Online Global Dependency
In an online global dependency, a child group must be online on a system in the cluster before the parent group can come online.
| Online Global
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Failover System for Child Group
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No Failover System for Child Group
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Child Fails
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Soft
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- Child faults.
- Child fails over.
- Parent continues to run on original system.
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- Child faults.
- Child dies.
- Parent continues to run on original system.
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Firm
|
- Child faults.
- Parent taken offline.
- Child fails over.
- Parent restarts on a system based on the service group's failover policy.
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- Child faults.
- Parent taken offline.
- Both groups die.
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| Online Global
|
Failover System for Parent Group
|
No Failover System for Parent Group
|
|---|
Parent Fails
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Soft
|
- Parent faults.
- Parent fails over.
- Child continues to run.
|
- Parent faults.
- Parent dies.
- Child continues to run on original system.
|
Firm
|
- Parent faults.
- Parent fails over.
- Child continues to run on original system.
|
- Parent faults.
- Parent dies.
- Child continues to run on original system.
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FAQ for Online Global Dependency
- Can parent group be brought online when child group is offline?
Soft=No Firm=No Hard=No.
- Can child group be taken offline when parent group is online?
Soft=Yes Firm=No Hard= No.
- Can parent group be switched while child group is running?
Soft=Yes Firm=Yes Hard=Yes.
- Can child group be switched while parent group is running?
Soft=Yes Firm=No Hard=No.
Online Remote Dependency
In an online remote dependency, a child service group must be online on a remote system before the parent can come online on the local system.
| Online Remote
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Failover System for Child Group
|
No Failover System for Child Group
|
|---|
Child Fails
|
Soft
|
- Child faults.
- Child fails over.
- If child fails over to the system on which parent was online, the parent restarts on a system different from the child. Otherwise, parent continues to run on original system.
|
- Child faults.
- Child dies.
- Parent continues running.
|
Firm
|
- Child faults.
- Parent taken offline.
- Child fails over.
- If child fails over to the system on which the parent was online, the parent restarts on a system different from the child. Otherwise, parent restarts on original system.
|
- Child faults.
- Parent taken offline.
- Both groups die.
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| Online Remote
|
Failover System for Parent Group
|
No Failover System for Parent Group
|
|---|
Parent Fails
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Soft
|
- Parent faults.
- Parent fails over to system without child. If the only system available is where child is running, parent is not brought online.
|
- Parent faults.
- Parent dies.
- Child continues running.
|
Firm
|
- Parent faults.
- Parent fails over to system without child. If the only system available is where child is running, parent is not brought online.
|
- Parent faults.
- Parent dies.
- Child continues running.
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FAQ for Online Remote Dependency
- Can parent group be brought online when child group is offline? Firm=No Soft=No.
- Can child group be taken offline when parent group is online? Firm=No Soft=Yes.
- Can parent group be switched while child group is running? Firm=Yes, but not to system on which child is running. Soft=Yes, but not to system on which child is running.
- Can child group be switched while parent group is running? Firm=No Soft=Yes, but not to system on which parent is running.
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