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Testing failover, Failover manual intervention – HP Storage Mirroring Software User Manual

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The following table identifies how the visual indicators change as the status of failover changes.

Testing failover

The failover process, including script processing, can be tested at any time. To force unavailability,

disconnect the network cable from a monitored machine, wait for the

Time to Fail counter to

decrease to zero and failover begins. To avoid the countdown delay, highlight the monitored machine

name in the Failover Control Center window and select

Failover.

Failover manual intervention

If

Manual Intervention

is enabled, the Failover Control Center will prompt you when a failure occurs.

Click

Cancel

to abort the failover process. If necessary, you can initiate failover later from the Failover

Control Center. Click

OK

to proceed with failover.

Time to Fail

Countdown

Status Bar

Colored

Bullets

Desktop Icon

Tray

Source is Online

The Time to Fail

counter is counting

down and resetting

each time a

response is received

from the source

machine.

The status bar

indicates that

the target

machine is

monitoring the

source

machine.

The bullets are
green.

a

a. When the

Time to Fail

value has decreased by 25% of the entire timeout period, the bullet

changes from green to yellow, indicating that the target has not received a response from the

source. The yellow bullet is a caution signal. If a response from the source is received, the

countdown resets and the bullets change back to green. If the countdown reaches zero without

the target receiving a response from the source, failover begins.

The Windows

desktop icon

tray contains a

failover icon

with red and

green

computers.

Source Fails and

Failover is

Initiated

The Time to Fail

countdown value is

0.

The status bar

displays the

source machine

and IP address

currently being

assumed by the

target.

The bullets are

red.

The Windows

desktop icon

tray contains a

failover icon

with red and

green

computers.

Failover is

Complete

The Time to Fail

counter is replaced

with failed message.

The status bar

indicates that

monitoring has

continued.

The bullets are

red.

The Windows

desktop icon

tray contains a

failover icon

with a red

computer.

NOTE:

If the Failover Control Center is not running at the time the failure occurs, the manual

intervention dialog box will appear the next time the Failover Control Center is started.
When a failure occurs, an alert is forwarded to the Linux system log. You can then start

the Failover Control Center and respond to the manual intervention prompt.
If SNMP is installed and configured, an SNMP trap is also generated. When using a

third-party SNMP manager, an e-mail or page can be generated to notify you of the

failure.

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