Which of the following describe DAS? (Multiple Choice)

Statement 1: FCoE is preferred over iSCSI because it uses fiber optic cables that can be much longer than Ethernet cables.
Statement 2: FCoE is preferred over iSCSI because we do not need any Ethernet switches anymore.

A single-platter or multi-platter disk allows only one head to read and write data at a time.

SAN network-based data replication technology is a storage area network between front-end application servers and back-end storage systems Network (SAN), adding a layer of intelligent switches, the front end is connected to the server host, and the back end is connected to the storage device.

What are the challenges facing traditional data centers? (Multiple choice)