# Creating a custom shadow copy schedule
<a name="shadow-schedules"></a>

Shadow copy schedules use scheduled task triggers in Microsoft Windows to specify when shadow copies are automatically taken. A shadow copy schedule can have multiple triggers, providing you with a lot of scheduling flexibility. Only one shadow copy schedule can exist at a time. Before you can create a shadow copy schedule, you must first set the amount of [shadow copy storage](shadow-copy-storage.md).

When you run the `Set-FsxShadowCopySchedule` command on a file system, you overwrite any existing shadow copy schedule. If your client computer is in the UTC time zone, you can also specify the time zone for a trigger using Windows time zones and the `-TimezoneId` option. For a list of Windows time zones, see Microsoft's [Default Timezone](https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/default-time-zones) documentation or run the following at a Windows command prompt: `tzutil /l`. To learn more about Windows task triggers, see [Task Triggers](https://docs.microsoft.com/en-us/windows/win32/taskschd/task-triggers) in Microsoft Windows Developer Center documentation. 

You can also use the `-Default` option to quickly set up a default shadow copy schedule. To learn more, see [Configuring shadow copies to use the default storage and schedule](setting-up-fsx-shadow-copies.md). 

**To create a custom shadow copy schedule**

1. Create a set of Windows scheduled task triggers to define when shadow copies are taken in the shadow copy schedule. Use the `new-scheduledTaskTrigger` command in a PowerShell on your local machine to set multiple triggers. 

   This following example creates a custom shadow copy schedule that takes shadow copies every Monday–Friday, at 6:00 AM and at 6:00 PM UTC. By default, times are in UTC, unless you specify a time zone in the Windows scheduled task triggers you create. 

   ```
   PS C:\Users\delegateadmin> $trigger1 = new-scheduledTaskTrigger -weekly -DaysOfWeek Monday,Tuesday,Wednesday,Thursday,Friday -at 06:00
   PS C:\Users\delegateadmin> $trigger2 = new-scheduledTaskTrigger -weekly -DaysOfWeek Monday,Tuesday,Wednesday,Thursday,Friday -at 18:00
   ```

1.  Use `invoke-command` to run the `scriptblock` command. Doing so writes a script that sets the shadow copy schedule with the `new-scheduledTaskTrigger` value that you just created. Replace *`FSxFileSystem-Remote-PowerShell-Endpoint`* with the Windows Remote PowerShell endpoint of file system that you want to administer. You can find the Windows Remote PowerShell endpoint in the Amazon FSx console, in the **Network & Security** section of the file system details screen, or in the response of the `DescribeFileSystem` API operation.

   ```
   PS C:\Users\delegateadmin> invoke-command -ComputerName FSxFileSystem-Remote-PowerShell-Endpoint -ConfigurationName FSxRemoteAdmin -scriptblock {
   ```

1.  Enter the following line at the `>>` prompt to set your shadow copy schedule using the `set-fsxshadowcopyschedule` command.

   ```
   >> set-fsxshadowcopyschedule -scheduledtasktriggers $Using:trigger1,$Using:trigger2 -Confirm:$false }
   ```

    The response displays the shadow copy schedule that you configured on the file system. 

   ```
   FSx Shadow Copy Schedule
        
   
   Start Time:    : 2019-07-16T06:00:00+00:00
   Days of Week   : Monday,Tuesday,Wednesday,Thursday,Friday
   WeeksInterval  : 1
   PSComputerName : fs-0123456789abcdef1
   RunspaceId     : 12345678-90ab-cdef-1234-567890abcde1
   
   Start Time:    : 2019-07-16T18:00:00+00:00
   Days of Week   : Monday,Tuesday,Wednesday,Thursday,Friday
   WeeksInterval  : 1
   PSComputerName : fs-0123456789abcdef1
   RunspaceId     : 12345678-90ab-cdef-1234-567890abcdef
   ```