Lab6 : Create an Amazon EBS volume

You can create an Amazon EBS volume and then attach it to any EC2 instance in the same Availability Zone. If you create an encrypted EBS volume, you can only attach it to supported instance types. For more information, see Supported instance types.

If you are creating a volume for a high-performance storage scenario, you should make sure to use a Provisioned IOPS SSD volume (io1 or io2) and attach it to an instance with enough bandwidth to support your application, such as an EBS-optimized instance. The same advice holds for Throughput Optimized HDD (st1) and Cold HDD (sc1) volumes.

Empty EBS volumes receive their maximum performance the moment that they are available and do not require initialization (formerly known as pre-warming). However, storage blocks on volumes that were created from snapshots must be initialized (pulled down from Amazon S3 and written to the volume) before you can access the block. This preliminary action takes time and can cause a significant increase in the latency of an I/O operation the first time each block is accessed. Volume performance is achieved after all blocks have been downloaded and written to the volume. For most applications, amortizing this cost over the lifetime of the volume is acceptable. To avoid this initial performance hit in a production environment, you can force immediate initialization of the entire volume or enable fast snapshot restore. For more information, see Initialize Amazon EBS volumes.

Create an empty volume

You can create an empty EBS volume using one of the following methods.

Create a volume from a snapshot

Volumes created from snapshots load lazily in the background. This means that there is no need to wait for all of the data to transfer from Amazon S3 to your EBS volume before the instance can start accessing an attached volume and all its data. If your instance accesses data that hasn’t yet been loaded, the volume immediately downloads the requested data from Amazon S3, and then continues loading the rest of the volume data in the background. Volume performance is achieved after all blocks are downloaded and written to the volume. To avoid the initial performance hit in a production environment, see Initialize Amazon EBS volumes.

New EBS volumes that are created from encrypted snapshots are automatically encrypted. You can also encrypt a volume on-the-fly while restoring it from an unencrypted snapshot. Encrypted volumes can only be attached to instance types that support EBS encryption. For more information, see Supported instance types.

You can create a volume from a snapshot using one of the following methods.

To create an EBS volume from a snapshot using the console

1. Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/.
2. In the navigation pane, choose Volumes.
3. Choose Create volume.
4. For Volume type, choose the type of volume to create. For more information, see Amazon EBS volume types.General Purpose SSD gp3 is the default selection.
5. For Size, enter the size of the volume, in GiB. For more information, see Constraints on the size and configuration of an EBS volume.
6. (io1, io2, and gp3 only) For IOPS, enter the maximum number of input/output operations per second (IOPS) that the volume should provide.
7. (gp3 only) For Throughput, enter the throughput that the volume should provide, in MiB/s.
8. For Availability Zone, choose the Availability Zone in which to create the volume. A volume can be attached only to instances that are in the same Availability Zone.
9. For Snapshot ID, select the snapshot from which to create the volume.
10. Set the encryption status for the volume.If the selected snapshot is encrypted, or if your account is enabled for encryption by default, then encryption is automatically enabled and you can’t disable it. You can choose the KMS key to use to encrypt the volume.If the selected snapshot is unencrypted and your account is not enabled for encryption by default, encryption is optional. To encrypt the volume, for Encryption, choose Encrypt this volume and then select the KMS key to use to encrypt the volume.

    Note

    Encrypted volumes can be attached only to instances that support Amazon EBS encryption. For more information, see Amazon EBS encryption.

11. (Optional) To assign custom tags to the volume, in the Tags section, choose Add tag, and then enter a tag key and value pair. .
12. Choose Create Volume.

    Note

    The volume is ready for use when the Volume state is available.