Quest Engineering DL1300, Руководство по развертыванию

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DL1300 Appliance
Deploying Smart Agents
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Common use cases
This section provides the most common use cases for the DL1300 and provides a high-level overview of the
information and procedures required for each scenario. Where required, references to additional information is
provided.
Protecting machines
The AppAssure backup and replication technology provides advanced protection of VMs or servers while enabling
flexible application and data recovery. When a machine is protected, full and incremental snapshots of data are
captured and stored in the core’s repository. The AppAssure protection process leverages two key technologies –
Snapshots and the Quest DL1300 Smart Agent that are described below.
Parent topic
Snapshots
The AppAssure Agent for Windows uses Microsoft Volume Shadow copy Service (VSS) to freeze and quiesce
application data to disk to capture a file-system-consistent and an application-consistent backup. When a
snapshot is created, the VSS, writer on the target server prevents content from being written to the disk. During
the process of halting of writing content to disk, all disk I/O operations are queued and resume only after the
snapshot is complete, while the operations already in flight will be completed and all open files will be closed. For
more information, see topic Snapshot Process .
Parent topic
Quest DL1300 Smart Agents
The Smart Agent is installed on the machines that are protected by the DL1300 Core. The Smart Agent tracks the
changed blocks on the disk volume and then snaps an image of the changed blocks at a predefined interval of
protection. The incremental block-level snapshots’ forever approach prevents repeated copying of the same data
from the protected machine to the Core. When the snapshot is ready, it is rapidly transferred to the Core using
intelligent multi-threaded, socket-based connections. For more information, see the topic Quest DL1300 Smart
Agent .
Parent topic
Deploying Smart Agents
You must install the AppAssure Agent Installer on every machine in your environment protected by the DL1300
Core.