18 December, 2020
CommVault is the most demanding skill in 2021. According to Forbes, there are wonderful opportunities for freshers and experienced candidates in the tech market. The share value of CommVault eventually increased to 4.3%. So it is clear that CommVault will be one of the future skills in 2021.
If you are looking for CommVault Interview Questions and Answers? Then you’re at the right place. Our experts compiled Top 40 CommVault Interview Questions and Answers for freshers and Experienced, which will help you clear the interview.
Ans: Commvault is an information management platform where your information can be secured utilizing its software items. The software items are equipped for taking up reinforcements and have a recovery executive process.
Ans: CommVault is a data and the executives' arrangement that offers to manage and protect your business information. CommVault is a publicly-traded software organization established in 1988, situated in the United States of America. This product can be utilized for cloud management, data backup, and recovery. CommVault, which is also known as Simpana, Software empowers us to access and utilize their information, anyplace, and whenever transforming the information into a ground-breaking vital resource. This software solution revamps the data's security for the expansive NetApp storage portfolio, and many firms use the CommVault as a reinforcement for the information recuperation purpose.
Ans: Following are some of the features of CommVault:
Ans: Following are various ways of doing High Availability:
Ans: The storage policy typically relies on customer reinforcement and storage plans. It characterizes which data should be stored and what kind of data should be stored. Further, the information is stored in a secured environment.
Ans: Following are various types of Storage Policies in CommVault:
Ans: CommVault had only one primary copy, and for that, there will be auxiliary types of copies. There are three auxiliary/secondary types of Copies in CommVault:
Selective Copy: A Selective copy is a cycle that will permit a person to duplicate a particular set of reinforcements from a source copy. The source can be one of the accompanying, primary copy, or asynchronous copy. A selective copy turns out better for tape rotation.
Synchronous Copy: In Synchronous copy, it includes primary data from the source copy.
IntelliSnap Backup Copy: In this copy phase, both the essential and auxiliary duplicates are stored to be accessible during the reinforcement stage. If the auxiliary storage doesn't have the necessary space, then the backup task will fail.
Ans: Deduplication is a proficient method of sending and storing the information by eliminating and duplication the information during backup. DDB Backup Subclient secures deduplication DataBase (DDB). When duplication is enabled, storage policy and DDB backup subclient are also under the media customer agent and file system agent where the DDBs are facilitated.
Ans: Following are the steps to configure the CommVault proxy:
Step1: Right-click on the customer PC to be utilized as a Commvault proxy from the Commvault browser and select the properties.
Step2: From the properties dialog box, click on the Network button and select the configure firewall settings checkbox.
Step3: Click on the choices tab and pick "this PC is in DMZ and will function as a proxy checkbox."
Step4: Click on the incoming connection tab and select add.
Step5: Select the CommServe_client_name from the list.
Step6: From the State list, select RESTRICTED and click OK.
Ans: The global deduplication strategy furnishes a typical deduplication database(DDB) that can be shared by different storage strategy duplicates. It permits the deduplication of information from various copies, which results in eliminating excess information.
Ans: A Commcell climate is the legitimate gathering of all the software segments that manage, transfer, and secure the information. It consists of clients, MediaAgent, and CommServe hosts.
CommServe - It is the central management element that organizes and executes all Commcell activities.
MediaAgent - It is an information transmission administrator in the Commcell climate, which empowers high-performance information that develops and handles information storage libraries.
Client - A Client is a legitimate gathering of agents that characterize movement, protection, and management of information related to the clients.
Ans: CommServe DR is equipment which comprises of Copy DR sets this gives CommServe facilities and reestablishes the CS DR systems.
Ans: Commvault software consists of various modules for searching, analyzing, protecting, and replicating the information; all these modules share similar back-end services and advanced capacities to consistently interface with one another.
Information is ensured by installing agent software on the virtual or physical hosts that utilization the application's local APIs or working frameworks to secure information in a predictable state. This information is then supported up through Media Agent to the plate, tape, or distributed storage. The whole information is managed by a centralized server is also known as CommServe.
Ans: The utilization of the proxy server is primarily to decrease the load on the production server. The proxy servers utilize the reinforcement activities to pass the snapshot of the data to reinforcement media.
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Ans: During the backup copy tasks the accompanying operations are executed:
1.The snapshot of the data is mounted to the ESX server which is exclusively assigned for the snap mount.
