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July 10th, 2014 07:00
Question for SRDF port protocol
Hi All,
I have 2 vmax 10k and both with FCoE ports, can I use these ports for SRDF link(by direct connect)? if it is supported, can I convert it the same as convert FC ports?
Thanks,
Feng
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AranH1
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July 10th, 2014 12:00
Ethernet FAs cannot be converted via symcli like FC FAs can, it must be done via bin change which will also include updating the Remote Machines Table (this must be done on both arrays).
Technically a direct connection may work but keep in mind that the Symm will create TCP connections from all local RE directors to all remote RE directors in an SRDF group and if you have two direct connect RE ports this would generate an error I believe. If you create an RDF group with just one RE in it that may prevent errors from ocurring, but then you would not have any redundancy or load balancing.
If you are not going to be using 10Gb iSCSI or FCoE in your infrastructure then I recommend you swap out those i/o modules for either 1Gb iSCSI so you can use your existing network infrastructure, or swap them out for FC i/o modules which support direct connect for RDF.
fengli1
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July 10th, 2014 19:00
Thanks for your answer, it's very helpful for me.
I still have another question for the direct connection, the error only cause performence slow down or other issue?
And do SRDF support mix protocol? for example one FC link and one IP link?
Thanks!
AranH1
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July 11th, 2014 08:00
You can have FC and GigE RDF ports on the array but you will have to use separate RDF groups for each transport type.
fengli1
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July 13th, 2014 18:00
Thanks, your answer is helpful.