Which protocol can be used to access a shared directory on a network-attached storage device?

A customer needs to move data residing in one class of disks to a more appropriate class of disks based on data access patterns without manual intervention.
Which HPE MSA storage technology/feature will meet the customer requirement?

You plan to perform maintenance on several systems in a rack. You need to ensure that the rack does not tip when you are working on the equipment.
What should you use?

In which protocol are REST API requests transported?

What does StoreOnce use to allow independent software vendors (ISV) to be aware of the HPE StoreOnce Backup system and its capabilities without emulation?