Configuring the Interface Expander continued
Behavior of | If power returns before any connected server has signaled |
Confirmed mode | shutdown of the operating system, the Interface Expander |
| returns to On Line status. |
| If the Interface Expander detects a Low Battery condition in |
| the UPS before all connected servers have signaled shut- |
| down of the operating system, it notifies the servers that the |
| UPS battery is exhausted, shutting down the UPS after the |
| Low Battery Signal Time has elapsed. |
| If utility power returns after at least one server has con- |
| firmed shutdown of the operating system, but before all |
| servers have confirmed system shutdown, the Interface |
| Expander forces On Battery and Low Battery signals so that |
| the remaining servers shut down as well. The Interface |
| Expander sends the forced Low Battery signal for a period |
| of time equal to the Low Battery Signal Time and then shuts |
| down the UPS, which cycles power to restart the servers. |
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|
Confirmed | If you configure the Interface Expander in Confirmed shut- |
shutdown mode | down mode by setting DIP switches 1, 2, and 3 in the down |
and the | (0) position, you must set DIP switch #4 to determine the |
Advanced port | behavior of the server or device connected to the Advanced |
| port. |
| When the Interface Expander is configured for Confirmed |
| mode, DIP switch #4 behaves as follows: |
| • With DIP switch #4 in the 0 (down) position, the |
| Advanced port operates normally, awaiting shutdown |
| confirmation in the Confirmed shutdown mode. |
| • With DIP switch #4 in the 1 (up) position, the Inter- |
| face Expander treats the Advanced port as always |
| confirmed. Use this setting when the Advanced port |
| will not be receiving a shutdown confirmation signal. |
| Note:When the shutdown mode of the Interface Expander is |
| set to Until Low Battery or Timer, the position of DIP switch |
| #4 has no effect. |