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  2. MIDRANGE-L
  3. May 2015

Re: Cache Battery question

That's not correct, the controllers DO charge the batteries. Think about what would happen if they didn't, you lose power for a few hours and your server goes down. The battery holds the cache during that time and of course discharges partially in that effort. When power is restored you bring up the system no problem. If the batteries did not get charged by the controller then the remaining battery life might not be sufficient to hold up the cache during your next outage.
In addition it is no longer legal to transport bulk batteries of this type in the U.S. with a full charge. As a consequence most batteries installed are only partially charged and the controller completes the charge. 

        - Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com

On 5/15/2015 5:28 PM, Holger Scherer wrote:


The 1000 days lifetime of a battery usually can be reached when the
systems is up and running 24x7 - if the box is shutdown and later
restarted (at night, for example) this amount can reduce dramatically.
Also - if you have cheap replacement batteries which are not fully
charged this can happen - the controllers do not charge the batteries.

-h

Am 15.05.15 um 23:07 schrieb broehmer@xxxxxxxxxxxxxxx:


So is there some kind of magic IBM has with their batteries that we
can't replace a "like" battery with?

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