Installing a DE2-24C Disk Shelf

Use the following procedure to install an Oracle Storage Drive Enclosure DE2-24C, which requires four standard mounting rack units (4RU), or twelve rack holes, of vertical space in the cabinet.

Before You Begin

• Review Prerequisites for Installation and Overview of Disk Shelves.

• To prevent the cabinet from tipping, always load the heaviest equipment, which are disk shelves, starting from the bottom of the cabinet.

• To best prepare for cabling disk shelves to controllers, now and in the future, mount controllers in the middle of the cabinet.

• Screws are not provided for installation into a cabinet with M6-sized threaded holes.

1. Extend all anti-tilt and stabilization devices from the bottom of the cabinet.
2. Locate the appropriate rack unit (RU) height, which is eight rack holes, starting from the bottom on the cabinet. If using an unthreaded universal 19-inch or Sun Rack II cabinet, snap one supplied cage nut into the appropriate rack holes.
   
3. Prepare the screws in each rail end:

   • Square-hole unthreaded cabinet - No preparation.

   • Round-hole unthreaded cabinet - Remove the screws from each rail end and discard. Locate the screws for round-hole cabinets and place aside.

   • Threaded cabinet - Remove screws and replace them in the opposite direction (from the inside of the rail flange) so they act as location pins. Also remove the clip nut from each front rail end and discard.

4. Position the front of the rails inside the cabinet, with the rail flange inside of the cabinet flange, and the rail label facing the inside of the cabinet.

   • Square-hole unthreaded cabinet - The screw heads fit inside the rack holes.

   • Round-hole unthreaded cabinet - Install two screws through the rack and into the front of each rail. Do not install into the cage nut in the rack, or the clip nut on the rail.

   • Threaded cabinet - The location pins fit inside the rack holes.

5. Adjust the rail lengths to fit.
   
6. Install one screw through the rack and into the rear of each rail.
7. Tighten the two locking screws in the rails.
   
8. Using a mechanical lift or two people, one at each side of the disk shelf, carefully lift and rest the shelf on the bottom ledge of the left and right rails. Do not lift using the power supply handles.
   
9. Carefully slide the shelf into the cabinet. Ensure that the shelf is fully seated within the rails. If removing the shelf to reseat it, support it at all times.
10. Remove the front side caps, install two screws into each front side, and replace the caps.
11. Install one long patchlock screw per rail to secure the rear of the shelf to the rear of the rack.