The HPE Alletra 5000 is the recommended storage family for a hybrid array that utilizes both SSD and HDD media, supports up to 512TiB of raw storage, and provides centralized cloud-based management. The Alletra 5000 series is designed to deliver a blend of performance and capacity, making it ideal for hybrid storage needs. Additionally, it integrates seamlessly with HPE's cloud-based management tools, offering a simplified and unified management experience across on-premises and cloud environments.
Reference:
HPE Alletra 5000 Overview
HPE Hybrid Storage Solutions

When moving from an HPE StoreOnce backup appliance to HPE GreenLake Backup and Recovery, the HPE StoreOnce appliance can still be utilized as an on-premises Protection Store copy target. This means that the existing StoreOnce hardware can be integrated into the new GreenLake Backup and Recovery environment, allowing for on-premises data protection and efficient backup processes while leveraging the cloud capabilities of GreenLake for additional flexibility and scalability.
Reference:
HPE GreenLake Backup and Recovery
HPE StoreOnce Integration

In a meshed fabric SAN topology, the E Port (Expansion Port) type is used on SAN switches. E Ports connect to other switches within the fabric, allowing for inter-switch links (ISLs) that enable communication between multiple switches in the SAN. This topology is essential for creating a scalable and resilient storage network, as it allows multiple paths for data to travel between different nodes in the SAN.
For more information, refer to:
* HPE SAN Solutions