Users Guide

Property Denition

Next Learn Time Displays the number of days and hours left before the controller rmware initiates the next learn

cycle.

Maximum Learn Delay Displays the maximum number of days and hours that you can delay the battery learn cycle. The

controller rmware automatically initiates the battery learn cycle. You cannot stop or pause the

learn cycle, but you can delay it. For more information, see Initiating The Battery Delay Learn

Cycle and Starting A Learn Cycle.

Related links

Battery Properties And Tasks

Starting A Learn Cycle

Does my controller support this feature? See Supported Features.

Select the Start Learn Cycle task to initiate the battery learn cycle.

The battery learn cycle discharges and then fully charges the controller battery.

The learn cycle recalibrates the battery-integrated circuit so that the controller can determine whether the battery can maintain the

controller cache for the prescribed period in the event of a power loss.

While the learn cycle is in progress, the battery may not be able to maintain the cache during a power loss. If the controller is using

Write-Back Cache policy, then the controller changes to Write-Through Cache policy until the learn cycle completes. The write-

through cache policy writes the data directly to the disk and reduces the risk of data loss in the cache during a power outage.

NOTE: If you have set the controller to Force Write-Back Cache policy, then the cache policy is not changed during the

learn cycle. When using Force Write-Back Cache policy, it is possible for data loss to occur if there is a power outage

while the learn cycle is in progress.

The controller rmware automatically initiates the learn cycle every 90 days. You can, however, delay the start time of the learn cycle

for a further seven days, after which the rmware automatically initiates the learn cycle.

106