NetApp SANtricity is the software that is used to upgrade the system hardware of a StorageGRID system to the latest version of firmware. NetApp SANtricity is a web-based data management tool that enables customers to provision storage systems and perform common management tasks. NetApp SANtricity provides a simple, intuitive, and centralized interface for managing E-Series storage systems, which are used in StorageGRID appliances. NetApp SANtricity allows customers to upgrade drive firmware using the Upgrade Center feature, which displays the current and available firmware versions and guides the user through the upgrade process.
References = Upgrade drive firmware using SANtricity System Manager, Upgrading drive firmware using SANtricity System Manager, Perform the upgrade, Upgrade StorageGRID software: Overview, Perform the upgrade.

S3 Object Lock is a StorageGRID feature that enables a compliant information lifecycle management (ILM) policy to prevent object deletion. S3 Object Lock allows you to apply a retention period and a legal hold to individual objects or object versions in buckets with S3 Object Lock enabled. During the retention period, objects cannot be overwritten or deleted unless the legal hold is in effect. If an object is under a legal hold, it cannot be deleted even after the retention period expires. S3 Object Lock helps you to meet regulatory compliance, privacy, and data protection requirements for your object data.
References = Manage objects with S3 Object Lock, Example 7: Compliant ILM policy for S3 Object Lock, NetApp StorageGRID ILM on tape