Disk settings - AWS Elastic Disaster Recovery
Change staging disk type

Disk settings

The Disk settings tab shows a list of all of the disks on the source server and information for each disk.

Disk settings include:

  • Disk name

  • Staging disk type – The corresponding Amazon EBS volume disk type that is being used for the disk.

  • Replicated storage – The amount of storage that has been replicated from the disk to the Replication Server.

  • Total storage – The total storage capacity of the disk.

  • Status – shows the status of each disk, values can be either Normal, Normal with marketplace license, Error (with error description). Normal with marketplace license means that the server has at least one marketplace license associated with this volume. Volumes with marketplace licenses pose some limitations on launch: the target region and the selected instance type must support this license. If launching into a different account, the marketplace product must be subscribed to in that account as well or the launch will fail. The state is set to Error if there is a problem with the volume, such as not having permissions to read the marketplace license details if the server is owned by a different AWS account. The value can also be empty if the status is not known at this time.

Change staging disk type

You can change the EBS volume disk type for each disk or for a group of disks.

To change the EBS volume disk type, select the circle to the left of each disk name and choose Change staging disk type.

On the Change staging disk type dialog, select the type of EBS volume to use for the disk or group of disks.

Select the AUTO option if you want AWS Elastic Disaster Recovery to automatically select the most cost-effective EBS volume disk type for each disk based on the disk size and type based on the option you defined in the Replication settings (either the default Lower cost, Throughput Optimized HDD (st1) option or the Faster, General Purpose SSD (gp2) or (gp3) s option).

AWS Elastic Disaster Recovery uses a single Replication Server per 15 source disks. Selecting the Auto option will ensure that the least amount of replication servers are used, resulting in increased cost savings.

Note

AWS Elastic Disaster Recovery will always use EBS magnetic volumes for disks that are under 125 GiB in size, no matter which option is selected.

If you do not want AWS Elastic Disaster Recovery to automatically select a disk, you can select a disk manually. Select the disk type from the EBS volume type menu.

For certain disks, you can configure the amount of IOPS to be allocated per GB of disk space under IOPS. You can allocate up to 50 IOPS per GB. 64,000 IOPS are available for Nitro-based instances. Other instances are guaranteed up to 32,000 IOPS. The maximum IOPS per instance is 80,000.

Choose Change to confirm the change.