# NVMe Abort command for Amazon EBS volumes
<a name="abort-command"></a>

The `Abort` command is an NVMe admin command that is issued to end a specific command that was previously submitted to the controller. This command is typically issued by the device driver to storage devices that have exceeded the I/O operation timeout threshold. 

Amazon EC2 instance types that support the `Abort` command by default will end a specific command that was previously submitted to the controller when an `Abort` command is issued to attached Amazon EBS volumes. Amazon EC2 instances that do not support the `Abort` command take no action when an `Abort` command is issued to attached Amazon EBS volumes.

The `Abort` command is supported with:
+ Amazon EBS devices with NVMe device version 1.4 or higher.
+ All Amazon EC2 instances, **except** Xen-based instances types and the following Nitro-based instance types:
  + General purpose: A1 \$1 M5 \$1 M5a \$1 M5ad \$1 M5d \$1 M5dn \$1 M5n \$1 M5zn \$1 M6g \$1 M6gd \$1 Mac1 \$1 Mac2 \$1 T3 \$1 T3a \$1 T4g
  + Compute optimized: C5 \$1 c5a \$1 C5ad \$1 C5d \$1 C5n \$1 C6g \$1 C6gd
  + Memory optimized: R5 \$1 R5a \$1 R5ad \$1 R5d \$1 R5dn \$1 R5n \$1 R6g \$1 R6gd \$1 U-12tb1 \$1 U-18tb1 \$1 U-24tb1 \$1 U-3tb1 \$1 U-6tb1 \$1 U-9tb1 \$1 X2gd \$1 X2iezn \$1 Z1d
  + Storage optimized: D3 \$1 D3en \$1 I3en
  + Accelerated computing: DL1 \$1 G4ad \$1 G4dn \$1 G5 \$1 G5g \$1 Inf1 \$1 P3dn \$1 P4d \$1 P4de \$1 VT1

For more information, see section **5.1 Abort command** of the [ NVM Express Base Specification](https://nvmexpress.org/wp-content/uploads/NVM-Express-1_4-2019.06.10-Ratified.pdf).