Forum Discussion

Mike757's avatar
Nov 22, 2021

DSC sync-failover between vCMP guests in different hardware

Hello,

 

I'm preparing a migration and have a question about DSC support for a mixed hardware scenario:

 

  • 2 VIPRION chassis
  • each chassis has a single B2100 blade
  • each blade has 3 vCMP guests
  • DSC sync-failover is configured between vCMP guests hosted in those blades
  • each blade will be replaced by a B2250, but the configurations won't change

 

I'd like to do this without downtime, but there is a crucial step, when one of the blades has already changed to a B2250 and the other is still a B2100: will vCMP guests based on different hardware be able to join in a DSC sync-failover group?

 

Thanks in advance!

Mike

  • yes that is possible, see:

    https://support.f5.com/csp/article/K15496

    Starting in BIG-IP 11.4.0, the BIG-IP system supports high availability (HA) features, such as ConfigSync and failover, between different hardware platforms.

    normally i would point out to size against the less powerful system. but i believe you wont run like this for long.

  • yes that is possible, see:

    https://support.f5.com/csp/article/K15496

    Starting in BIG-IP 11.4.0, the BIG-IP system supports high availability (HA) features, such as ConfigSync and failover, between different hardware platforms.

    normally i would point out to size against the less powerful system. but i believe you wont run like this for long.

  • Hi boneyard,

     

    Indeed the clusters won't stay asymmetric for long - maybe 1 day tops, I hope to migrate one blade one night, the other on the night after that.

     

    Even if config-sync fails, as long as failover works properly I don't think I'll have problems.

     

    Thanks for your help!

     

    BR,

    Mike