HA, slave failed

Question

Hi, 
 
 We have a pair of SG650 currently on 9.506-2 and have attempted to update the code by updating the slave 1st, unfortunately this failed and has left the slave in an unusable state, initially it never passed the syncing stage, even after being left for a few days, after a power cycle it now doesn't respond to connection attempts. 
 
 I don't have much experience with Sophos UTM, but wanted to check that the following is a reasonable process to being the HA back up 
 
 power down slave, & disconnect all interfaces. 
 Power up & factory reset. 
 Configure as a HA slave device 
 Connect configured HA interface 
 Wait for sync to complete 
 reconnect all other interfaces. 
 
 Are there any gotcha's to look out for when performing this work? Can I do the initial config via CLI / console rather than the web GUI? 
 
 Cheers 
 
 Rich

emmosophos · Answer

Hello Richard, 
 Thank you for contacting the Sophos Community! 
 Yes, the steps should be fine, I would just if possible to maybe try to re-image and update to the latest firmware if possible and also upgrade the Master. 
 Make sure also the two UTMs are directly connected via the HA link. 
 Not possible to do it via the CLI, only via the GUI. 
 Regards,

HA, slave failed

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