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Virtual Connect Flex-10 vesus Virtual Connect FlexFabric for iSCSI, What or When to use ?

 
chuckk281
Trusted Contributor

Virtual Connect Flex-10 vesus Virtual Connect FlexFabric for iSCSI, What or When to use ?

Chuck had an iSCSI quesiton on Virtual Connect:

 

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Can someone help clarify Why or When to use Virtua Connect FlexFabric for iSCSI

rather than using VC Flex-10 … Somehow I don’t see the interest

of doing iSCSI on VC FlexFabric !  Am I missing something ?

 

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Vincent replied:

 

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No advantage for VC FlexFabric  I can think of,  if your customer has no requirement for Fibre Channel or Fibre Channel over Ethernet connectivity. Go with Flex-10 in this scenario.

 

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Chuck responded with another question:

 

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Like many, I only learned of the Storage Function being mapped to Physical Function 2 (PF2) when Converged Network Adapters & VC FlexFabric were introduced.  So did this “mapping” of Storage/iSCSI to PF2 also apply to G6 Flex-10 NICs ?

And so is only one iSCSI Flex-Nic supported per G6 Flex-10 port with VC Flex-10 ?

 

Customer was asking if they could keep their iSCSI traffic separate to NetApps and HP storage

from the same Flex-10 port ?  I replied NO for G7 since iSCSI can only be mapped to the CNA’s

PF2 (you’d need an additional CNA Mezz card and VC FF pair)… but for G6 I wasn’t sure ;-!

 

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Chris replied:

 

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The iSCSI offloading (and the FCoE aspect) does not apply to the G6 LOMs… must be the NC551 or similar CNA.

 

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Any other quesitons? Here is the link to the Virtual Connect FlexFabric module site:

 

http://h18004.www1.hp.com/products/blades/components/ethernet/10gb24/index.html

 

Remember, if you do not need iSCSI offloading, any of the FlexNICs can be used for iSCSI traffic. That also goes for the G6 LOMs and non-CNA adapters. iSCSI is merely Ethernet traffic with iSCSI commands as payloads. That's why you can use the VC Flex-10 modules for iSCSI traffic.