Preparing to add a drive traySteps for preparing to add a new drive shelf (drive tray) while power is still applied to the othercomponents of a storage array.Before you beginMake sure that the power source for your storage array can accommodate the power requirements ofthe new drive shelf (drive tray). Refer to the power specification for your drive shelf in theStorageSystems Site Preparation Guide. Make sure that the cabling pattern for the existing storage arraymatches one of the applicable schemes shown in this guide.Steps1. Select Monitor > Health > View Health (Recovery Guru) from the Array ManagementWindow (AMW).2. Select Monitor > Health > Collect Support Data from the AMW, complete the dialog box, andselect Start.Support data is saved to the file that you specify in the dialog box. The data is not automaticallysent to technical support.3. From the AMW navigation bar, select Monitor > Reports > EventLog .4. In the Event Log window, select View Only Critical Events.5. Review the system critical events for events that have occurred in the last two to three weeks, andverify that any recent critical events have been resolved or otherwise addressed.Note: If unresolved critical events have occurred within the previous two to three weeks, stopthe shelf hot-add procedure and contact technical support. Continue this procedure only whenthe issue is resolved.6. Select the Hardware tab in the AMW.7. For each drive tray in the storage array, select the View Tray Components link.8. Select ESM Canisters from the Overall Component Information pane.9. Confirm that the number of ESMs/IOMs detected matches the number of ESMs/IOMs installed inthe system and that for each drive shelf, both of the ESMs/IOMs show that communication is OK.Installing the drive tray and applying powerSteps for adding a new drive shelf (drive tray) while power is still applied to the other components ofa storage array.Steps1. Determine which of the following options applies, and then perform the described action.Drive shelf or drive tray cabling | 125