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SnapScale/RAINcloudOS 4.1 Administrator’s Guide
5 – Storage Options
iSCSI Multi-Initiator Support
Check the
Support Multiple Initiators
box to allow two or more initiators to simultaneously
access a single iSCSI target. Multiple initiator support is designed for use with applications or
environments in which clients coordinate with one another to properly write and store data on
the target disk. Data corruption becomes possible when multiple initiators write to the same
disk in an uncontrolled fashion.
NOTE: RAINcloudOS supports Windows 2003 and Windows 2008 Server failover clustering.
When the box for
Support Multiple Initiators
is checked, a warning message appears:
Uncontrolled simultaneous access of multiple initiators to the same
iSCSI target can result in data corruption. Only enable Multi-
Initiator Support if your environment or application supports it
.
It functions as a reminder that data corruption is possible if this option is used when creating
an iSCSI disk.
Disconnect iSCSI Disk Initiators before Shutting Down the Cluster
Shutting down the cluster while a client initiator is connected to an iSCSI disk appears to the
client initiator software as a disk failure and may result in data loss or corruption. Make sure
any initiators connected to iSCSI disks are disconnected before shutting down the cluster
nodes.
iSCSI Disk Naming Conventions
iSCSI disks are assigned formal iSCSI Qualified Names (IQNs). These are used when
connecting an initiator to an iSCSI target, and differ from the
iSCSI Disk Name
(alias)
assigned when the iSCSI disk is created in the Web Management Interface. The full IQN is
displayed for each iSCSI disk on the
iSCSI Disk Properties
page.
The full IQN is also shown when you mouseover the iSCSI name in the disk table.
