It may be necessary to remove the server cable arms to move the power cables. If using a screwdriver, then ensure that there are Torx T30 and T25 bits. Allow more time for the replacement if using the hand wrench tool provided with the replacement rack. Use of a cordless drill or power screwdriver lessens the amount of time needed to replace the PDU. However, it is not necessary to remove the side panel to replace the PDU. Removal of the side panel lessens the amount of time needed to replace the PDU. Note how the power cords are coiled in the packaging so the failed unit can be repacked the same way. Trace the power cables running from the PDU that will be replaced to the power source, and only unplug those feeds.ДЄllow time to unpack and repack the PDU replacement parts. Unhooking the wrong power feeds causes the rack to shut down. Do not place excessive tension on the InfiniBand cables by pulling them. Care should be taken when handling the InfiniBand cables, which are normally latched securely. This could cause the rack to be unavailable. Unlatching the InfiniBand cables while removing or inserting PDU-A may cause a loss of service due to nodes being removed from the cluster. Before replacing a PDU, the following guidelines should be reviewed to ensure the procedure is safe and does not disrupt availability:

Stack and rack grids target