Specifications

Creating a DataKeeper Resource Hierarchy
Field Tips
Switchback
Type
You must select intelligent switchback. This means that after a failover to
the backup server, an administrator must manually switch the DataKeeper
resource back to the primary server.
CAUTION: This release of SteelEye DataKeeper does not support Automatic
Switchback for DataKeeper resources. Additionally, the Automatic
Switchback restriction is applicable for any other LifeKeeper resource sitting
on top of a DataKeeper resource.
Server
Select the name of the server where the NetRAID device will be created
(typically this is your primary server). All servers in your cluster are included
in the drop down list box.
Hierarchy
Type
Choose the data replication type you wish to create by selecting one of the
following:
l Replicate New File System
l Replicate Existing File System
l DataKeeper Resource
Bitmap File
Select or edit the name of the bitmap file used for intent logging. If you choose
None, then an intent log will not be used and every resynchronization will be a
full resync instead of a partial resync.
Important: The bitmap file should not reside on a btrfs filesystem. Placing
data replication bitmap files on a btrfs filesystem will result in an "invalid
argument" error when LifeKeeper tries to configure the mirror. The default
location for the bitmap file is under /opt/LifeKeeper. This default location
should be changed if /opt/LifeKeeper resides on a btrfs filesystem.
Enable
Asynchronous
Replication ?
Select Yesto allow this replication resource to support asynchronous
replication to target systems. Select No if you will use synchronous
replication to all targets. You will be asked later to choose the actual type of
replication, asynchronous or synchronous, when the replication resource is
extended to each target server. (See Mirroring with SteelEye DataKeeperfor
a discussion of both replication types.) If you want the replication to any of
these targets to be performed asynchronously, you should choose Yeshere,
even if the replication to other targets will be done synchronously.
The next sequence of dialog boxes depends on which Hierarchy Type you have chosen.
While some of the dialog boxes may be the same for each Hierarchy Type, their sequence and
the required information may be slightly different. The next three topics take you through the
remainder of the Hierarchy creation process.
l DataKeeper Resource
l Replicate New File System
l Replicate Existing File System
SteelEye Protection Suite for Linux285