In this article, we will be discussing all the different aspects of the Commvault deduplication process, followed by features, benefits, and its usage. So let’s dive into the topic to know more about the Commvault data deduplication process and its effects.
Let’s understand what Deduplication is all about :
Data deduplication is nothing but a data compression process where it will identify and eliminate a duplicate set of data blocks during the data backup activity.
The data deduplication can also be called as :
So how does this process actually identifies whether a particular data block is a duplicate or not?
So, according to the data deduplication process, the incoming data segments are analyzed with the stored data within a system. Based on the analysis, if the data exists, then the deduplication process will not allow the data to flow through.
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Let’s consider an example to understand the deduplication process better:
Assume that the document is already available in the repository. Now, the same document has some edits. So when the data deduplication process is executed, the document will be updated with the latest changes.
On contrary, if the user is trying to load the same file again to the repository, then the data deduplication algorithms will allow the document to flow and the old record of the same file will be deleted and the newer document will be saved.
Now, as we know about the deduplication process, let’s understand more about the global deduplication method.
Within the global deduplication process, if the data is copied over to one node, and if the same data is copied over to the second node, then it will recognize that the data exists in the first node and no copy extra copy of the data is made.
Compared to the single node deduplication process, the global deduplication process is much better. Global deduplication technology is the preferred option for businesses if they are dealing with multiple data backup targets for large data centers.
The benefits associated with Global deduplication technology:
The core point of deduplication is to effectively manage database backup activity and make sure that there is no redundant data stored. To effectively implement the dedupe system, the organizations/users need to understand the capabilities, and also their limitations.
So, having these limitations in mind will definitely help the users to get the best out of the deduplication process and the data backup is done effectively.
The entire process is explained as a workflow:
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In this section, we will discuss commvault deduplication best practices:
With the data deduplication process in place, a lot of disk space is saved by not allowing data duplication during the backup activity. So, to effectively utilize the benefits of the deduplication process, organizations need to understand their limitations as well.
The best practices that we can be used, i.e., Do’s for data deduplication:
The best practices that can be avoided, i.e., Don'ts for data deduplication
A new generation of deduplication process is implemented by Commvault. The new generation process includes a one-stop solution for all the data backup needs where you can still get flexibility and scalability.
Simpana software is the new version of the deduplication process introduced by Commvault. With this software, the following features can be utilized to streamline the data backup activities.
One of the best features that the CommVault deduplication process offers is capturing critical user data backup activity is carried out and it takes less time and bandwidth. The process also supports all kinds of devices like laptops, desktops, etc.
With its unique process, the amount of data stored on the tapes is effectively managed. Doing this will reduce the cost associated with media and vaults.
Reduces the backup time and the impact on the network when a source side deduplication process is initiated.
All the backup requests of remote offices can be routed to a single instance where a site to site limitation can be set for the bandwidth requirements.
The deduplication ratio plays an important role in terms of determining the effectiveness of the data dedupe process. The ratio of 10:1 represents that 10 times worth of data can be protected based on the actual physical space.
So, how does the deduplication ratio is calculated?
It is the total capacity of the backup data divided by the actual physical capacity that is available.
They are several factors that affect the deduplication ratio, and they are listed below.
Monitoring Deduplication database:
With the help of the Deduplication database, the below areas are monitored.
With the help of charts, the user will be able to see information like:
The following monitoring procedure will help you view the data.
The below section will cover how to configure the CommVault Deduplication process:
In this example, we will consider the Dell PowerVault DL2100 in conjunction with Commvault Simpana 8 ( Advanced deduplication edition). The advanced version of CommVault is capable of delivering end to end block-based deduplication process where the usage of MediaAgent disk storage is reduced to a considerable amount.
So, the below configuration settings will help the user to understand how to achieve higher performance by going through the deduplication process.
Let us understand the general guidelines which are common for everyone:
To have these configuration settings enabled, let’s understand the process in detail:
Firstly, one has to create a separate primary storage policy copy, and, also, to make sure that the deduplication process is enabled by using the relative storage policy wizard.
Point to remember: never ever store the deduplication stores to the PowerVault DL2100 internal system (C:)
Configuring the system for block-level deduplication factor:
In this process, we will be able to set the deduplication factor at the block level on the primary storage policy copy. Also, we will have to enable deduplication.
Enabling sub-client software compression and deduplication:
The following process will help you understand to enable deduplication.
Apply the Spill and Fill Mount Path:
The following process should be used to apply the spill and fill mount path to PowerVault DL2100 magnetic library:
Configuring service package 3 for Simpana 8 is installed:
With the use of service package 3 within Simpana 8, the deduplication performance pack will be an added advantage to the system. This package should be installed to achieve high performance.
The following process can be used to identify whether the package is installed or not:
The Service Package 3 cannot be installed on the system with the use of an Automatic feature update on CommVault Simpana 8.
In this article, we have covered all the aspects of CommVault Deduplication. With the help of this guide, we can understand the industry best practices that can be followed. With the use of Deduplication features, one can achieve the best results when it comes to data backup activity and can also streamline the process. Using the industry best practices for Deduplication, we can definitely achieve better data backup management activity.
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Vinod M is a Big data expert writer at Mindmajix and contributes in-depth articles on various Big Data Technologies. He also has experience in writing for Docker, Hadoop, Microservices, Commvault, and few BI tools. You can be in touch with him via LinkedIn and Twitter.
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