Understanding ztC Edge LED States

Status LEDs are located on the front panel of each ztC Edge node. The following tables summarize the LED states and meanings.

SYS LED (All ztC Edge Nodes)

The SYS LED reports the overall status of a ztC Edge node, indicating whether the node is healthy or unhealthy. Although the color of the SYS LED varies by ztC Edge model, the SYS LED states and meanings are identical for each model.

Note: The SYS LED state is only a summary of system health. For more detailed system status, alerts, and especially information about the health of virtual machines running on the system, it is also important to monitor the system in the ztC Edge Console.

Some of the states and activities reported in the ztC Edge Console are summarized in online Help topics including Physical Machine States and Activities and Virtual Machine States and Activities.

LED State Meaning Duration

Off

 Node is unhealthy, unless powered off or just powered on Constant
On Node is unhealthy, unless just starting to boot or upgrading software Constant
Flashing (1 second) Normal/healthy operation: capable of managing VMs Continues flashing as long as the system is healthy. There is a 5 minute grace period of flashing for system management restarts and other recovery. If system management cannot recover after 5 minutes, it sets the LED to Off (unhealthy).

Flashing (500ms)

Identifying node: clicking Identify on the Physical Machines page of the ztC Edge Console identifies a physical node for special attention

 Continues flashing for 1 minute, then reverts to previous state

PWR LED (ztC Edge 1xxi Nodes) or Power Button (ztC Edge 2xxi Nodes)

The PWR LED or illuminated power button on a ztC Edge node reports the power state of the node.

LED State Meaning Duration

Off

 Powered off Constant
On Powered on Constant

HDD or SSD LED (ztC Edge 1xxi Nodes Only)

The HDD or SSD LED reports the hard disk activity of a ztC Edge node.

LED State Meaning Duration

Off

 No activity, or node is powered off Constant
Flashing Disk reads/writes are in progress Varies based on level of activity