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The battery being referred to is on the RAID card. It protects the cache from an extended power down. 90 days before the cache battery is projected to fail messages are sent to the QSYSOPR and/or QSYSMSG message queues to schedule replacement and the problem is reported via ECS. When the battery fails, the RAID card stops using the cache so the disk operations have to wait for the actual writes to disk to complete which slows down the system. Kendall Kinnear System i5 Architect Stonebridge Direct Telephone Number: 972.419.7709 Or Toll Free: 800.776.9755 x7709 Cell Phone Number: 214-676-3146 Fax Number: 972.455.7260 Kendall.Kinnear@xxxxxxxx http://www.SBTI.com/ If you are interested in iSeries and application development, follow Angus' blog at http://www.angustheitchap.com/ -----Original Message----- From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Colin Williams Sent: Thursday, April 20, 2006 2:49 PM To: Midrange Systems Technical Discussion Subject: Re: Slow AS400 performance Am I the only one wondering why an as400 would need batteries? I can understand the need for them as a backup, or for retaining config values, but for normal use in hardware?
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