Which functionality does the IDSDM card provide?

The IDSDM (Internal Dual SD Module) card provides full RAID-1 functionality, which means it can mirror data between two SD cards. This mirroring offers redundancy, ensuring that if one card fails, the data remains accessible on the other. The RAID-1 configuration is crucial for maintaining data integrity and availability in systems that require high availability and reliability.

The ability to have mirrored storage enables organizations to safeguard their data from the loss that can occur due to hardware failures. This feature is particularly important for systems that rely on continuous uptime and where data loss could lead to significant operational disruptions.

Other options like basic memory support or RAID-5 functionality do not apply to the IDSDM card's purpose. Basic memory support is not relevant since the IDSDM's main role involves storage management rather than memory. RAID-5 functionality, which involves striping and parity for data protection across multiple drives, is also not a feature of the IDSDM card. Additionally, stating that the card has no redundancy features does not align with its role in providing data protection through RAID-1 mirroring.