One of the most important steps in planning for an iSCSI SAN is properly determining the size of the SAN solution required then sizing the network infrastructure appropriately to allow for current AND future growth. I am currently working a whitepaper that will be released soon that looks at Layer 2 switches such as the PowerConnect 54xx Series and helps in determining if a layer 2 network solution (and the PC54xx in particular) can handle a SAN of the size you are looking at.

How many ports does it take to actually implement an EqualLogic SAN?

Working with the Dell EqualLogic engineering team in Nashua and with the PowerConnect team here in Round Rock, I came up with a quick formula to determine the number of ports you need:

(([#Arrays]x 6) + ([# hosts]x 2) + ([#Active PSArray Ports] x 2))
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2


For the details you will have to wait for the full paper, but thought you might find this of use.

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