These types of discussions should be taken up with IB technology / OEM vendors directly as they have nothing to do with development.

Mike


At 06:28 AM 10/15/2005, Mohit Katiyar, Noida wrote:
Hi all,
Sorry previous mail got scrapped due to HTML pictures so  now with text
pictures
I just cant clear a doubt about IB.
In the first figure given below the max speed that can be obtained
between the client and the IO storage is 2Gb/s

Client --------|
Client --------|                          |--- FC Switch---|
  .                 |                      |                       |
  .                 |---FC Cables--|                    |-----I/O storage
  .                 |    Each client     |                    |
Client --------|         connected       |--- FC Switch---|
                          To both switch


                                       Figure 1

 

While in the figure given below the client to IB FC gateway speed is >
10 GB/s and from Gateway to I/O storage is 2GB/s and if port aggregation
is applied at gateway then 4GB/s. So the total effective speed from
client to I/O storage can max be reached at 4GB/s

            IB cables 
Client --------|
Client --------|                                         |----- FC
Switch---|                                                   
  .                 |    IB cables                      |
|                                  
  .                 |------------IB FC ------ |               |---FC
Cables------I/O storage
  .                 |               Gateway/Router |
|       
Client --------|                                         |----- FC
Switch---|      


                                                Figure 2

 

So can anyone explain me am I correct in my approach? Are there any
other advantages in shifting from figure 1 architecture to figure 2
architecture?

It does not seem any advantageous in shifting from FC SAN to IB FC SAN
through such a pattern?

Can anyone help me in deciding about this??

 

 

 

Thanks in advance

 

Mohit Katiyar
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