Backup & Recovery replication task

Backup & recovery tasks consist of:

• source - dataset or zvol with the data we want to back up
• source retention plan - schedule plan that states how often snapshots of a resource will be made and how long they will be kept; the shortest interval also manages when and how often the created snapshots will be sent to the destination
• destination - a dataset or zvol where we want to keep the backup data; when you choose the dataset as a source in destination only datasets will be available, backups can only be made from a dataset to datasets and a from zvol to zvols
• destination retention plan - schedule plan that states in which intervals the received backup snapshots should be kept and for how long
• VMware VSphere integration - if we have a datastore created on a source resource before the snapshot of source is made, Vsphere makes a snapshot of every virtual machine on the datastore, so that the data on the datastore will stay consistent (on virtual machines for this snapshot)
• task description - your own task description
• mbuffer - buffers data stream on source and destination to prevent buffer underruns and, if used correctly, to speed up the whole backup process 

Tasks can be:

• created without destination - it allows you to create local snapshots creation routine
• created with local destination - destination can be some other resource on the same or different pool
• created with remote destination - destination servers can be added in the “Destination servers” tab, but also in a wizard
• disabled/enabled - you can stop creating and sending snapshots to destination if required