Specifications

Migrating to a Multi-Site Cluster Environment

The SteelEye Multi-Site Migrate feature is included in the SteelEye Protection Suite for Linux Multi-

Site Cluster product. This additional feature enables an administrator to migrate an existing SteelEye

Linux LifeKeeper environment to a Multi-Site Cluster Environment. The migration procedure allows

selected shared file system’s resources to be safely migrated and replicated with minimum hierarchy

downtime.

Following are a few important considerations when creating a Multi-Site resource from an existing file

system:

l The Multi-Site migrate procedure will un-mount the file system during the creation process and

remount it on a NETRAID device.

l Any applications that depend on this file system will need to be stopped during the create

resource procedure. This action is handled by the Migrate procedure; no administration action

is required.

l Hierarchies containing the following resource types cannot be migrated using the Multi-Site

migration feature– NAS (scsi/netstorage), DRBD (scsi/drbd), SDR (scsi/netraid) and Multi-

Site Cluster resource (scsi/disrec).

Requirements

Prior to performing a migration, make sure your systems meet the requirements described in the

Installation and Configuration section of this document. In addition to the more general SDR

requirements outlined in the Installing SDR section, you must have Novell’s SLES 11, SLES 10 or

Red Hat Enterprise Linux 5 installed on each system in your cluster. This feature is defined for

configurations that have two servers that share a storage device. One of the servers is considered the

primary and is located at a primary site. A third server is remote and located at a disaster recovery

site.

After you have installed the SteelEye Protection Suite for Linux Multi-Site Cluster on the primary node

and other shared storage nodes, there is no additional installation or configuration required to take

advantage of the Migrate feature.

Before You Start

The following image depicts a file system resource hierarchy prior to performing a migrate.

324Multi-Site Cluster