Replication Of Disaster Recovery Site Or Service Provider; Recovery; Product Features - Dell DL4000 User Manual

AppAssure uses Microsoft VSS because it has built-in support for all Windows internal technologies such
as NTFS, Registry, Active Directory, to flush data to disk before the snapshot. Additionally, other enterprise
applications, such as Microsoft Exchange and SQL, use VSS Writer plug-ins to get notified when a
snapshot is being prepared and when they have to flush their used database pages to disk to bring the
database to a consistent transactional state. It is important to note that VSS is used to quiesce system and
application data to disk; it is not used to create the snapshot. The captured data is immediately
transferred and stored on the Core. Using VSS for backup does not render the application server in
backup mode for an extended period of time because the time taken to create the snapshot is seconds
and not hours. Another benefit of using VSS for backups is that it lets the AppAsssure Agent software to
take a snapshot of large quantities of data at one time because the snapshot works at the volume level.

Replication of disaster recovery site or service provider

The replication process requires a paired source-target relationship between two cores. The source core
copies the recovery points of the protected machines and then asynchronously and continuously
transmits them to a target core at a remote disaster recovery site. The off-site location can be a
company-owned data center (self-managed core) or a third-party managed service provider's (MSP's)
location, or cloud environment. When replicating to a MSP, you can use built-in workflows that let you
request connections and receive automatic feedback notifications. For the initial transfer of data, you can
perform data seeding using external media, which is useful for large sets of data or sites with slow links.
In the case of a severe outage, your appliance supports failover and failback in replicated environments.
In case of a comprehensive outage, the target core in the secondary site can recover instances from
replicated protected machines and immediately commence protection on the failed-over machines.
After the primary site is restored, the replicated core can fail-back data from the recovered instances back
to protected machines at the primary site.

Recovery

Recovery can be performed in the local site or the replicated remote site. After the deployment is in
steady state with local protection and optional replication, the Core allows you to perform recovery using
Verified Recovery, Universal Recovery, or Live Recovery.

Product features

You can manage protection and recovery of critical data using the following features and functionality:
• Repository
• True Global Deduplication (Features)
• Encryption
• Replication
• Recovery-as-a-Service (RaaS)
• Retention and archiving
• Virtualization And Cloud
• Alerts and Event Management
• License portal
• Web console
• Service Management APIs
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