The recommended practice for managing the lifecycle of snapshots in Portworx is to configure retention policies. Portworx provides native tools, such as the pxctl command-line interface, to create automated snapshot schedules. These schedules can include a retention policy using the --retain flag, which specifies the number of snapshots to keep. When a new snapshot is created beyond this limit, the oldest one is automatically deleted. This policy-driven approach ensures efficient storage utilization, prevents uncontrolled data growth, and eliminates the need for manual, error-prone cleanup tasks, making it the most scalable and reliable method.

A. Manually deleting old snapshots is not a recommended practice because it is inefficient, not scalable, and susceptible to human error, especially in large-scale environments.

C. Retaining all snapshots indefinitely is impractical and unsustainable. It leads to excessive storage consumption, increased costs, and complex management overhead.

1. Portworx Enterprise Documentation

"Create and use local snapshots

" section "Schedule snapshots." This section details the pxctl volume snapshot schedule create command

which includes the --retain flag. The documentation states

"--retain specifies how many snapshots to retain. Once the schedule creates the specified number of snapshots

it deletes the oldest snapshot before creating a new one." This directly supports the use of retention policies for lifecycle management.

2. Portworx Enterprise Documentation

"pxctl reference

" section "pxctl volume snapshot schedule create." The command reference explicitly defines the --retain option as the mechanism to "Specify number of snapshots to retain." This confirms that retention is a built-in

configurable feature intended for managing the number of snapshots.