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This page documents upgrade procedures for AIStor Server deployments on bare-metal Linux infrastructure. All AIStor software supports non-disruptive upgrades with zero downtime. In optimal environments, cluster-wide upgrades typically complete in under 500 milliseconds with large clusters (1000+ nodes) completing in less than 5 seconds. Upgrade AIStor using DEB or RPM Use these steps to upgrade an AIStor deployment where the server process is managed by systemctl, such as those created using the AIStor DEB/RPM packages.

The following procedure adds a server pool to an existing AIStor cluster running on bare-metal infrastructure. Each pool expands the total available storage capacity of the cluster while maintaining the overall availability of the cluster. A new pool is a set of new nodes and drives that meet the cluster’s erasure set requirements and parity levels. You can use MinIO’s Erasure Code Calculator to check the Erasure Code Stripe Size (K+M) of your new pool to confirm that it meets the EC:M value of current cluster. MinIO strongly recommends seeking an architecture review from MinIO Engineering through SUBNET to analyze potential performance impacts before committing to a new pool for your cluster.

The mc admin cluster bucket import command imports bucket metadata as created by the mc admin cluster bucket export command. You can use this command to manually restore the metadata to the specified bucket on an AIStor deployment. If you specify only the deployment as the target, this command applies the metadata objects to all matching buckets on the target. Syntax Example The following command imports bucket metadata for the myaistor deployment from a file:

Description The mc admin config command manages configuration settings for the AIStor Server. Examples Syntax mc admin config set Sets a configuration key on the AIStor deployment. Configurations defined by environment variables override configurations defined by this command.

The mc admin kms key command performs cryptographic key management operations through the AIStor Key Encryption Service (KES). Syntax mc admin kms key create Creates a new master key on a Key Management System (KMS).

The mc admin cluster iam export command exports IAM metadata for use with the mc admin cluster iam import command. The command saves the output as ALIAS-iam-metadata.zip, where ALIAS is the alias of the AIStor deployment. Syntax Example The following command exports all IAM metadata for the myaistor deployment.