An administrator needs to create a backup of a Portworx volume in an AWS S3 bucket and has already configured the secrets so Portworx can connect to…

The pxctl cloudsnap backup command is used to initiate a backup of a Portworx volume to a pre-configured cloud location, such as an AWS S3 bucket. Since the administrator has already configured the necessary secrets (credentials), they would reference these credentials using the -cred-id flag followed by the credential's unique identifier when running the backup command. This action creates a "cloudsnap," which is Portworx's term for a backup stored in a cloud object store.

B. pxctl credentials create ... is used to configure and store the cloud provider credentials. The question states this step has already been completed.

C. pxctl volume snapshot create ... creates a local, point-in-time snapshot of a volume within the Portworx cluster, not a backup to an external cloud location like S3.

1. Portworx Enterprise Documentation

"Back up volumes to the cloud": This document explicitly details the procedure for creating a cloud backup. It states

"To back up a volume to the cloud

you must run the pxctl cloudsnap backup command." It also shows the syntax including the credential ID flag.

Source: Portworx by Pure Storage Official Documentation

Backup and Restore -> Cloudsnaps -> Back up volumes to the cloud.

2. Portworx Enterprise Documentation

"pxctl reference - pxctl cloudsnap": The command reference for pxctl cloudsnap lists backup as the subcommand for creating a cloud backup. The description for the backup command confirms its use for backing up volumes to the cloud.

Source: Portworx by Pure Storage Official Documentation

Reference -> pxctl reference -> pxctl cloudsnap.

3. Portworx Enterprise Documentation

"pxctl reference - pxctl credentials": This reference page describes the pxctl credentials command

showing that create is used to "Create cloud credentials." This confirms that option B is for a prerequisite step

not the backup itself.

Source: Portworx by Pure Storage Official Documentation

Reference -> pxctl reference -> pxctl credentials.