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(Answer) (Category) iSeries / AS400 FAQ : (Category) Operations :
How do I check the status of my cache batteries?
Admin Alert: Checking Your iSeries Batteries by Joe Hertvik
You may not realize it, but your iSeries boxes contain a set of nickel batteries, which are used as cache battery packs on your systems' I/O adapters. And, like any battery, they eventually have to be replaced; otherwise your system may start to malfunction. This week's "Admin Alert" explains how to check the batteries on your system, so you can determine when they need to be replaced. For more information see: http://www.midrangeserver.com/fhg/fhg060204-story04.html
rob
The above article not only explains WHY you should check the status of your
cache batteries (like system performance may decline significantly if the 
batteries are dead) but HOW you can check them.

Prior to V5R3 you used to:
STRSST
1. Start a service tool
4. Display/Alter/Dump
1. Display/Alter storage
2. Licensed Internal Code (LIC) data
roll down
14. Advanced analysis
1=Select  for  BATTERYINFO
for Options type in -INFO -ALL and press enter
Then roll through and check all that.
Sample output:
Battery Life Information for Resource DC01
  Serial Number. . . . . . . . . . . . . : 1C-4018107
  IOA Type-Model . . . . . . . . . . . . : 2757-001
  Frame ID - Card Position . . . . . . . : 3C02-C02
  Battery type . . . . . . . . . . . . . : Lithium Ion (LiIon)
  Battery State. . . . . . . . . . . . . : No battery warning/error was issued
  Power on Time (days) . . . . . . . . . : 300
  Adjusted Power on Time (days). . . . . : 351
  Estimated time to warning (days) . . . : 505
  Estimated time to error   (days) . . . : 582
  Concurrently maintainable battery pack : No
  Battery pack can be safely replaced. . : No

Now, in V5R3, IBM has made this process a little easier.
STRSST
1. Start a service tool
7. Hardware service manager
9.  Work with resources containing cache battery packs
5=Display battery information
Sample output:
Resource name . . . . . . . . . . . :  DC01
Serial number . . . . . . . . . . . :  1C-4018107
Type-model  . . . . . . . . . . . . :  2757-001
Frame ID  . . . . . . . . . . . . . :  3C02
Card position . . . . . . . . . . . :  C02
Battery type  . . . . . . . . . . . :  Lithium Ion (LiIon)
Battery state . . . . . . . . . . . :  No battery warning/error
Power-on time (days)  . . . . . . . :    300
Adjusted power-on time (days) . . . :    351
Estimated time to warning (days)  . :    505
Estimated time to error (days)  . . :    582
rob
The article mentioned at the top of this FAQ has changed locations.  Here is the new location:
http://www.itjungle.com/fhg/fhg060204-story04.html

Bill
bubbzbill
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