# 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 \| M5 \| M5a \| M5ad \| M5d \| M5dn \| M5n \| M5zn \| M6g \| M6gd \| Mac1 \| Mac2 \| T3 \| T3a \| T4g
  + Compute optimized: C5 \| c5a \| C5ad \| C5d \| C5n \| C6g \| C6gd
  + Memory optimized: R5 \| R5a \| R5ad \| R5d \| R5dn \| R5n \| R6g \| R6gd \| U-12tb1 \| U-18tb1 \| U-24tb1 \| U-3tb1 \| U-6tb1 \| U-9tb1 \| X2gd \| X2iezn \| Z1d
  + Storage optimized: D3 \| D3en \| I3en
  + Accelerated computing: DL1 \| G4ad \| G4dn \| G5 \| G5g \| Inf1 \| P3dn \| P4d \| P4de \| 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).