Owner's Guide Security and Maintenance of Recovery Appliance Maintaining the Recovery Appliance Hardware Maintaining the Flash Disks of Storage Servers Maintaining the Flash Disks of Storage Servers This section describes how to perform maintenance on flash disks. It contains the following topics: About the Flash Disks Faulty Status Indicators Identifying Flash Disks in Poor Health Identifying Underperforming Flash Disks When Is It Safe to Replace a Faulty Flash Disk? Replacing a Failed Flash Disk Replacing a Faulty Flash Disk Removing an Underperforming Flash Disk About Write-Back Flash Cache