About iSCSI initiator and targets
iSCSI is a way to share storage over a network and works at the block device level.
For iSCSI communication, the following components talk with each other:
■ Initiator
■ Target
The clients which access the iSCSI storage are called initiators. This iSCSI Initiator
can connect to a server (the iSCSI target). In doing so, the iSCSI Initiator sends
SCSI commands to the iSCSI target. These SCSI commands are packaged in IP
packets for this purpose.
An iSCSI target device receives iSCSI commands and shares the storage. The
storage can be a physical disk, or an area representing multiple disks or a portion
of a physical disk. A storage array is a typical iSCSI target.
Supported iSCSI features
See the following pointers to understand how iSCSI is supported with NetBackup
appliances:
■ iSCSI is supported only on configuration H of the 5240 appliance.
■ Configuration H of the NetBackup 5240 appliance always functions as an initiator.
See “NetBackup 5240 Appliance configuration H” on page 13.
■ iSCSI supports VMware backups only. It supports the NetBackup for VMware
feature.
See “About NetBackup for VMware” on page 16.
■ For this release, the iSCSI functionality (commands) are available on the
NetBackup Appliance Shell Menu only.
■ iSCSI supports IPv4 addresses only. iSCSI connections over IPv6 are not
supported.
In addition, the initiator and the target must be on the same Layer 2 network
(L2).
■ iSCSI supports Dynamic Multi-Pathing (DMP). You can connect via multiple
paths to the same target. The backups or restores over iSCSI can continue as
long as one path is available.
■ A VLAN can be configured on either the network interface or the iSCSI interface.
If VLAN is configured on both the network and iSCSI interface, the VLAN for
the network interface is effective on both the interfaces. Note that when VLAN
10Overview
About iSCSI initiator and targets
To Next Page
Loading...
Need help?
General
