Before using the Remote Storage feature, review the following requirements and restrictions.

Supported protocols

The following protocols are supported:

  • iSCSI

  • IPv4

For up-to-date DE Series support and configuration information, see the Lenovo Storage Interoperation Center (LSIC).

Hardware requirements

The DE Series storage system must include:

  • Two controllers (duplex mode)

  • iSCSI connections for both DE Series controllers to communicate with the remote storage system through one or more iSCSI connections

  • ThinkSystem SAN OS 11.71 or greater

  • Remote Storage feature enabled in the Submodel ID (SMID)

The remote system can be either an DE Series storage system or a system from another vendor. It must include:

  • iSCSI-capable interfaces


The Remote Storage feature has the following restrictions:

  • Mirroring must be disabled.

  • Destination volume on the DE Series system must not have snapshots.

  • Destination volume on the DE Series system must not be mapped to any hosts before the import is started.

  • Destination volume on the DE Series system must have resource-provisioning disabled.

  • Direct mappings of the remote storage volume to a host or multiple hosts is not supported.

  • Web Services Proxy is not supported.

  • iSCSI CHAP secrets are not supported.

  • SMcli is not supported.

  • VMware Datastore is not supported.

  • Only one storage system in the relationship/import pair can be upgraded at a time when there is an import pair present.