HP Tower Uninterruptible Power System - Manual (Page 63)

Configuration and operation 63
Item Description
t1
Utility failure—UPS is on battery and all servers are powered as
usual
t2 Shutdown process initiated—Shutdown scripts run,
applications close, and then the operating system shuts down
t3 All servers power down completely, load segments power
down, and then the UPS powers down
t4 Utility restore
t5, t6, t7 The UPS, load segment 1, and load segment 2 power up
When the utility power is lost, the example UPS behaves as follows:
1. On load segment 1:
a. The HPPP Client 1 waits until t2 to start the operating system shutdown time. The server powers down
before t3.
b. The HPPP Client 2 waits until t2 to start the operating system shutdown time. The server powers down
before t3.
c. The HPPP Administrator waits until t2 to send shutdown commands to load segment 1 and all of the
Clients that are attached to load segment 1. Load segment 1 powers down at t3.
2. On load segment 2:
a. The HPPP Client 3 waits until t2 to start the operating system shutdown time. The server powers down
before t3.
b. The HPPP Administrator waits until t2 to start the operating system shutdown time, and then the
administrator sends shutdown commands to load segment 2 and all of the Clients that are attached
to load segment 2. The server powers down before t3, and load segment 2 powers down at t3.
3. The UPS powers down at t3 because both load segments power down at t3.
When the utility power is restored, the example UPS behaves as follows:
1. t5—If the Battery Capacity Exceeds condition exists, the UPS powers up.
2. t6 and t7—If the Switch On After condition exists, the load segment powers up.
3. If Automatic Power ON is enabled in the BIOS setup of the Client server, the server powers up as soon
as power is detected.
Scheduled Shutdown screen
Click Scheduled Shutdown in the menu tree to display the Scheduled Shutdown screen. While configuring
scheduled shutdowns, be sure to adhere to the following rules:
• The Restart Date/Time must be after the Shutdown Date/Time. If an Every Day shutdown frequency is
selected, the Restart Date/Time can be the day after the Shutdown Date/Time, but must be before the
next scheduled shutdown.