Exporting imported tape data sets

To export imported tape data sets

1. Select the Export option from the three dot menu: 

   

   Since tapes work differently than DASD, data sets that were originally allocated on tapes can have attributes that are not always applicable for DASD allocation.
   Also, data sets on tape do not have the associated space attributes required for DASD allocation, meaning that the allocation parameters that would be used are the ones that you specify during the Export action. 

2. Specify the following parameters: 

   Parameters	Description
   Data Set Name	The name of the data set to be allocated in z/OS By default, the UI displays the imported tape data set name. This field is mandatory.
   Target Data Set Name	The name of the data set to be allocated in z/OS By default, the UI displays the imported tape data set name. This field is mandatory.
   Export Volume Name	The name of the VOLSER on which the data set is to be allocated in z/OS Specifying this parameter means the data set will be allocated on a single volume (The Volume Count parameter of the allocation parameters will be ignored). For SMS-managed data sets, the target VOLSER will be determined by the ACS routines.
   Export to z/OS in format DATA SET	Creates a z/OS data set
   Export to z/OS in format AWS TAPE	Creates a z/OS data set, containing the exported tape data in an AWS virtual tape format that can be read by distributed platforms AWS TAPE format is suitable for data sets with a block size not applicable for DASD allocation.

   

   By default, the exported data set is allocated in a DATA SET in z/OS format, on DASD, with size as automatically calculated based on the imported tape data set size. The UI provides additional parameters to set the allocation parameters and overwrite SMS parameters.

3. When choosing the parameters, consider the following: 

   Property	Description
   Size	Many tape data sets are very large in size and may require allocation as large, extended or multi volume data sets on DASD. When exporting a large data set: For SMS-managed data sets, leave the Export Volume Name parameter empty, the ACS routines will determine the storage group. Use the Allocation parameters to set the allocation attributes. If you’d like to overwrite the ACS routines, use the “SMS parameters” section. Non-SMS managed data sets can be allocated on a single volume only, use the ”Allocation parameters” to change additional attributes.
   Original block size	Cloud storage can accommodate any block size, however, tape data sets can have a block size larger than 32760, that is not eligible for DASD allocation. In this case, allocate the exported data set using one of the following options: AWSTAPE format. DATASET format on a TAPE unit - choose DATA SET and specify tape attributes for the Export Volume Name and the Allocation parameters.

   

4. Use the Allocation parameters tab to provide the allocation attributes of the exported data set: 

   Field	Description
   Unit	Any applicable z/OS value The default is 3390.
   Space in CYLs	By default, the UI will display an estimated size, as automatically calculated based on the imported tape data set size.
   DSNTYPE	The default is NONE.
   Volume Count	This parameter is relevant for SMS-managed data sets only and is ignored if specifying a value in Export Volume Name. The default is 5.

5. Use the Advanced SMS parameters tab to set the SMS attributes of the exported data set: 

   Field	Description
   Storage class	Specifies the storage class to be assigned
   Management class	Specifies the management class to be assigned
   Data class	Specifies the data class to be assigned

6. Click Export to export the data set.