Which of the following uses IP networks that enable servers to access remote disks as if they were locally attached?

The correct answer is iSCSI, which stands for Internet Small Computer Systems Interface. iSCSI is a protocol that uses IP networks to facilitate the linking of data storage facilities. It allows servers to access remote storage devices over a standard Ethernet network, making remote disks appear as if they were directly attached to the server. This capability is significant for building storage area networks (SANs) because it provides a cost-effective way to expand storage capacity without the need for specialized hardware.

iSCSI encapsulates SCSI commands into IP packets, enabling communication between servers and storage arrays across long distances. This is particularly advantageous in cloud environments and virtualized infrastructures where flexible, scalable, and easily manageable storage solutions are needed.

In contrast, other options such as SAS (Serial Attached SCSI) and SATA (Serial ATA) are standards for connecting storage devices directly to servers. These connections typically involve physical cabling and do not utilize IP networks for remote access. Fibre Channel, on the other hand, is a high-speed network technology primarily designed for storage networking; while it provides faster speeds than iSCSI, it requires specialized cabling and hardware. Therefore, while these other options have their uses in storage connectivity, they do not offer the same level of flexibility and