| PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.1 (Linux) |
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Contents
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| Chapter 1 Function |
A snapshot of the volume for the service application (a replication at a certain moment) can be created on another volume. The former is referred to as a master volume and the latter as a proxy (or an alternate) volume.
You can create a snapshot, or a copy of the master volume using the proxy volume.
Using this proxy volume will resolve to various issues.
For example, stopping a system with a large amount of data for backup purposes is becoming more and more difficult.
Conventionally, data was backed up overnight when no one was on the system. However, as the amount of data grows, backup often cannot be completed by the following morning.
Also, the widespread usage of Internet and service diversification has made it impossible to stop many systems.
Since the proxy volume can be accessed separately while the service application is accessing the master volume, users can run a backup application in parallel without worrying about the time.
By using the proxy volume, users can conduct various tasks such as non-disruptive backup, data analysis, verification, and data protection from disaster, without affecting the main service application.
The user can utilize given logical volumes managed by GDS as master volumes or proxy volumes. It also provides snapshot operation that is consistent with GDS's various volume management function, such as access control function.
The snapshot functions using a proxy volume are explained here.
1.5.1 Snapshot by Synchronization1.5.2 Snapshot Function with No Load to the server/SAN1.5.3 Instant Snapshot by OPC1.5.4 Instant Restore1.5.5 Online Disk Migration|
Contents
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