Draft Document for Review February 7, 2020 3:15 pm 8464ch09_Oper.fm To add an MC, complete the following steps: 1. Select  Add  from the Management Class menu that is shown in Figure 9-66 on page 455  and click  Go .  2. Complete the fields for information that will be displayed in the MCs table. Up to 256 MCs  can be created per TS7700 grid. Remember:  If the cluster does not possess a physical library, the Secondary Pool field  is not available in the Add option. You can use the Copy Action option to copy any MC to each cluster in the TS7700 Grid.  The following options are available in the MC: GLYPH<SM590000> No Copy: No volume duplication occurs if this action is selected.  GLYPH<SM590000> RUN: Volume duplication occurs when the  Rewind Unload  command is received. The  command returns only after the volume duplication completes successfully.  GLYPH<SM590000> Deferred: Volume duplication occurs later based on the internal schedule of the copy  engine. GLYPH<SM590000> Synchronous Copy: Volume duplication is treated as host I/O and occurs before control is  returned to the application that is issuing the I/O. Only two clusters in the grid can have the  Synchronous mode copy defined. GLYPH<SM590000> Time Delayed: Volume duplication occurs only after the delay time that is specified by the  user elapses. This option is available only if all clusters in the grid are running R3.1 or  higher level of code. Selecting  Time Delayed Mode  for any cluster opens another option  menu that includes the following options:  – Delay Queueing Copy for [X] Hours: Number  of hours that queuing the copies are if  Time Delayed Mode Copy is selected. Can be set for 1 - 65,535 hours. – Start Delay After: GLYPH<129> Volume Create: Delay time is clocked from the volume creation. GLYPH<129> Volume Last Accessed: Delay time is cl ocked from the last access. Whenever a  volume is accessed, elapsed time is zeroed for that volume and countdown starts  again from the delay value set by user.  1. Select the check box from the Select column that appears in the same row as the name of  the MC to modify.  2. Select  Modify  from the menu and click  Go .  To modify an MC, complete the following steps: The user can modify only one MC at a time.  Any of the fields that are listed in the MCs’ table can be changed by the user  except  the  MC name. Chapter 9. Configuring and operating the IBM TS7700  457