Which two conditions may block a PowerStore upgrade?

Before initiating a software upgrade, PowerStore performs a mandatory Pre-Upgrade Health Check (PUHC) to ensure the system's stability. The upgrade process will be blocked if this check fails. The PUHC specifically verifies that there are no active critical or major alerts, as these indicate underlying system faults that must be resolved first. Additionally, the check ensures that no critical background operations, such as drive rebuilds or rebalancing, are in progress. These operations are resource-intensive, and their completion is necessary to guarantee a safe and successful non-disruptive upgrade.

C. Both nodes powered on: This is a requirement for a non-disruptive upgrade to proceed, not a condition that blocks it. The upgrade process updates one node while the other serves I/O.
D. Host multipathing enabled: Properly configured host multipathing is a critical prerequisite for a non-disruptive upgrade. It ensures hosts maintain storage access when a node reboots during the upgrade cycle.

1. Dell PowerStore: Software Upgrade Guide (Version 3.0)

Page 13

Section: "Pre-upgrade activities": This section details the Pre-Upgrade Health Check (PUHC). It states

"The pre-upgrade health check verifies that the cluster is in a good state to start the software upgrade... If the pre-upgrade health check fails

the software upgrade package cannot be uploaded and installed."

Page 14

Table 2: "Pre-upgrade health check": This table lists the items verified by the health check. It includes checks for "Unacknowledged alerts" and "Hardware with faults

" which directly corresponds to active critical system faults (Option A). It also checks for "Jobs in progress

" which includes drive rebuilds (Option B).

2. Dell PowerStore: System Health Checks Guide (Version 3.0)

Page 10

Section: "Running the System Check": This document describes the health check utility. It notes that the check validates the "health and wellness of a PowerStore cluster." The checks performed by this utility are the foundation of the PUHC. It explicitly looks for hardware failures and system alerts that would prevent a stable upgrade. The presence of a drive rebuild operation would be flagged as a background process that needs to complete.