Overview
This chapter includes the following topics:
■ About iSCSI
■ About iSCSI initiator and targets
■ Supported iSCSI features
■ Overview of the iSCSI topology
■ About the iSCSI Qualified Name (IQN)
About iSCSI
iSCSI is a way of connecting storage devices over a network by using TCP/IP.
iSCSI was developed to enable transmission of SCSI commands over the existing
Internet Protocol (IP) network by using the TCP/IP protocol. iSCSI offers the
possibility of delivering both messaging traffic and block-based storage over IP
networks without installing a separate Fibre Channel network. With release 3.0,
iSCSI supports VMware backups on configuration H of the NetBackup 5240
appliance.
The protocol allows clients (called initiators) to send SCSI commands to SCSI
storage devices (targets) on remote servers. Configuration H of the NetBackup
5240 appliance functions as an initiator.
A target is a storage resource located on an iSCSI server (more generally, one of
the potentially many instances of iSCSI storage nodes running on that server). To
communicate with each other, iSCSI initiators and targets establish iSCSI sessions
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