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Avamar architecture and best practices
Avamar is backup-and-recovery software and it is also the hardware where the backup data is stored.
Used with Vblock systems, Avamar data deduplication technology seamlessly integrates and provides
rapid backup and restoration capabilities.
Avamar is integrated with VMware vSphere beginning with version 4.0. VMware has features that
protect VM images, called VMware‘s vStorage APIs for Data Protection (VADP). VADP produces in-
depth details of sizing, deployment, and data flow, providing a total VMware data protection plan that
can be used in conjunction with Avamar on Vblock systems.
The two most common recovery requests made to backup administrators are:
File-level recovery: File-level recoveries account for the vast majority of user support requests.
Common actions that require file-level recovery are individual users deleting files, application
recoveries, and batch-process-related erasures.
System recovery: Although complete system recovery requests are less frequent than file-
level requests, this capability is vital to the enterprise. Some common causes for full system
recovery requests are viral infestation, registry corruption, or unidentifiable unrecoverable
issues.
The Avamar integration with VMware delivers capabilities for both backup and recovery for either file-
level recovery or system-level recovery. Integration with vStorage API, virtual proxy server pools, and
changed block tracking allow Avamar to deliver extremely efficient data protection for Vblock systems.
There are several ways to implement the VCE data protection solutions for daily backup. The “best
possible method” really depends upon the exact customer requirements. The most common
recommendations would be:
For specific applications that require it, use the Avamar guest-level agents to backup daily
The Avamar agents ensure application-consistent data recovery.
Perform daily backup of each VMware guest server, also known as VMDK-level backup, using
CBT.
This provides rapid restore capability in the event of a server crash. It also supports single file-
level restore.
The following illustrates how combining both guest-level backup and server-level backup would be a
very smart way to protect a database:
Use the Avamar agent to backup the database once per day
This assures that the database is recoverable. Backing up a database more than once per day
is often not practical.
To speed up fully recovering a database, use the Avamar agent to backup the database log
files several times per day (staying outside of the Avamar daily maintenance windows)
Back up at the server-level the VM that hosts the database.
This assures a rapid restore in the event the server malfunctions.
Proxy server considerations:
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