Question: Why is my Amazon EBS volume that I created from a fast snapshot restore-activated snapshot slow?

I created an Amazon Elastic Block Store (Amazon EBS) volume from a snapshot that has Amazon EBS fast snapshot restore activated. The Amazon EBS volume performance is slow. How do I resolve this?Short descriptionWhen you create an EBS volume from a fast snapshot restore-activated snapshot, the volume is fully initialized to provide optimal performance. However, sometimes the volume can still perform slowly.To troubleshoot this issue, check the following:The volume is created using fast snapshot restore.Fast snapshot restore is activated on the snapshot, activated before volume creation, and is in the same Availability Zone.There are enough volume creation credits.Also, see Considerations for Amazon EBS fast snapshot restore.

ResolutionNote: If you receive errors when running AWS Command Line Interface (AWS CLI) commands, make sure that you’re using the most recent AWS CLI version.The volume is created using fast snapshot restoreTo confirm that the volume is created using fast snapshot restore, run the following describe-volumes AWS CLI command:# aws ec2 describe-volumes --volume-id volume_id --output tableNote: Replace volume_id with your volume's ID.Example output:            DescribeVolumes                Volumes    AvailabilityZone       ap-southeast-2a    CreateTime             2022-11-17T22:45:42.999000+00:00    Encrypted              False    FastRestore            True    Iops                   100    MultiAttachEnabled     False    Size                   8    SnapshotI              snap-0b0326ebbfd253c95    State                  available    VolumeId               vol-0e51d7f8f003ae2a6    VolumeType             gp2If the FastRestored attribute is set to True, then the volume is created using fast snapshot restore. If FastRestored isn't listed, then the volume isn't created using fast snapshot restore.Fast snapshot restore is activated on the snapshot, activated before volume creation, and is in the same Availability ZoneConfirm that fast snapshot restore is activated on the snapshot. Fast snapshot restore must be activated on the snapshot before you create the volume. Also, fast snapshot restore must be activated in the same Availability Zone as where you're creating the volume.Run the following describe-fast-snapshot-restores command:# aws ec2 describe-fast-snapshot-restores --filters "Name=snapshot-id,Values=snap-xxxxxxxxxxxxx" --output tableNote: Replace snap-xxxxxxxxxxxxx with your snapshot's ID.Example output:            DescribeFastSnapshotRestores                                    FastSnapshotRestores    AvailabilityZone       ap-southeast-2a    EnabledTime            2022-11-17T12:16:06.014000+00:00    EnablingTime           2022-11-17T12:15:29.374000+00:00    OptimizingTime         2022-11-17T12:15:39.831000+00:00    OwnerId                xxxxxxxxxxxx    SnapshotId             snap-0b0326ebbfd253c95    State                  enabled    StateTransitionReason  Client.UserInitiated - Lifecycle state transitionIf fast snapshot restore is activated, then the State is enabled. If the output lists no attributes, then fast snapshot restore isn't activated on the snapshot. Check the AvailabilityZone attribute to confirm that's it's in the same Availability Zone as where you're creating the volume. Finally, note the EnabledTime attribute to determine if fast snapshot restore was activated before you created the volume.Note: When a snapshot is in the "optimizing" state, fast snapshot restore provides some performance benefit during volume restoration. However, fast snapshot restore provides optimal performance only when the snapshot is in the "enabled" state.There are enough volume creation creditsCheck the Amazon CloudWatch FastSnapshotRestoreCreditsBalance metric to confirm that you have enough volume creation credits. For example, to create two volumes from a fast snapshot restore-activated snapshot, you must have at least two volume creation credits. For more information, see Volume creation credits.Contact AWS SupportIf the preceding troubleshooting steps don't resolve your volume's slow performance, then contact AWS Support.