Administrator Guide

RecoverPoint Appliance (RPA)
Hardware that manages all aspects of data protection for a storage group, including capturing changes, maintaining the images
in the journal volumes, and performing image recovery.
RecoverPoint cluster
All connected RecoverPoint Appliances on both sides of the replication.
RecoverPoint site
All RecoverPoint entities that are on one side of the replication.
Recovery Point Objective (RPO)
Recovery Point Objective. The time interval between the point of failure of a storage system and the expected point in the past
at which the storage system is capable of recovering customer data. Informally, RPO is maximum amount of data loss that can
be tolerated by the application after a failure. The value of the RPO is highly dependent upon the recovery technique used. For
example, RPO for backups is typically days, for asynchronous replication minutes, and for mirroring or synchronous replication
seconds or instantaneous.
Recovery Time Objective (RTO)
Recovery Time Objective. Not to be confused with RPO, RTO is the time duration within which a storage solution is expected to
recover from failure and begin servicing application requests. Informally, RTO is the longest tolerable application outage due to a
failure of a storage system. RTO is a function of the storage technology. It may measure in hours for backup systems, minutes
for a remote replication, and seconds (or less) for a mirroring.
redundancy
The duplication of hardware and software components. In a redundant system, if a component fails then a redundant
component takes over, allowing operations to continue without interruption.
registered array
An array that is registered with metro node. Registration is required to make the array available for services-based provisioning.
Registration includes connecting to and creating awareness of the array’s intelligent features. Only VMAX and VNX arrays can
be registered.
reliability
The ability of a system to recover lost data.
Remote Direct Memory Access (RDMA)
Allows computers within a network to exchange data using their main memories and without using the processor, cache, or
operating system of either computer.
Replica journal volumes
Volumes that hold:
● Snapshots that are either waiting to be replicated or already distributed to the replica
● Metadata for each image
● Bookmarks
Each replica journal holds as many snapshots as its capacity allows.
After distribution, the oldest snapshot is discarded to make room for the newest snapshot. The number of snapshots in the
journal depends on the size of the snapshots and the capacity of the volumes.
replication set
When RecoverPoint is deployed, a production source volume and one or more replica volumes to which it replicates.
replica volumes
Volumes to which production volumes replicate. In prior releases, the replica volume must be exactly the same size as its
production volume. In RecoverPoint (RP) 4.0 and GeoSynchrony release 5.2, RecoverPoint supports a feature called Fake Size,
where the replica volume size can be higher than the production volume.
Glossary
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