The SPS (Standby Power Supply - battery backup):  Model #          Part #              Description AX4-5SPS      078-000-062     1000W SPS qty 1  Additional source of information for AX4  [URL]  Also, go to the CLARiiON on-line forum and then click on the AX4 Series selection on the left side for more information on the AX4 topics  CLARiiON  If your AX4 has two SPS, then you can replace on-line - it's hot swap, you must manually disable System Write Cache first (it may already be disabled due to the SPS failure.  Remove the inlet power to the SPS, disconnect the cables to the Storage Processor (one power cable and one sense cable).Remove the failed SPS, install the new SPS, re-cable the power cable to SP and the sense cable, then connect the inlet power to the SPS and power on. It may take some time for the battery to re-charge.  glen
Hi everyone I need a replace the Power Supply but anyone know how it is the procedure for doing so?, I need power off the storage? this change is "hot swap"? this change is online? help me please.  Thank you
CX4-5 Standby Power Supply A