HP UPS Network Module User Guide

Configuration parameters

Shutdown parameters

Follow these shutdown principles when configuring the shutdown parameters:

•

The Shutdown initiated after (SIA) value entered for the UPS Network Module must be equal to or greater than the HPPP Client configured with the longest SIA time. Otherwise, the Client starts to shutdown at the same time as the UPS Network Module.

•

The Operating system shutdown time (OST) value entered for the UPS Network Module must be equal to or greater than the HPPP Client configured with the longest OST. Otherwise, it is automatically replaced by the longest OST when the Client is connected. The updated value is displayed on the

Shutdown Parameters screen for the UPS Network Module.

•

After the operating system shutdown begins, the shutdown process cannot be canceled, even if utility power is restored.

•

For load shedding, each Client is shutdown based on its own delay settings. This increases the backup time for the remaining Clients.

•

The UPS Network Module waits until the operating system is shut down before powering down the load segments.

•

The UPS is powered down after all load segments are powered down.

•

If any other condition, such as the Remaining Backup time under or Battery capacity under value being reached occurs during the SIA time, the UPS Network Module starts the shutdown process earlier.

Configuration parameters 54

This following example describes the shutdown parameters for a UPS with two load segments, four connected servers that have HPPP Clients installed on each server, and one UPS Network Module.

Item

7

8

5

6

9

10

3

4

1

2

11

12

Description

Utility failure

Utility restore

Utility

Client 1on load segment 1

Client 2 on load segment 1

UPS Network Module setting for load segment 1

Load segment 1

Client 3 on load segment 2

Client 4 on load segment 2

UPS Network Module setting for load segment 2

Load segment 2

UPS

On utility t1 t2 t3 t4 t5, t6, t7

On battery (SIA)

Operating system shutdown time (OST)

Utility failure—UPS is on battery, and all servers are powered as usual

Shutdown process initiated—Shutdown scripts run, applications close, and the operating system shuts down

All servers are completely powered down. Load segments power down, and then the UPS powers down.

Utility restore

The UPS, load segment 1, and load segment 2 are powered up

When the utility power is lost, the example UPS behaves as follows:

Configuration parameters 55

1.

2.

3.

On load segment 1: a.

Client1—The UPS Network Module waits until t2 to start OST. The server is powered down before t3. b.

Client2—The UPS Network Module waits until t2 to start OST. The server is powered down sometime t3. c.

UPS Network Module—The UPS Network Module waits until t2 to send shutdown commands to load segment 1 and all Clients. Load segment 1 powers down at t3.

On load segment 2: a. b.

Client3—Because the OST of this Client is the longest, it replaced the OST of the UPS Network

Module after it was connected to the UPS Network Module. Client 3 powers down as configured.

Client4—Because the SIA of the UPS Network Module is less than that of Client 4, the UPS Network

Module starts the shutdown process first. Client 4 is forced to start its OST at the same time. c.

UPS Network Module—The UPS Network Module waits until t2 to initiate the shutdown sequence 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 OST.

UPS—Between the two OST of UPS Network Module on load segment 1 and load segment 2, the UPS starts its countdown at t2 of UPS Network Module on load segment 2, because it received the shutdown command from it first and then powered down at t3 of UPS Network Module on load segment 2 also because it ends last.

When the utility power is restored, the example UPS behaves as follows:

1. t5—If the Battery capacity exceeds condition exists, the UPS is powered on.

2.

3. t6 and t7—If the Switch On after condition exists, the LS is powered on.

If Automatic Power ON is enabled in the BIOS setup of the Client server, the server will be powered on as soon as power is detected.

Configuration parameters 56