From: Jeff Barratt (jbarratt@COMPSAT.COM)
Date: Fri Jan 31 2003 - 13:55:48 EST
agree with everything, except this:
>>Officially, the Silkworm 12000 is not a director, according to
marketing fluff.
this is not marketing fluff. you can not do concurrent firmware updates
without an interruption of the fabric, hence it is just a big switch, and is
not director class
>>The racks housing the separate fabrics should be on separate power feeds.
and preferably in separate locations..if possible
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU]On Behalf Of
Bill Verzal
Sent: Friday, January 31, 2003 1:51 PM
To: aix-l@Princeton.EDU
Subject: Re: System arch
Please don't take offense at this, but if this is new to you, you should
not do it without a thorough understanding of SAN fabrics, subsystem
device drivers, and switch zoning. This sounds like a pretty substantial
undertaking.
>From a high level, you'll need several core switches and many edge
switches. If you don't know what that means, you should get some
immediate SAN training.
>From there, for the edge connections, you'll need to know traffic loads so
you can distribute the load across the different edge switches.
You'll need to know the total load for any number of edge switches so you
don't overload the core switches.
You'll need to plan for growth in the edge switches.
You'll need at least 2 separate fabrics to ensure at least 99.999%
availability. The new Brocade Silkworm 12000 advertises (10) 9's in a
dual fabric configuration. That is 99.99999999% uptime, which is .00005
minutes of downtime per year. You also have the option of other models of
directors. Officially, the Silkworm 12000 is not a director, according to
marketing fluff.
The racks housing the separate fabrics should be on separate power feeds.
I'll stop here and let others share their thoughts.
BV
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Bill Verzal
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"rohan chandrashekar" <rohanchandrashekar@YAHOO.COM>
Sent by: "IBM AIX Discussion List" <aix-l@Princeton.EDU>
01/31/2003 12:27 PM
Please respond to "IBM AIX Discussion List"
To: aix-l@Princeton.EDU
cc:
Subject: System arch
Hi!
There is a plan to open a new datacentre with about 200-300
servers consisting of Sun/IBM and Windows server. The SAN environment
would be using the Brocade switces, EMC symm, storagetek library,
JNI/Emulex hba's. EMC control centre would be used for storage management.
I have been given the responsibility to plan the lay out the SAN arch.
This is quite new to me. I would appreciate if anyone could give some
feedback on this. Any arch diagram or any documents that could be use to
plan the datacentre.
Thanks,
Rohan
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