We had a battery pack go not long ago on our 9406-720. The battery pack on our card was a typical cell phone type battery pack, (one of the bundle of 3 AA type batteries with a wire plug types). The pack is directly on the card (IOA or IOP, I forget which) you'll need to be careful to keep your cables straight, and you'll need to make sure you're going for the right card if you have more then one array (we have 3 arrays of 15 each, so there's a lot of room for error on our system if you don't know how to read the SST card positions, etc) My suggestion would be to look for a 3rd party service provider, and contract out the repair. If you get a phone battery instead of the IBM branded battery, you'll save quite a bit of money, and a decent service provider won't charge an insane amount for the hour or so of work they'll do. one note, no matter what you do, get a fresh full system save before you down the box, and replace the battery. with an older system, there's a chance that one or more of the drives may not spin back up, among other possible problems. (always better safe then sorry) If you're located in their service area, I can recommend the provider that we use if you want, just send me a private message with you're location (even if you're outside of their service area, I'll see if they can recommend someone for you) good luck with your battery, Kevin ============================================================ For a model 170, this <a href="http://publib.boulder.ibm.com/infocenter/iseries/v5r3/index.jsp?topic=/rzar5/rzar5bat2740.htm">Cache battery pack</a> link might be your best bet. The battery should be placed in the Error state before you do anything. This causes the system to stop write caching before the battery is removed. Thousands of pages of disk writes can be in cache and you need to ensure that those are written before any battery support is removed. Read the instructions before doing anything. There are important warnings. Example:<ul> <li><b>Important:</b> Removing the Cache Battery with the System/Partition in a powered off state may result in the loss of customer data. If the system has been powered down PRIOR to the battery service action, you MUST IPL to DST and continue this procedure BEFORE replacing the battery.</li> </ul> There are numerous later procedures for different hardware. A google search such as { write cache battery site:ibm.com } can find most of them along with a variety of discussions. Tom

We had a battery pack go not long ago on our 9406-720. The battery pack on our card was a typical cell phone type battery pack, (one of the bundle of 3 AA type batteries with a wire plug types). The pack is directly on the card (IOA or IOP, I forget which) you'll need to be careful to keep your cables straight, and you'll need to make sure you're going for the right card if you have more then one array (we have 3 arrays of 15 each, so there's a lot of room for error on our system if you don't know how to read the SST card positions, etc) My suggestion would be to look for a 3rd party service provider, and contract out the repair. If you get a phone battery instead of the IBM branded battery, you'll save quite a bit of money, and a decent service provider won't charge an insane amount for the hour or so of work they'll do. one note, no matter what you do, get a fresh full system save before you down the box, and replace the battery. with an older system, there's a chance that one or more of the drives may not spin back up, among other possible problems. (always better safe then sorry) If you're located in their service area, I can recommend the provider that we use if you want, just send me a private message with you're location (even if you're outside of their service area, I'll see if they can recommend someone for you) good luck with your battery, Kevin ============================================================ For a model 170, this <a href="http://publib.boulder.ibm.com/infocenter/iseries/v5r3/index.jsp?topic=/rzar5/rzar5bat2740.htm">Cache battery pack</a> link might be your best bet. The battery should be placed in the Error state before you do anything. This causes the system to stop write caching before the battery is removed. Thousands of pages of disk writes can be in cache and you need to ensure that those are written before any battery support is removed. Read the instructions before doing anything. There are important warnings. Example:<ul> <li><b>Important:</b> Removing the Cache Battery with the System/Partition in a powered off state may result in the loss of customer data. If the system has been powered down PRIOR to the battery service action, you MUST IPL to DST and continue this procedure BEFORE replacing the battery.</li> </ul> There are numerous later procedures for different hardware. A google search such as { write cache battery site:ibm.com } can find most of them along with a variety of discussions. Tom