EMC Data Domain Interview Questions

EMC Data Domain Interview Questions

Question
Features of data domain ?
Answer
EMC Data Domain deduplication storage systems continue to revolutionize disk backup, archiving, and disaster recovery with high-speed, inline deduplication
 
Question
What is data domain?
 
Answer
 
Data domain is the EMC product. insead of tape we can use the data domain to take backup
 
Question
Where can we implement the data domain ?
 
Answer
We can use the data domian in the backup environment where it will give more speed , deduplication when compare to tape
 
Question
Why do we use Data Domain?
Answer
To take backup faster with data domian features
 
Question
What is the advantages when we are using DD with Emc networker ?
Answer
We can take the backup to data domain by using networker in more speed compare to tape
 
Question
Is VTL concept used in data domain ?
 
Answer
 
yea its used.
 
Question
 
What are the pre-requisites to enable aggregation?
Answer
Please refer the below link the same https://community.emc.com/docs/DOC-30141
 
Question
Explain prodcut features And basic requirement ?
Answer
The EMC Data Domain DD system lets you consolidate backup and archive data onto one easy-to-manage platform that provides the data protection your business needs. Data Domain systems are the fastest deduplication storage on the market. Inline deduplication reduces the amount of disk storage you need for backup data by an average of 10-30 times, making disk a cost-effective alternative to tape backup. You benefit from better data protection because you’ll complete more backups within limited windows. Data recovery is quicker because you can keep disk backups online and on-site for longer periods. Disaster recovery is cost-effective and fast because efficient deduplication lets you use your existing network to replicate data to your DR site. The Data Domain Data Invulnerability Architecture takes care of continuous recovery verification, fault detection, and self-healing, so you can always recover or access your data. Key features: EMC Data Domain DD2500 system supporting: Up to 13.4 TB/hr throughput Up to 6.6 PB logical capacity Up to 133 TB usable capacity Includes Data Domain System Manager, a web-based interface for data and replication management Integrates with leading backup and archiving applications.
 
Question
Explain features and main function for EMC DATA Domain ?
 
Answer
The EMC Data Domain DD system lets you consolidate backup and archive data onto one easy-to-manage platform that provides the data protection your business needs. Data Domain systems are the fastest deduplication storage on the market. Inline deduplication reduces the amount of disk storage you need for backup data by an average of 10-30 times, making disk a cost-effective alternative to tape backup. You benefit from better data protection because you’ll complete more backups within limited windows. Data recovery is quicker because you can keep disk backups online and on-site for longer periods. Disaster recovery is cost-effective and fast because efficient deduplication lets you use your existing network to replicate data to your DR site. The Data Domain Data Invulnerability Architecture takes care of continuous recovery verification, fault detection, and self-healing, so you can always recover or access your data. Key features: EMC Data Domain DD2500 system supporting: Up to 13.4 TB/hr throughput Up to 6.6 PB logical capacity Up to 133 TB usable capacity Includes Data Domain System Manager, a web-based interface for data and replication management Integrates with leading backup and archiving applications.
 
Question
Is any license required to use DD boost with NFS mount points?
 
Answer
yea license required for the DD boost
 
Question
Data Domain can be used only EMC or whether we can implement with 3rd parties storage & server
 
Answer
 
we can implement the data domian with any backup toosl like hp-dp , netbackup , tsm & commvault. all will support
 
Question
If it will support to deduplicate of the data, Then it will more time to take backup. Is it correct?
 
Answer
We will be taking the backup using VTL DD so backup will be very faster when compare to tape. we have DD boost for the backup the data in fast manner
 
Question
Which ports need to enabled at firewall for DD?
 
Answer
Port opening : https://community.emc.com/docs/DOC-33258 bsaed on port requirement we can open in forewall
 
Question
Is it take more time to restoration ?
Answer
 
If backup taken time is 1 hrs then the restoration time will take 1 & half hrs
 
Question
How to verify the h/w status and troubleshoot in case of failure?
Answer
we can check the data domain hw status in the dd console itself or else we can check the alerts or we can configure SMNP trap for the same
 
Question
In a Cloud Scenario, is there any relevance in asking of a particular RAID configuration ?
 
Answer
No relevance to raid configuration
 
Question
Could pls brief about the deduplication process, how DD is unique when compared to other vendors.
Answer
Here we have file-based dedup , fixed segment dedup , variable segment dedup , in-line dedup & dd dedup… when compare to other vendors, all are different concept