Setting Up the RHEV Virtual Infrastructure - Getting Started with Red Hat Enterprise Virtualization - page 57

Storage domains
RHEV supports multiple storage types, such as FC, iSCSI, NFS, local storage, POSIX
Complaint, and Gluster File System. Note that you can't mix up different storage types in a
data center on RHEV 3.3. In RHEV, there are three different storage domains:
• Data domain : This is used to store the virtual machines' images, snapshots, and
templates
• ISO domain : This is used to store the operating system library for virtual machine
deployment as well as the virtual floppy drive
• Export/Import domain : This is used to back up all your virtual machine images
and use the same disk as an import domain to move your virtual workloads across
the data centers in the same or other RHEV environments
In this guide, we are going to use the storage type of iSCSI for our data storage domains,
and NFS disks for ISO and export/import domains. Please refer to Chapter 10 , Setting Up
iSCSI, NFS, and IdM Directory Services for RHEV , to set up your own NFS and iSCSI
server on RHEL to serve ISO, export storage domain, and data storage domains for your
RHEV infrastructure.