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I do have a server featuring a dual port QLogic FC HBA supporting 2/4/8G interface speed. On the other end there is a Cisco Nexus 5020 with N5K-M1008 module supporting 1/2/4G interface speeds. This is a lab setup.

The Cisco module was chosen because the 8G version is much more expensive. As FC SFPs I'd use DS-SFP-FC4G-SW on the Cisco side, but the QLogic currently has 8G HP SFPs.

There are two options now:

  • Using HP 4G transceivers (HP AJ715A) in the QLogic HBA which would likely work
  • Using DS-SFP-FC4G-SW on the QLogic side as well

I am considering that as I do have the Cisco ones but would need to buy the HP ones. Would the Cisco transceivers work (note I am not asking for being supported) on the QLogic HBA?

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  • If it accepts the HP branded ones, it will likely accept the Cisco tagged one as well. If the HP one is multi-rate (and almost always are), it should work at whatever speed both sides can support. (i.e. 4)
    – Ricky
    Mar 13, 2019 at 1:57
  • I was not aware that the transceivers are also multi rate and can go down to 4 if needed. It it hard to find information or datasheet for this transceiver (AJ718A). I will give this a try first and then report back if that works. Thanks!
    – Daniel
    Mar 13, 2019 at 8:40
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    @RickyBeam I found more information here (sfpex.com/aj718a) actually indicating a speed of 1.0625Gbps~8.5Gbps and an application Application: Multi-rate FC. Please post your comment as answer, I'll accept it.
    – Daniel
    Mar 13, 2019 at 8:45

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If it accepts the HP branded ones, it will likely accept the Cisco tagged one as well. If the HP one is multi-rate (and almost always are), it should work at whatever speed both sides can support. (i.e. 4)

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