The correct answer is C and F. iSCSI and FC.
iSCSI and FC are protocols that the company can use to share the disks between the nodes of the cluster to access the same LUN. A LUN, or logical unit number, is a unique identifier for a block of storage space that can be accessed by a host system or a cluster of systems. iSCSI and FC are both block-level protocols that allow transferring data between the storage device and the host system or cluster over a network.
iSCSI stands for Internet Small Computer System Interface, which is a protocol that uses TCP/IP to send SCSI commands over an Ethernet network. iSCSI can provide a low-cost and flexible solution for sharing disks between the nodes of the cluster, as it does not require any special hardware or cables, and can use existing network infrastructure. iSCSI can also support encryption and authentication for security purposes .
FC stands for Fibre Channel, which is a protocol that uses optical fiber cables to send SCSI commands over a dedicated network. FC can provide a high-performance and reliable solution for sharing disks between the nodes of the cluster, as it offers high bandwidth, low latency, and error correction. FC can also support zoning and masking for security purposes .
CIFS, or Common Internet File System, is a file-level protocol that allows sharing files and folders over a network. CIFS does not support sharing disks or accessing LUNs at the block level.
FTP, or File Transfer Protocol, is a protocol that allows transferring files between two systems over a network. FTP does not support sharing disks or accessing LUNs at the block level.
NFS, or Network File System, is a file-level protocol that allows sharing files and folders over a network. NFS does not support sharing disks or accessing LUNs at the block level.
RAID 10, or Redundant Array of Independent Disks 10, is a storage configuration that combines mirroring and striping to provide high performance and fault tolerance. RAID 10 is not a protocol that allows sharing disks or accessing LUNs over a network.
