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Razvan_Cosma's avatar
Razvan_Cosma
Level 3
11 years ago

upgrade master without downtime

Hi - reading through the most recent docs (7.6 at the time), several HA solutions are described, none though that would allow a straightforward upgrade (even for minor release numbers) without bringi...
Backup and Recovery
NetBackup
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Upgrade
  • Jaime_Vazquez's avatar
    Jaime_Vazquez
    11 years ago

    Exactly how much of a service interruption hit do you think you are going to take? The largest upgrade effort involves going from a 7.5.0.X installation to a 7.6.0.X installation. The reason for that is because the Sybase engine used is upgraded from V11 to V12. That causes NBU to perform some actions on the databases to be consistent. The larger the database files, the longer the upgrade takes. Some time is also spent making a backup of the running system environment in case it needs to be downgraded. 

    But, again, from my experience, we are talking less than an hour for this, unless there are some very serious mitigating circumstances. 

Razvan_Cosma's avatar
Razvan_Cosma
Level 3
11 years ago

Hi - and thank you for the clarification, of course what is possible may exceed the vendor's supported implementations and I am looking for a supported one; my question was a different one though: would a setup with catalog replication allow for at least minor release updates of a master by failing to the other node, patching, bringing it back online and patching the other one? Most clustering solutions have this as an option, NB seems to be the only one that explicitly says in the doc you mention "Upgrade NetBackup on the primary site master server by following the standard upgrade procedures (refer to the NetBackup Upgrade Guide)" thus my confusion.