MSA 2050 SAN - Autonegocation

[Sofia12]

Hi,

For a MSA 2050 SAN Dual controller, do HPE MSA 16Gb Short Wave Fibre Channel SFP+ 4-pack Transceiver (C8R24B) use autonegociation in 8GB?

I didn't find any spec about it!

Thanks!

[SUBHAJIT KHANBARMAN_1]

@Sofia12 

As per MSA 2050 quickspec we can understand that C8R24B can be used with this MSA.

https://h20195.www2.hpe.com/v2/GetDocument.aspx?docname=a00008276enw# (Page no 17)

Now  "HPE MSA 16GB SHORT WAVE FIBRE CHANNEL SFP+ 4-PACK TRANSCEIVER" means this SFP max can handle 16GBPS speed but it can be negotiated to 8GBPS as well. It depends on the connected device. It's not possible that manufacturer will make the SFP which will can be restricted to 16GBPS only.

As per genegal industry standard,

• A 32-Gbps optical transceiver can auto-negotiate to 32 Gbps, 16 Gbps, or 8 Gbps.
• A 16-Gbps optical transceiver can auto-negotiate to 16 Gbps, 8 Gbps, or 4 Gbps.

As per CLI guide you can use "set host-parameters" command to do the speed setting.

https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-a00017709en_us (page no 174)

Hope this helps!
Regards
Subhajit

I am an HPE employee

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[SanjeevGoyal]

Hello,

The  C8R24B can be used with this MSA.

I would request you follow the  below documents for more clarifications.

https://h20195.www2.hpe.com/v2/GetDocument.aspx?docname=a00008276enw# (Follow the page no #17)

 https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-a00017709en_us (Follow the page no #174)