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Danail.Popovski

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5 years ago

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October 30th, 2021 21:00

Dell EMC Metro Node - WAN ISL link bandwidth

Hi,

In order to implement Dell EMC Metro Node active/active cluster for Dell EMC PowerStore systems at two different locations ~80 km apart, besides RTT < 10ms what are recommended values for bandwidth of the WAN ISL links?

Is there any relation between Customer Workload profile (for example 10.000 IOPS, 300 MB/s, Read/Write 80/20, 8 kb block size) and the bandwidth of the WAN ISL link?

Are 2 x 1 Gbps minimum for the Dell EMC Metro Node system or less (for example 2 x 500 Mbps links) can be used?

 

Thanks,  

  • ankur.patel

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    Posted November 1st, 2021 06:00

    In general your WAN bandwidth is supposed to be based on the write bandwidth. So if you have 60MB/s that is the required bandwidth for the WAN. While less than whats supported, you could have the account team RPQ this as what is listed is what was tested.

  • IbnuR

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    Posted February 10th, 2022 02:00

    Hi All,

     

    how should the cabling topology be used for Powerstore block optimized with Metro Node ?

     

    Skenario-1

    IbnuR_0-1644488339776.png

     

    or Skenario-2

    IbnuR_2-1644488461774.png

     

    I'm not sure about scenario-2, because wan cabling should be directed to the network switch.

    please advise,

    Thanks,

  • ankur.patel

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    Posted February 10th, 2022 13:00

    Correct, scenario 1 is correct assuming that your WAN is going through  a switch

  • IbnuR

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    Posted February 14th, 2022 01:00

    thanks @ankur.patel to verify this scenario..

  • IbnuR

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    Posted February 14th, 2022 02:00

    Hi All,

    and regarding the zoning configuration, do all devices at each site (server, metronode, powerstore) need to be zoned ? If yes, are the details as follows.

    Example zoning in each site

    server to metronode
    server to powerstore

    metronode to server
    metronode to powerstore

    powerstore to server
    powerstore to metronode

    SAN switch-1 (top)
    # zone server to metronode
    server_fc0; metronode1_fc0; metronode2_fc0;

    # zone server to powerstore
    server_fc0; powerstore_nodeA_fc0; powerstore_nodeB_fc0;

    # etc

    SAN switch-2 (bottom)
    # zone server to metronode
    server_fc1; metronode1_fc1; metronode2_fc1;

    # zone server to powerstore
    server_fc1; powerstore_nodeA_fc1; powerstore_nodeB_fc1;

    # etc

    Thanks,

  • ankur.patel

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    Posted February 14th, 2022 07:00

    server to powerstore is not needed. 

    server to metronode, metronode to powerstore is all

  • IbnuR

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    Posted February 14th, 2022 22:00

    noted with thanks @ankur.patel 

  • jden

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    Posted February 21st, 2022 23:00

    Also need this. Lets see what happens after apply the solution.

  • ankur.patel

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    Posted February 22nd, 2022 06:00

    This info can be found on the solve desktop under VPLEX admin procedures and configure

    https://solveonline.emc.com/