Pretty sure you can swap the IO cards if they are both 10Gb. Go to the support page and do a search for SOLVE - this is a tool that you can use to create procedures, like swapping IO cards - it should let you know if that's possible.

On the Unity there are two built-in ports (ports 2 and 3) that are 10Gb RJ45 connections. There is also the two CNA ports (ports 4/5), which can be configured for either Fiber Channel or ethernet (iSCSI). depending on which SFP you install. I'd suggest that you take a look at the Unity Best Practices Guide - it lists the limits for the different types of ports (max IO/sec). Note that the CNA ports have a lower IOPS rating than the IO Modules for the iSCSI. You don't want to configure a host using a port from the IO Module with a port from the CNA.

With iSCSI, take a look at the UNity iSCSI Best Practices KB article https://support.emc.com/kb/501595

glen

Thank you for your reply!  Just curious, why do you say "You don't want to configure a host using a port from the IO Module with a port from the CNA."  I took a look at the Best Practices guide, and it looks like the 10Gbe CNA ports have the same IOPS as a 2-port 10Gbe I/O card.  We are currently only using 2 ports on the 1Gbe I/O cards, so would it not make sense to switch over to the 2 10Gbe CNA ports if we replace the current switches with 10Gbe?

Thanks again

It depends on whether or not you're using iSCSI or just File for the ports. Look at table 4 - iSCSI on the CNA ports is a bit lower than the IO modules for iSCSI. Table 5 is for FIle (ethernet) only and does not present a problem.

glen