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HP Storage Mirroring Software User Manual

Page 335

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Workload protection

Page 334 of 677

The GeoCluster Replicated Disk resource must have at least two
possible owners to function properly.

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Basic resource health check interval—This setting is formerly known as
the Looks Alive poll interval. It specifies how often the resource is polled to
determine whether it is still running on the active node. You can choose the
standard time period of 5 seconds, or you can specify your own value.

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Thorough resource health check interval—This setting is formerly known
as the Is Alive poll interval. It designates how often the possible owners are
polled to determine whether the specified disk on each node can be written
to and read from. You can choose the standard time period of 1 minute, or
you can specify your own value.

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Run this resource in a separate Resource Monitor—You should enable
this option so that each GeoCluster Replicated Disk resource runs in its own
monitor.

5. Connection parameters—This tab controls disk replication, network routing, and

orphan files for Storage Mirroring Recover.

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Disk to replicate—The volume to replicate

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Network to route Double-Take mirroring and replication traffic over
The network to use for Storage Mirroring Recover mirroring and replication
traffic. If you do not have multiple networks established, you will only be able
to select the one network that does exist. If you do not select a network,
GeoCluster will use DNS to determine a network route to use.

Ideally, the networks used for various traffic should be separated. This is
dependent on the number of networks that you established when you created
the cluster and the priority assigned to each network. For example, if you
have two network routes, separate GeoCluster and your public traffic. If you
have three routes, separate the public traffic and then separate GeoCluster
from the cluster heartbeat.

Modifications to either of the first two settings will not take effect until the next
time the resource is brought online.

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Interval to check unresponsive nodes—The frequency to determine how
often an unresponsive node is checked to see if a Storage Mirroring Recover
connection can be made

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Delay connection until resources dependent on this one are online
This option allows you to delay a Storage Mirroring Recover connection until
any resources that have the GeoCluster Replicated Disk resource as a
dependency are online. By ensuring that all resources that are dependent on
the GeoCluster Replicated disk resource are online before starting the
connection, the chance of a conflict occurring because application resources