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High Availability and Data Protection with Dell PowerScale Scale-Out NAS
Executive summary High availability and reliability at the petabyte scale High availability with OneFS OneFS fault tolerance
File system journal
Protective device failure
Data integrity
Protocol checksums
Dynamic Sector Repair
MediaScan
IntegrityScan
Fault isolation
Accelerated drive rebuilds
Automatic drive firmware updates
Rolling upgrade
Nondisruptive upgrades
Parallel upgrades
Rollback capable
Performing the upgrade
Data protection
High availability and data protection strategies Summary OneFS glossary

Rollback capable

Rollback capable

  • Upgrade rollback provides the ability to return a cluster with an uncommitted upgrade to its previous version of OneFS.

    DiagramDescription automatically generated

    Figure 12.    OneFS nondisruptive upgrade states