# Feature History for RKM

Table 1-15 lists the release history for this feature.

Table 1-19 Feature History for RKM

Feature Name | Releases | Feature Information
Software change | OL-25317-01 | In Release OL-25317-01, Fabric Manager is changed to DCNM for SAN (DCNM-SAN).
4.1(1c) | In Release 4.1(1b) and later, the MDS SAN-OS software is changed to MDS NX-OS software. The earlier releases are unchanged and all references are retained.
RKM migration procedure | 4.1(1c) | Procedure to migrate from Cisco KMC to RKM is explained.

The SME solution provides seamless encryption service through a hardware-based encryption engine. When the MSM-18/4 module or the Cisco MDS 9222i fabric switch is not available, you can use the Offline Data Restore Tool (ODRT).

Note The offline data recovery in SME is only applicable for SME Tape.

This section describes the basic functionalities and operations of this software application and covers the following sections:

• Information About Offline Data Restore Tool

• ODRT Requirements