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HP 649281-B21 adapter (InfiniBand/Ethernet) ?

Interopguy
Occasional Visitor

HP 649281-B21 adapter (InfiniBand/Ethernet) ?

Can the HP 649281-B21 adapter (InfiniBand/Ethernet) be used as a regular Ethernet card for iSCSI connectivity?

I'd like to use the above HP adapter as a regular Ethernet card to connect to the array over iSCSI.

5 REPLIES
Torsten.
Acclaimed Contributor

Re: HP 649281-B21 adapter (InfiniBand/Ethernet) ?

Looks like you can:

http://h18004.www1.hp.com/products/quickspecs/productbulletin.html#spectype=north_america&type=html&docid=13078

Single or dual port 40 or 10 Gbps Ethernet

Hope this helps!
Regards
Torsten.

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Interopguy
Occasional Visitor

Re: HP 649281-B21 adapter (InfiniBand/Ethernet) ?

Thank you Torsten,

Yes, it appears that you should be able to based on the spec.

But I wanted to get confirmation from someone that has actually used this adapter to connecte to a 10Gb Ethernet switch and install and configure the iSCSI SW initiator on the Host to connect to a storage array. 

Jimmy Vance
HPE Pro

Re: HP 649281-B21 adapter (InfiniBand/Ethernet) ?

Specs shows it working as Infiniband, Ethernet, or a mix

 

 




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Torsten.
Acclaimed Contributor

Re: HP 649281-B21 adapter (InfiniBand/Ethernet) ?

>> But I wanted to get confirmation from someone that has actually used this adapter to connecte to a 10Gb Ethernet switch and install and configure the iSCSI SW initiator on the Host to connect to a storage array.


Sorry, I only used infiniband cards for infiniband ...

Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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Johan Guldmyr
Honored Contributor

Re: HP 649281-B21 adapter (InfiniBand/Ethernet) ?

Hi, not sure how to check which HP adapter is installed in a server. But looks like the MT27500 is used in 649281-B21 adapter.

 

I've a few Mellanox connectx 3 and 2 based adapters in HP servers with RHEL6 that are in Ethernet mode.

 

 

09:00.0 Network controller: Mellanox Technologies MT26428 [ConnectX VPI PCIe 2.0 5GT/s - IB QDR / 10GigE] (rev b0)
04:00.0 Network controller: Mellanox Technologies MT27500 Family [ConnectX-3]

 

http://community.mellanox.com/docs/DOC-1131

 

  • One can change by echoing ib/eth into the right place in /sys/bus/pci/devices/$PCIID/mlx4_port*
  • With the openibd and script /sbin/connectx_port_config installed there's the URL above
  • if you're using the rdma that comes with RHEL6 one can edit /etc/rdma/mlx4.conf and change between ib/eth.

The ports in these cards are QSFP, so you'll need an adapter between QSFP and SFP+ unless your switch has QSFP ports.