Question

How to setup a iSCSI SAN

Asked by: artradis

We are geeting one Equallogic PS4000 iSCSI SAN (dual controller) with Dell PowerConnect 5424 Gigabit switches supporting jumbo frames.

There will be be 2 Ethernet Gigabit ports (w/ TOE) on each server  connected to two different 5424 Gigabit switches and each controller (total two) on the PS4000 will be connected to seperate 5424 GBE switches (multi pathing). I don't think there are any issues with this setup.

My question is on the IP addressing.

Our LAN is a 10.0.x.x (10.0.0.x local, and 10.0.1.x VPN/remote LAn and remote SAN)

- I was told to create a physically seperated LANs so that the iSCSI and LAn traffic done jam up the LAN - done, using seperate Gigabit switches.

- Is it necessary or better to use a different LAN IP subnet as well? e.g. if LAN uses 10.0.x.x then iSCSI will use 192.168.1.x ??? (take note the iSCSI SAN need to replicate too Geneva iSCSI SAN via VPN.





 

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Asked On
2009-10-07 at 23:54:34ID24794974
Topics

Network Design & Methodology

,

Network Switches & Hubs

,

Storage Technology

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: nhidalgoPosted on 2009-10-08 at 03:08:00ID: 25523588

Why not just use 10.0.0.2 for the SAN local side network. Then you can just added plug a router interface into your SAN switch and make the ISCSI routeable via your VPN.

Reallly it make no difference if you use 192.168.1.x or 10.0.x.x, either way you will need to build the vpn out to make that traffice replicate.

 

by: andyalderPosted on 2009-10-08 at 09:01:43ID: 25526940

If you don't use a seperate subnet for each SAN how will it know which NIC to send the data out of? It might send it out of NIC port one to Equalogic port two when they're not on the same switch, that's assuming you have 2 seperate switches for the SAN with no connection between them.

20120131-EE-VQP-002

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