iSCSI

iSCSI (Internet Small Computer System Interface) 

iSCSI is a protocol designed to organize networked data storage, allowing connection to storage over an IP network. It is based on the TCP/IP protocol and is used to send SCSI commands over a network connection, usually Ethernet. 

Key features of iSCSI: 

• A protocol for networked storage: iSCSI allows you to create a storage area network (SAN) by emulating the local connection of storage devices. 
• Cost-effective: iSCSI uses standard network adapters and switches, making it more affordable than Fibre Channel networks. 
• Easy to configure: iSCSI is TCP/IP based, making it easy to configure and manage. 

Components of iSCSI: 

• Initiator: The host that establishes the connection to the storage. 
• Target (Target): The data store that accepts the connection from the initiator. 
• IQN (iSCSI Qualified Name): A unique name used to identify initiators and targets. 

iSCSI Applications: 

• Storage Consolidation: Combining disparate data into a single repository. 
• Disaster Recovery: Backing up data to remote data centers. 
• Virtualization: Used in virtual environments to provide access to storage.