Schedule snapshot images

You create a snapshot schedule to enable recovery in case of a problem with the base volume and to perform scheduled backups. Snapshots of base volumes or snapshot consistency groups can be created on a daily, weekly, or monthly schedule, at any time of day.

Before you begin

The base volume must be Optimal.

About this task

This task describes how to create a snapshot schedule for an existing snapshot consistency group or base volume.

Note: You also can create a snapshot schedule at the same time you create a snapshot image of a base volume or snapshot consistency group.

Procedure

  1. Do one of the following actions to create a snapshot schedule:
    • Select Storage > Volumes.

      Select the object (volume or snapshot consistency group) for this snapshot schedule, and then select Copy Services > Create snapshot schedule.

    • Select Storage > Snapshots.

      Select the Schedules tab, and then click Create.

  2. Select the object (volume or snapshot consistency group) for this snapshot schedule, and then click Next.

    The Create Snapshot Schedule dialog box appears.

  3. Do one of the following actions:
    • Use a previously defined schedule from another snapshot object.

      Make sure advanced options are displayed. Click Show more options. Click Import Schedule, select the object with the schedule you want to import, and then click Import.

    • Modify the basic or advanced options.

      In the upper right of the dialog box, click Show more options to display all options, and then refer to the following table.

  4. Do one of the following actions:
    • If the object is a snapshot consistency group, click Create to accept the settings and create the schedule.
    • If the object is a volume, click Next to allocate reserved capacity for the snapshot images.

      The volume candidate table displays only the candidates that support the reserved capacity specified. Reserved capacity is the physical allocated capacity that is used for any copy service operation and storage object. It is not directly readable by the host.

  5. Use the spinner box to allocate the reserved capacity for the snapshot images. Do one of the following actions:
    • Accept the default settings.

      Use this recommended option to allocate the reserved capacity for the snapshot images with the default settings.

    • Allocate your own reserved capacity settings to meet your data storage needs.

      If you change the default reserved capacity setting, click Refresh Candidates to refresh the candidate list for the reserved capacity you specified.

      Allocate the reserved capacity using the following guidelines:

      • The default setting for reserved capacity is 40% of the capacity of the base volume. Usually this capacity is sufficient.
      • The capacity needed varies, depending on the frequency and size of I/O writes to the volumes and the quantity and duration of snapshot image collection.
  6. Click Next.
    The Edit Settings dialog box appears.
  7. Edit the settings for the snapshot schedule as needed, and then click Finish.