NTT DATA, Inc. Storage Administrator Interview Questions and Answers

Q1. Zoning, Raid,Luns, switch types, Topologies,
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Q2. What is RAID and Raid 5 ,Raid 6 Types
Ans. 
RAID stands for Redundant Array of Independent Disks. RAID 5 and RAID 6 are types of RAID configurations for data storage.
• RAID (Redundant Array of Independent Disks) is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.

• RAID 5 uses block-level striping with distributed parity....read more
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Q3. What is Topologies and types
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Topologies refer to the layout of a computer network, while types refer to the different configurations within a topology.
• Topologies include bus, ring, star, mesh, and hybrid

• Types within a topology include LAN, WAN, MAN, and PAN

• Examples: Bus Topology, LAN Type
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Q1. Current CTC, Exp CTC, Company Details,
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Q2. Role and Responsible
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Q1. Storage bull shit question
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Q2. Bull shit questions all
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Englishwer apptitude test all bull shit type

Q1. Where do you see yourself in next 5 years
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Q2. Would you relocate?
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Q1. Technical interview
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Q2. Technical core questions
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Q1. Technical interview
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Q1. Regarding salary discussion
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Q1. Yours role and responsibilities in the team
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Q2. As an storage Whats your role in the team
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Q3. What is zonning .And have you ever been part of upgradation ?
Ans. 
Zoning is a method of dividing a storage area network (SAN) into smaller, isolated sections to improve performance and security.
• Zoning is used to control access to specific resources within a SAN.

• It can be done at the port level, device level, or WWN level.

• Zoning can be hard or soft, depending on whether it is enforced by hardware or software.

• Upgrading a SAN may require changes to zoning configurations to accommodate n...read more
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Q4. On what storage devices you have worked yet
Ans. 
I have worked on various storage devices including SAN, NAS, DAS, and cloud storage.
• SAN (Storage Area Network) devices such as EMC VMAX and IBM DS8000

• NAS (Network Attached Storage) devices like NetApp FAS and EMC Isilon

• DAS (Direct Attached Storage) devices including external hard drives and USB drives

• Cloud storage platforms like Amazon S3 and Microsoft Azure Blob Storage
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Q5. Difference between san and nas
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SAN is a dedicated network for storage while NAS uses existing network infrastructure for storage.
• SAN is a block-level storage while NAS is file-level storage.

• SAN is faster and more expensive than NAS.

• SAN requires specialized hardware while NAS uses standard hardware.

• SAN is used for high-performance applications while NAS is used for file sharing and backup.

• Examples of SAN include Fibre Channel and iSCSI while examples
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Q6. Types of san protocols
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SAN protocols include iSCSI, Fibre Channel, FCoE, and InfiniBand.
• iSCSI uses TCP/IP to transmit SCSI commands over Ethernet networks.

• Fibre Channel is a high-speed network technology used for storage networking.

• FCoE is a protocol that encapsulates Fibre Channel frames over Ethernet networks.

• InfiniBand is a high-speed interconnect technology used for data centers and HPC environments.
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Q1. Vol creation in netapp
Ans. 
Vol creation in Netapp involves creating a new volume on the storage system.
• Use the 'vol create' command in the Netapp CLI to create a new volume.

• Specify the volume name, size, and other parameters during the creation process.

• Volumes can be created on aggregates to store data.

• Ensure proper permissions and access controls are set for the new volume.
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Q2. Upgrade process in San and netapp
Ans. 
The upgrade process in SAN and NetApp involves planning, testing, and executing firmware or software updates to improve performance and security.
• Ensure to backup all data before starting the upgrade process

• Check compatibility of new firmware or software with existing hardware and applications

• Schedule downtime for the upgrade to minimize impact on operations

• Test the upgrade in a non-production environment before applyin...read more
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Q1. Be strong in your basics, that should do.
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Q2. RAID, RTO/RPO, Basics of SAN troubleshooting, Basics of NAS troubleshooting.
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Q3. RAID, RPO/RTO, SAN, NAS
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