Hp Storage Mirroring Software User Manual Page 82
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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.
- Storage Mirroring for Linux 1
- User’s Guide 1
- Table of Contents 3
- Introduction 6
- Storage Mirroring operations 8
- Restoration 11
- Sample configurations 12
- One-to-one, active/active 13
- Many-to-one 14
- One-to-many 15
- Single server 17
- Virtual systems 18
- Resources 19
- Installation 20
- the block device and 25
- Client for Windows 28
- Management Console 30
- Storage Mirroring workspaces 32
- Failover Control Center 33
- Replication Sets 34
- Virus protection 35
- Creating a replication set 38
- New Replication Set 39
- Modifying a replication set 40
- Deleting a replication set 40
- 2. Select the Size tab 41
- Establishing a 42
- Connection Using the 42
- Connection Wizard 42
- Connection Manager 44
- Connection Across a 47
- NAT or Firewall 47
- Configuring the hardware 48
- Establishing the connection 48
- Simulating a 49
- Connection 49
- Managing Connections 51
- Monitoring connections 52
- 0 and 1000 55
- Monitoring the message window 56
- Understanding queuing 58
- Configuring queuing 60
- Disconnecting a connection 63
- Mirroring and 64
- Replication 64
- Starting replication 69
- Verification 70
- Scheduled verification 71
- Verification log 72
- Data Transmission 73
- Limit Type box 74
- Failover and Failback 78
- Monitoring failover 81
- Testing failover 82
- Failover manual intervention 82
- Initiating failback 83
- Monitoring Tools 87
- Log files 88
- Viewing the log files 89
- Log messages 90
- The target has been paused 92
- Linux System Log 95
- 5 minutes 106
- DTStat statistics 108
- Configuring SNMP 112
- SNMP statistics 113
- SNMP traps 115
- Server Settings 117
- 50, this value can 124
- 32768 bytes 124
- Database 127
- E-mail notification 129
- Send to test the e-mail 130
- OK to close the message 130
- Security 131
- 3. Click OK 132
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