10.4. Storage Domain Limitations

Storage domains provide space for the storage of virtual disks and ISO images as well as the import and export of virtual machines. While many storage domains may be created within a given data center, there are a number of limitations and recommendations that apply to each storage domain.

Table 10.2. Storage Domain Limitations

Item Limitations
Storage Types
Supported storage types are:
  • Fibre Channel Protocol (FCP)
  • Internet Small Computer System Interface (iSCSI)
  • Network File System (NFS)
  • POSIX Compliant File System (POSIX)
  • Red Hat Gluster Storage (GlusterFS)
New ISO and export storage domains in Red Hat Virtualization 4.1 can be provided by any file-based storage (NFS, Posix, or GlusterFS).
Logical Unit Numbers (LUNs) No more than 300 LUNs are permitted for each storage domain that is provided by iSCSI or FCP.
Logical Volumes (LVs)
In Red Hat Virtualization, logical volumes represent virtual disks for virtual machines, templates, and virtual machine snapshots.
Red Hat Virtualization supports 1300 logical volumes per block-based storage domain.


See Storage in the Administration Guide for further information about storage domains.