Auto-scaling storage

Information about enabling and managing auto-scaling for Db2® SaaS storage.

When you enable auto-scaling, the storage on your Db2 SaaS instance will automatically be scaled up if your storage use exceeds the threshold you specify. For example, you can choose to scale up if more than 90% of your storage is in use for a period of 15 minutes.

General Auto-scaling Parameters

  • When to scale, based on usage over time.
  • A hard limit on scaling, your deployment stops auto-scaling at the limit.

Auto-scaling UI

Azure Auto-scale UI

Figure 1. Azure Auto-scale UI

Auto-scaling Considerations

  • Storage cannot be scaled down.
  • Each increment is 10% of your storage size. The minimum increase is 20GB.
  • Storage can be auto-scaled up to a limit of 262,110 GB (approximately 256 TB).
  • If you rarely increase storage on your deployment, you might want to manually scale your deployment rather than enabling the auto-scaling feature.
  • Scaling is an online operation.
  • Some scaling operations can be more long running than others. Significantly increasing the storage size can take longer than increasing it by a small amount because additional underlying hardware resources must be provisioned.
  • IOPS and throughput value will be maintained during auto scale.

Configuring Auto-scaling in the UI

The Auto-scaling panel is on the Administration tab of your deployment's console page.

To enable Auto-scaling

  1. Click Edit
  2. Check Enable storage auto-scaling
  3. Enter your desired parameter values.
  4. Be sure to click Save for your configuration to be saved and your changes to take effect.
Azure Autoscale 1

Figure 2. Azure Auto-scale Edit

Azure Autoscale 2

Figure 3. Azure Enable Auto-scale

To disable auto-scaling

  1. Click Edit
  2. Uncheck Enable storage auto-scaling.
  3. Click Save Changes to save the configuration.