Administrator Guide

Rolling Upgrade Requirements
Before you begin the Fluid Cache VSA Rolling Upgrade process, download the following to an
appropriate directory
• fldc_vsa.exe — Application that enables you to import and export Fluid Cache VSA configuration
during the rolling upgrade process.
• Fluid-Cache-Dell-2.1.0.<build number>.OVA — The OVA file for Fluid Cache for SAN, version 2.1.0.
Rolling Upgrade Prerequisites
Ensure the following before you start performing the rolling upgrade on Fluid Cache clusters:
• Fluid Cache clusters must have at least two nodes up at all times in order to function. Three nodes is
the smallest cluster size that can be created and it is essential that two or more Fluid Cache VSA’s
remain up at all times for I/O to flow. On a cluster with four or more nodes it is possible to shut down
more than one Fluid Cache guest, but it is recommended to wait for one Fluid Cache appliance guest
to shut down completely before moving on to shutting down the next one, and of course, never go
below two completely booted and online Fluid Cache nodes.
• During the rolling upgrade process, no configuration changes should be made to the Fluid Cache
cluster until all the VSA’s are upgraded to v2.1.
• It is not recommended for the cluster to run mixed versions of the VSA other than during the rolling
upgrade process.
• The Primary CFM should be upgraded last. This will prevent situations where slow shutdowns can
occur when there are still Secondary CFMs running the 2.0.10 version. Check the Fluid Cache Web
page to identify the Primary CFM node.
Rolling Upgrade Workflow
The following section describes the workflow for performing Cluster OS Rolling Upgrade.
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