Remote Replication; Dxi6900 System - Quantum DXi6900 User Manual

Chapter 1: System Description

Remote Replication

data to existing data in the block pool. Unique blocks are added to the block pool and known blocks are
indexed.
The space reclamation function searches the blockpool for data blocks that are not referenced by any
pointers (that is, the files associated with the block have been expired and removed). Once such a data block
is identified, the block is removed to make the space reusable.
For correct system operation, space reclamation must be run at regular intervals (at least once a week).
Quantum recommends creating a schedule to automatically run space reclamation (see ).
It may be beneficial to schedule space reclamation for a time when other operations are not normally being
carried out. Therefore it is important to know when to schedule the space reclamation process. As best
practice it is recommended that this process commences at least two hours after your backup job has
completed on a daily basis. It is far more efficient to process a day's worth of new data than a week's worth.

Remote Replication

Today most backup occurs on isolated devices, making it difficult to deploy disk backup when disaster
recovery protection is required. DXi-Series solutions use data deduplication and replication to decrease by
up to 50 times the bandwidth required to move backup data over networks and between sites. This dramatic
gain makes it practical and cost-effective for users to replicate backup data over WANs for secure, network-
based disaster recovery protection, and it lets users combine rapid, local restores with sound disaster
recovery protection.
With DXi-Series replication, users can transmit data from a single site or multiple sites to a central location
using any DXi model. DXi-Series replication is an asynchronous, automated background process that
includes encryption of data in transit. This model for protecting the distributed enterprise allows users to
combine disk, replication, and tape for an optimal combination of performance, simplicity, and security.
For more information on implementing a replication plan, see

DXi6900 System

DXi6900 G1 Features
The DXi6900 G1 includes the following features:
Feature
Node
Array modules (RBOBs)
Quantum DXi6900 User's Guide
Description
1 Node
1 or 2 Array modules (RBODs)
Remote Replication.
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