Installing disk shelves with IOM12 modules for a new system installation

You install the disk shelves in a rack using the rack mount kits that came with the disk shelves.

1. Install the rack mount kit (for two-post or four-post rack installations) that came with your disk shelf using the installation flyer that came with the kit.
   Attention

   If you are installing multiple disk shelves, you should install them from the bottom to the top of the rack for the best stability.

   Do not flange-mount the disk shelf into a telco-type rack; the disk shelf's weight can cause it to collapse in the rack under its own weight.

2. Install and secure the disk shelf onto the support brackets and rack using the installation flyer that came with the kit.

   When installing DM600S disk shelves, remove the power supplies and I/O modules (IOMs) to make the disk shelf lighter and easier to maneuver.

3. If you are installing a DM600S disk shelf, install the components into the racked disk shelf; otherwise, go to the next step.
   If you purchased a partially populated disk shelf which does not have a drive in every drive slot, you must ensure that:

   • The first four slots (0, 3, 6, and 9) are occupied in each drawer.

     This ensures proper airflow in the disk shelf.

   • In a shelf with 30 drives, the remaining ten drives are distributed evenly throughout the shelf in slots 1 and 10 of each drawer.

   The following illustration shows how the drives are numbered from 0 to 11 in each drive drawer within the shelf. In a shelf containing 30 drives, slots 0, 1, 3, 6, 9, and 10 must contain drives.

   
   
   
   1. Reinstall any power supplies and IOMs you removed prior to installing your disk shelf into the rack.
   2. Open the top drawer of the shelf.
   3. Raise the cam handle on the drive to vertical.
   4. Align the two raised buttons on each side of the drive carrier with the matching gap in the drive channel on the drive drawer.
      

      1	Raised button on the right side of the drive carrier

   5. Lower the drive straight down, and then rotate the cam handle down until the drive snaps into place under the orange release latch.
   6. Repeat the previous substeps for each drive in the drawer.
      You must be sure that slots 0, 3, 6, and 9 in each drawer contain drives.
   7. Carefully push the drive drawer back into the enclosure.

      Attention Possible loss of data access – Never slam the drawer shut. Push the drawer in slowly to avoid jarring the drawer and causing damage to the storage array.

   8. Close the drive drawer by pushing both levers towards the center.
   9. Repeat these steps for each drawer in the disk shelf.
4. If you are adding multiple disk shelves, repeat this procedure for each disk shelf you are installing.
   Note

   Do not power on the disk shelves at this time.