2. When the snap is mounted then it is treated as a file framework and the necessary elements are prepared and read.
3. The reinforcement of the file framework is performed to the Primary duplicate of the storage strategy.
4. When the reinforcement duplicate occupation is done, at that point the snapshot will be unmounted.
Ans: Following are the most frequent backup failures that are reported by the clients:
Ans: You can make another scratch pool and all the required media can be transferred to the scratch pool. A sub-customer is appended to a scratch pool which will be utilized. This procedure can possible at two levels they are:
Copy policy level
Ans: A Silo is a cluster of disk volume files that are related to the Deduplication Database. It contains the deduplicated information that is composed of the disk storage.
Ans: A hash algorithm is utilized in the deduplication operation in the Commvault at whatever point a square of information is perused from the source and an exceptional mark is created for the square of information utilizing a hash algorithm.
Ans: The default block size for deduplicated storage policies is 128kb.
Ans: This is a common answer and the ratio that can be able to maintain so far is:
Ans: To gain access to reports, go to the web browser by clicking the URL in a browser. Sign in to the account and click on 'Reports'. On account of a private measurements reporting server, you will have the option to see the reports in the CommCell console.
Ans: Intellisnap reinforcement is utilized to develop a point-in-time snapshot of the information. It is primarily used for taking backup of live information and afterward proceeding with the live activities.
Ans: Cloning is only duplicating something while a snapshot creates an underlying copy and afterward rolls out, resulting in improvements. Both cloning and snapshot are granted as acceptable methodologies for disaster recovery.
Ans: The VMware reinforcements are prepared in an accompanying way:
1. Typically, VMware snapshot reinforcements are performed utilizing the intermediary servers.
2. Inside the intermediary servers, we will establish a software called Virtual server agent, for example (VSA)
3. So commvault conveyed through Vcenter.
4. Where a snapshot of VM is performed, and it is mounted in an intermediary server as it were.
5. From the intermediary server, the snapshot picture is sponsored up with the reinforcement cycle usage and will take care of the media agent.
Ans: IntelliSnap recovery manager (IRM) is utilized to implement hardware storage operations snapshot into a recuperation procedure with no impact on the production server. It likewise gives a unified setup wizard through which you can configure policies, storage media and etc.
Ans: CommVault replenishes productive backup and restores functionalities to any firm. Following are various types of backups that are available in CommVault:
Synthetic Full Backup
Selective Online Full Backup
Ans: The accompanying procedure will assist a person in configuring the cluster backup in CommVault:
Ans: Three types of transport nodes are available in VMware backup:
The information is transmitted through a protected TCP/IP association between the ESX server and the proxy PC. This is a procedure where the information is passed within the NBD mode.
The above procedure is the same and the information is transmitted through a protected TCP/IP association between the ESX server and the proxy PC. Still, the information will be encrypted for NBDSSL.
Ans: Following are the three building components of CommCell Environment:
CommServe: This is the essential management component that performs all the CommCell information tasks.
Media Agent: This is an information transmission manager framework that empowers significant level information development execution and handles the information storage packages.
Client: A client is a coherent group of information agents that executes assignments like the movement of information association, data protection, and management.
Ans: The reinforcement administrator should screen whether all the booked positions are running as they are assigned. If not, at that point, they need to experience the positions and comprehend the blame and correct the equivalent.
Further, they need to include themselves with a portion of the accompanying well-being tests:
Ans: The reinforcement copy activity permits you to duplicate a snapshot of the information to any media. The essential snapshot stores the metadata data related to the snap reinforcements and when the reinforcement duplicate activity is running, the essential depiction information is replicated to the media related to the essential duplicate.
The reinforcement duplicate can be designed in two ways:
Inline Backup Copy- Run during IntelliSnap reinforcement work.
Offline backup Copy- Run freely of the IntelliSnap reinforcement work.
Ans: Yes, it is endeavor level software. Utilizing Commvault software is essential; it is developed without any preparation and has various modules that can be used independently.
Ans: ContinuousDataReplicator (CDR) repeats information from the source to the objective. It gives information security and recovery for a wide range of information, including application information and record frameworks.
Ans: DDB seeding is a predefined work process that permits transferring baseline reinforcement among two destinations utilizing a removable disk drive.
Ans: Commvault programming runs a structure block approach for information the executives. A structure block is a mix of worker and capacity to ensure informational indexes paying little heed to the information's sort or birthplace.
Deduplication Building Blocks will permit you to secure enormous information measures with negligible foundation, better adaptability, and quicker reinforcements.
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