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External Storage

everRun systems support Fibre Channel, iSCSI, and Linux device mapper multipath external storage. everRun software handles external storage in the same way it handles internal storage. It mirrors VM data between external storage logical disks attached to each node as it does for internal storage. This is known as everRun replicated storage.

everRun software has no external storage configuration feature. You must manage the installation and configuration of your particular external storage infrastructure. This may involve installing HBA cards, drivers, and tools required by your external storage system. Follow the instructions provided by your external storage system vendor. In addition you must configure the everRun system to use Linux multipathing in order for the system to support external storage systems (see Configuring Linux Multipathing).

Caution: everRun boot partitions and other everRun system data must reside on internal storage; they are not supported on external storage.
Note: The system administrator must have root access to the everRun host OS on each physical machine in order to install and/or configure external storage.

For Fibre Channel external storage, this typically involves:

  1. Installing and configuring HBAs.
  2. Obtaining information (WWNs, port addresses, etc.) to be used in masking and zoning operations supported by your SAN fabric infrastructure.
  3. Provisioning LUNs on the external storage system.
  4. Managing access to logical disks by configuring SAN zoning and LUN masking.

For iSCSI external storage, this typically involves:

  1. Configuring your iSCSI initiators.
  2. Provisioning LUNs on the external storage system.
  3. Managing access to logical disks by configuring LUN masking.

After installing and configuring your external storage infrastructure you must configure the everRunsystem host OS to recognize and use the external storage. See Adding or Removing External Storage LUNs for more information.

Related Topics

Managing External Storage