What is an iSCSI Appliance?
An iSCSI Appliance has disk storage attached. This disk can be SATA, SAS, FC or SCSI based. The iSCSI Appliance also has multiple Gigabit cards for sustaining the transfer rates that are required by the servers on the network. The Appliance also offers a high degree of redundancy against component failure and typically single or dual processors. The disk that is connected to the iSCSI Appliance is then served up across your network using IQN names, this creates a handshake between the iSCSI Appliance and the server or workstation which is being provided with disk storage. In addition to this Snapshots can be taken for the disk being offered up along with mirroring and high availability.