have been expressing an error, while patching hosts an specific cluster "The host returns esxupdate error codes:30. Check the update Manager log files and esxupdate log files for more details". checked for all possibilities from the web but no luck. Please refer some stuff in fixing this.
Update error 30 is related to bootbank not found
If you can go to vmkernel.log and check for bootbank keywords, it might help if you encounter same issue. You can also check if the bootbank is accessible by cd /bootbank
I have seen this with SD cards losing connectivity
If you are using local harddrive, try to update the BIOS/driver/firmware for your localdrive
we suspected the MTU values in the UCS (its set to 9000) others are 1500 (working hosts). after reset the value from 9000 to 1500 there no use. Also by changing the boot value also seems will not fix the issues.
Yes we are in boot from SAN., please provide suggestions for fix this issues.
with the first step in the kb the issue was partially resolved, we are observing state as the boot bank backups every hour, where the command flush the boot bank to correct LUN.