8464ch02_Architecture.fm Draft Document for Review February 7, 2020 3:15 pm 2.4.30 Secure Data Erase  2.4.31 Copy Export No difference exists with stand-alone cluster.  In general, the Copy Export feature has the same functions as a stand-alone cluster.  However, consider the following points:  GLYPH<SM590000> The Copy Export function is supported on all configurations of the TS7700T, including grid  configurations. In a grid configuration, each TS7700T is considered a separate source  TS7700T.  GLYPH<SM590000> Recovery that is run by the client is to a stand-alone cluster configuration only. After  recovery, the Grid MES offering can be applied to re-create a grid configuration. GLYPH<SM590000> When a Copy Export operation is started, only the following logical volumes are  considered for export: – They are assigned to the secondary pool that is specified in the Export List File  Volume. – They are also on a physical volume of the pool or in the cache of the TS7700 running  the export operation.  GLYPH<SM590000> A service from IBM is available to merge a Copy Export set in a grid. For more information,  contact your IBM SSR.  Only the physical volumes that are exported from a source TS7700T can be used for the  recovery of a source TS7700T. Physical volumes from more than one source TS7700T in  a grid configuration cannot be combined for recovery use. Important:  Ensure that scheduled Copy Export operations are always run from the  same cluster for the same recovery set. Other clusters in the grid can also start  independent copy export operations if their exported tapes are kept independent and  used for an independent restore. Exports from two different clusters in the same grid  cannot be merged later. For a Grid configuration, if a logical volume is to be copied to the TS7700 that runs the  Copy Export operation, but that copy has not yet completed when the export is started, it is  not included in the current export operation. Ensure that all logical volumes that must be  included completed replication to the cluster where the export process is run. No difference exists with a stand-alone cluster.  AOTM is an optional function by which after an unexpected TS7700 Cluster failure, one of the  methods for ownership takeover is automatically enabled without operator intervention.  Enabling AOTM improves data availability levels within the composite library. AOTM uses the TS3000 TSSC that is associated with each TS7700 in a grid to provide an  alternative path to check the status of a peer TS7700. Therefore, every TS7700 in a grid must  be connected to a TSSC.  2.4.32 Encryption of physical tapes 2.4.33 Autonomic Ownership Takeover Manager 92  IBM TS7700 Release 5.0 Guide