifications (RSCNs) can theoretically
    interrupt fc traffic of members of the same zone. RSCNs can be send if
    one HBA connects to the internal switch name server - in fact there
    are HBA drivers outsite that allows to disable that feature. Anyway,
    the most easy way to stop RSCNs impact on other host is to follow one
    golden rule: Never ever build zones with more than one HBA inside.
    I personally have build up approx. 30 SANs over the last 3 years
    (Brocade, McData, Inrange) - ever following that rule, and have never
    seen RSCN problems.

    Rene
    rene.koehnen-wiesemes@systematics-techsol.de Guest

  5. #5

    Default Re: Brocade 3900 versus McData Sperion (ES) 3232...

    de (de) wrote in message news:<google.com>... 
    > > What is the exact problem with qlogic and brocade ?
    > >
    > > Thanks !
    > >
    > > Greg G[/ref]
    >
    > Hi,
    >
    > Registered State Change Notifications (RSCNs) can theoretically
    > interrupt fc traffic of members of the same zone. RSCNs can be send if
    > one HBA connects to the internal switch name server - in fact there
    > are HBA drivers outsite that allows to disable that feature. Anyway,
    > the most easy way to stop RSCNs impact on other host is to follow one
    > golden rule: Never ever build zones with more than one HBA inside.
    > I personally have build up approx. 30 SANs over the last 3 years
    > (Brocade, McData, Inrange) - ever following that rule, and have never
    > seen RSCN problems.
    >
    > Rene[/ref]

    Btw... that same the golden rule I have followed for every SAN
    I have built since 1999 (when I started with a McDada ED1032 switch
    through EMC), and it was very good to point out.

    Thank you for your collective responses and emails directly to me.

    Regards,
    Milton
    NYCeyes Guest

  6. #6

    Default Re: Brocade 3900 versus McData Sperion (ES) 3232...

    I'm a fan of the McData's just because I find them easier to work with. I
    like the nice simple GUI you get with the McDatas and that if you do have to
    do something via CLI it's still fairly intuitive.

    Mark

    "NYCeyes" <com> wrote in message
    news:google.com... 


    Mark Guest

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