To maintain data integrity and to prevent data loss, it is important to follow the proper shut down and startup procedures while stopping or starting a node or a cluster.
Improper shutdown of multiple nodes individually, or if multiple nodes within a HyperScale cluster goes down simultaneously in an ungraceful manner, data integrity issues can occur, which can result in data loss and restore failures.
In such situations, run a Data Verification job with the Verification of existing jobs on disk and deduplication database option selected from the storage policy copies associated with HyperScale Cluster, as soon as the nodes are restarted. For more information about running the Data Verification job, see Performing a Data Verification Operation on Deduplicated Data.