Coyote Point Systems Equalizer Spezifikationen PDF herunterladen (Seite 425)

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101

c. If the "Failed Probe Count" configured on the subnet is reached BEFORE the Global "Failed

Probe Count" a failover will occur.

3. If Equalizer determines that no other systems own any of its cluster or failover IP addresses AND it has

better connectivity than the peer, it becomes "Primary" otherwise, it will remain a "Backup".

Heartbeating MUST be established on an interface before failover can occur. If failover is configured between

two peers, and the cable is removed from the primary peer, the backup will assume the role as the new primary.

If the cable is removed from the "new" primary BEFORE heartbeating has been reestablished with the previous

primary, this peer WILLNOT failover since heartbeating was never reestablished.

Releases Supported for Failover with EQ/OS 10

An Equalizer running EQ/OS 10 can be configured into failover with another Equalizer running either of these

releases:

l EQ/OS 10

l EQ/OS 8.6 (latest release)

Note - Failover is

not

supported between EQ/OS 10 and any release prior to EQ/OS 8.6.0c.

Guidelines for Upgrading a Failover Pair

from EQ/OS 8.6 to EQ/OS 10

The preferred method of upgrading the OS from EQ/OS 8.6 to EQ/OS 10 is:

1. Upgrade the preferred backup Equalizer to EQ/OS 10, while it is in backup failover mode. Refer to "Version

8.6 Upgrade Procedure" on page 58 for instructions.

2. Configure the EQ/OS 10 unit and the EQ/OS 8.6 unit into failover, with the EQ/OS 8.6 unit as the preferred

primary. Run the two units in failover to validate that the units are communicating properly as observed on

the EQ/OS 10 unit.

3. Test failover to EQ/OS 10 by rebooting the EQ/OS 8.6 system so that the EQ/OS 10 system becomes the

current primary. Then, reboot the EQ/OS 10 unit to test failover to the EQ/OS 8.6 unit.

4. While the EQ/OS 8.6 system is the current backup, upgrade it to EQ/OS 10. Verify that the units are

communicating properly. Reboot each unit to ensure that the other unit assumes the primary role.

Guidelines for Updating a Failover Pair with

Both Units Using EQ/OS 10

The following guidelines should be adhered to when upgrading a failover pair between two EQ OS 10 systems.

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Equalizer Administration Guide

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