What is the correct sequence of steps to power up an XtremlO X1 cluster after...

The correct sequence of steps to power up an XtremIO X1 cluster after an emergency shutdown is as follows:

Determine the cause of the shutdown

Power up the Battery Backup Units

Power up the XMS

Power up the Storage Controllers

Start the cluster

Detailed Explanation with References:

Determine the cause of the shutdown: Before powering up the system, it is essential to understand why the emergency shutdown occurred to prevent reoccurrence.

Power up the Battery Backup Units: The BBUs provide the necessary power to the storage controllers during power-up.

Power up the XMS: The XtremIO Management Server must be powered up to manage and monitor the storage system.

Power up the Storage Controllers: Once the BBUs and XMS are operational, power up the storage controllers.

Start the cluster: Finally, start the cluster to bring the XtremIO system back online and resume normal operations.