Differential replication
When using differential replication, consider the following:
Configuring transport failover options
Replication transport actions occur through HotAdd — LAN-free or network. If one transport method is not available, vRanger attempts to perform the replication task using one of the other transport methods. You may configure the order in which vRanger attempts the transport options with the Transport Failover node of the Configuration Options page. For VMware® ESXi™ hosts, configure the transport order to VA-based HotAdd > VA-based Network.
Pre-seeding replication jobs
To pre-seed replication jobs, complete the following tasks:
Backing up the source VM
Complete the steps in the following procedure to back up the source VM.
To back up the source VM:
Savepoints are named using a VMname_date_time_UUID format. Copy the entire directory, which contains a .var file and two .metadata files, for the savepoint in question.
5 Using the Restore from Manifest function documented in Performing a full restore from manifest for VMware VMs, restore the backup to the target VMware® ESXi™ Server at the DR site.Replicating the changes
Complete the steps in the following procedure to replicate the changes made to the VM.
To replicate the changes:
2
5 In the Select Target Host dialog box, next to Preseed VM UUID, click the browse button, and select the pre-seeded VM.Only the data changes pass over the WAN as opposed to the full VM.
Creating a replication job
To create a replication job, complete the following tasks:
Selecting the source VM
Complete the steps in the following procedure to select the source VM.
To select the source VM:
1 Click My Inventory.
2
3Selecting a target host
On the Select Target Host page, complete the following steps to select a target host.
To select a target host:
▪
▪ If you have pre-seeded the VM on the target host, select the host on the target side to which the source VM has been restored. For more information, see Pre-seeding replication jobs. When selecting the target VM name, ensure that you are using the same name as the source VM. vRanger appends “_VzReplicate” to the VM name on the target side.
2 [Optional] In the Select Target Host dialog box, next to Preseed VM UUID, click the browse button, and select the pre-seeded VM.
IMPORTANT: After a replication job has been saved, you cannot change the target host. If you want to replicate to a different host, you may either use VMware vSphere® vMotion® to migrate the VM to the preferred host, or create a replication job for the preferred target. If you vMotion the VM, the existing replication job should identify the change in host and adjust automatically.Selecting the replication mode
On the Replication Mode page, you can select between differential replication and hybrid replication. For more information, see Replication modes.
To select the replication mode:
1
NOTE: Hybrid replication is not supported when replicating to or from VMware® ESXi™. This feature is deprecated for vRanger 7.2 and later.
2 Click Next.Selecting replication network mapping
To select replication network mapping:
1 Select the Network Mapping you want to use for this job.
2 Click Next.Selecting hard disks
To select hard disks:
You may select a Primary Datastore, which is used as the default for all disks in this job, letting you configure only the exceptions.
2 In the Target Datastore column, verify that the Primary Datastore has been populated.
3 If you want the disk to replicate to a different datastore, click the browse button (…) next to the Target Datastore selection.
4 On the Select Primary Storage page, review the list of datastores.
6Selecting replication options
To select replication options:
NOTE: vRanger maintains the existing VM notes in VMware® vCenter™, appending the replication status to the end.This option enables the VMware® Tools when creating a snapshot. Use this flag if you are replicating a database server. During this process, vRanger freezes or pauses writes on supported applications to provide a consistent image of VSS-enabled databases. For more information, see Physical backup transport options.
Selecting this option enables ABM, which lets vRanger skip data that recognized as removed on Windows® NTFS — including junk data in recycle bin.
If you want to change the Transport Failover order, click Modify. For more information, see Configuring transport failover options.
3 Click Next.
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