HP P2000 G3 FC interoperability with 4GB FC switches

[Rodrigo Verissimo]

Hello, i would like to know if there are any issues with the P2000 G3 when accessed by 4GB FC HBAs through a 4GB FC switch (Brocade 4/12 interconnect on a C3000), since the P2000 nominal FC speed is 8GB.

Thank you.

[Johan Guldmyr · Accepted solution]

Hello!

Should be fine. The switch will negotiate down the speed to 4GB unless you have it fixed.
It is probably a good idea to run this with fixed speed.

See http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02006876/c02006876.pdf
page 38 for more details.

[Torsten.]

I have seen such array connecting at 8Gbs to a 8gb switch with only 4Gb SFP - strange.

I prefer to set the P2000 controllers to a fixed speed of 4Gbs instead of auto.

[Johan Guldmyr]

Very strange Torsten. Would that be with AN on both sides?

[Torsten.]

Yes. The switch and the P2k was set to auto, but the sfp was only 4Gbs. Anyway the connection speed was 8 Gbs for 2 ports ...