HP R1500 - UPS XR User Manual page 56

On load segment 1:
1.
Client1—The UPS Network Module waits until t2 to start Operating system shutdown time. The
a.
server is powered down before t3.
Client2—The UPS Network Module waits until t2 to start Operating system shutdown time. The
b.
server is powered down sometime before t3.
UPS Network Module—The UPS Network Module waits until t2 to send shutdown commands to
c.
load segment 1 and all Clients. Load segment 1 powers down at t3.
On load segment 2:
2.
Client3—Because the Operating system shutdown time of this Client is the longest, it replaced the
a.
Operating system shutdown time of the UPS Network Module after it was connected to the UPS
Network Module. Client 3 powers down as configured.
Client4—Because the Shutdown initiated after value of the UPS Network Module is less than that of
b.
Client 4, the UPS Network Module starts the shutdown process first. Client 4 is forced to start its
Operating system shutdown time at the same time.
UPS Network Module—The UPS Network Module waits until t2 to initiate the shutdown sequence
c.
for load segment 2 and the other Clients. Load segment 2 powers down at a new t3, which is the
same as the longest Client Operating system shutdown time.
UPS—The UPS starts the countdown at t2 of UPS Network Module on load segment 2, and then powers
3.
down at t3 of UPS Network Module on load segment 2 because the associated shutdown command
occurs first and ends last compared to the Operating system shutdown time of UPS Network Module on
load segment 1.
When the utility power is restored, the example UPS behaves as follows:
t5—If the Battery capacity exceeds condition exists, the UPS is powered up.
1.
t6 and t7—If the Switch On after condition exists, the load segment is powered up.
2.
If Automatic Power ON is enabled in the BIOS setup of the Client server, the server powers up as soon
3.
as power is detected.
Configuration parameters 56