Fail safe network in Unity

Question

Wanted to check if this second fail safe network configuration is possible in below case We have two I/O modules 4 port on SPA and 4 Port on SPB Ports 0 and 2 are connected to Switch A  from SPA and SPB Ports 1 and 3 are connected to Switch B from SPA and SPB LACP config LACP1 ---> 2 ports SPA0 SPA2 LACP2 ---> 2 Ports SPB0 SPB2 LACP3-->2 ports on SP1 SPA 3 LACP4 ---> 2 ports SPB1 SPB 3 In below article found this line . https://www.emc.com/collateral/white-papers/h15162-emc-unity-high-availability.pdf 'When configuring FSN, ensure the same ports are cabled on both SPs. This is necessary because in case of SP failover, the peer SP uses the same ports. If the cabling does not match, communication issues may occur.' Wanted to know if Fail safe FSN1 with LACP2 and LACP4 would work Failsafe config Lets say FSNO ----LACP1 and LACP3 . Can we create Failsafe say FSN1 another one for LACP2 and LACP4 ?

SKT2 · Answer

the FSN combination would need have participation from both the components what would facilitate HA.

with the proposed LACP the FSN combination would be LACP1+LACP2 & the second set would be LACP3+LACP4.

you failsafe config does not meet "both SPs" as both LACPs only have either SPA or SPB.

Unity

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