EMC Networker 8.0 Interview Questions
| Question |
| How can we avoid device mismatch error on emc networkers? |
| Answer |
| Device mismatch error comes if there is no persistent name used while configuring the devices. To resolve this :- 1. Take the backup of /nsr/mm folder 2. Delete the existing library and tape drives 3. use command line # jbconfig -p ( p for persistent binding) |
| Question |
| While adding the client on networker server,what are all the things we need to do? |
| Answer |
| Ensure below things before adding networker clients :- 1.Number of client license need to be added in networker server 2.Bi-directional communication between networker server and client 3.Networker client software should be installed on client 4.Install agent package if any application or other feature integration required 5.Enable the networker client related port, if the exists DMZ 6.Add the installed client in networker via NMC console |
| Question |
| What are the new features available in networker 8.0 ? |
| Answer |
| Below are features come with Networker 8.0 1)Optimized disk reading 2)Multi-Tenancy Facility option 3)NetWorker support for ASR disaster recovery of Windows XP and 2003 clients 4)Support for enabling of SELinux on Linux platforms 5)Checkpoint restart backups for NDMP client And so on. |
| Question |
| How many license required for cluster basis MSSQL? what are the licence names? |
| Answer |
| Below license are required for MS SQL cluster:- 1.Two Networker client license 2.Two MS SQL application agent |
| Question |
| What are the log files used in troubleshooting backup issues in networker 8.0 . |
| Answer |
| Below are the common troubleshooting files need to be referred :- 1)Daemon log file daemon.raw 2)NMC server log file gstd.raw 3) NetWorker User log file networkr.raw (Microsoft Windows only) 4)Application Administrators log file audit_server_name_sec_audit.raw 5)Client push log file nsrcpd.raw |
| Question |
| How to configure VADP backup? |
| Answer |
| In order to configure VADP :- 1.Activate the networker client and Virtual Edition Client Connection license in networker 2.Install the client agent in Vcenter server 3.Configure the proxy settings in networker end 4.Discover VM clients in networker and configure the backup as per the requirement. |
| Question |
| What is the steps to migrate from networker 7 to networker 8 ? |
| Answer |
| Steps involved:- 1.Networker License Verification and Enabler Code Upgrade with EMC 2.Catalog Consistency Verification 3.Taking Backup Of Index/Bootstrap 4.Stopping the Networker Services 5.Upgrading Networker to 8.0 Server,Storage Nodes and Clients 6.Updating Networker Database + Enabler Code in NMC |
| Question |
| How to configure networker client in Linux and add to the server ? |
| Answer |
| Follow below steps:- 1. Make sure communication is proper between networker server and client 2. Add the required client license in networker server 3. Install lgtoclnt package in client server 4. Add the client in networker server via NMC |
| Question |
| What are basic components of EMC Networker |
| Answer |
| Basic components of networker are Networker server, storage node,NMC server, clients and licensing server. |
| Question |
| What is the difference between EMC networker,avamar and data domain? |
| Answer |
| 1)Both of them are dedupe technologies, but the biggest difference is that avamar dedupes at the client level. Data domain dedupes at the networker server/storage node level 2)Avamar can be used as a standalone dedup backup appliance, while also having the option to integrate it within EMC Networker. 3)Datadomain act as VTL, CIFS/NFS share and intergrating with newest NW versions with DDboost. 4)Avamar is especially good in cases of many, smaller files, while datadomain is better suited for large databases (larger than 4TB). |
| Question |
| In upgradation of networker version from 7.6 to 8.0 what is sequence of upgrade i.e. Client, Storage node and Server? |
| Answer |
| Sequence during upgradation will be Networker server, storage node then client |
| Question |
| We are getting error “failed to start nsrsnmd on host..”. How can we resolve this error? |
| Answer |
| To resolve this error :- 1.Verify the entries of servers file under “Networker_Install_Pathnsrres” 2.Make sure there is an entry for the networker server name 3.Restart Networker services on the backup Server. |
| Question |
| What about Networker Licensing Model? |
| Answer |
| Two licensing features available :- 1.Traditional license :- Contain a small number of backup clients, supports basic backup technology, such as standard clients and tape backup 2.Capacity license :- Contain a large number of backup clients, The backup clients can include physical clients, virtual clients, deduplication clients, and application clients. |
| Question |
| what are the step required to restore filesystem backup which are taken from client A and restore to Client B . |
| Answer |
| To do the redirected restore can be done at client end or at the networker server end. For client end :- 1.Open the networker client GUI 2.Browse the source and destination client 3.Select the required savesets 4.Start the recover process Server end :- |
| Question |
| How to set automatic tape recycle as the retention time completion basis? |
| Answer |
| There are two retention parameters i.e browse policy and retention policy. Browse policy is for browsing the index at networker end and retention is how long we need to keep the data on target device. Select these parameters accordingly for automatic recycle. |
| Question |
| How storage node work?? |
| Answer |
| Storage node act as interface between networker server and client, mainly takes care of I/O between server,client and target device. |
| Question |
| Is the browse and the retention policy need to be same? |
| Answer |
| Browse and retention not necessary to keep same. |
| Question |
| What are all the option to keep the end point backup tape on outside of tape library in EMC? is it possible? |
| Answer |
| Yes its possible, if retention is expired , we can import the index by scanning. |
| Question |
| How we can enable software compression ? |
| Answer |
| Preconfigured directives will be there by default, we can define in group. |
| Question |
| I had installed NMM and Networke 8.0 client in one SQL server , but from server end its not detecting as SQL client , how to remap map the same manually to server? |
| Answer |
| To re-map:- 1.Remove the existing client entry at networker server 2.Remove the lockbox at networker server end 3.Restart the networker client services 4.Re-add the client as SQL server type |
| Question |
| What are the new features enabled on EMC networker 8.0 with respect to Backup and Recovery |
| Answer |
| Below are features :- 1)Optimized disk reading 2)Multi-Tenancy Facility option 3)NetWorker support for ASR disaster recovery of Windows XP and 2003 clients 4)Support for enabling of SELinux on Linux platforms 5)Checkpoint restart backups for NDMP client |
| Question |
| Unable to start nmc console it shows unable to open jre? i had also updated java(jre) but same error continous?how to resolve it |
| Answer |
| To resolve :- 1)Make sure sufficient space available at root directory 2)Clear the browser cache and also change the browser and recheck 3)stop and start the gst services 4)if issue still exists, do graceful restart of the backup server |
| Question |
| Is it possible to migrate 32bit Networker7.6 to networker 8.0 64bit? |
| Answer |
| yes its possible |
| Question |
| We are getting error ” unable to connect server ,unable to authenticate with server : auhtentication error” while adding client. how to resolve this? |
| Answer |
| To resolve :- 1. Delete the client if already added at NMC 2. print and delete the client’s old authentication method using nsradmin command 3.Restart the networker services at client 4. Re-add the client via NMC console |
| Question |
| Does nwrecover (Recovery GUI) command executes on networker 8.0 version installed on Solaris/ Aix OS? |
| Answer |
| By default, it wont be there, recover package is required. |
| Question |
| what is storage node, NMC server and licensing server |
| Answer |
| NMC server is networker management console its a GUI interface console utility. Storage node is acting as media server take care of I/O operations and target device. Licensing server is dedicated server to maintain the networker licenses, usage and capacities. |
| Question |
| How to configure file system backup on windows cluster |
| Answer |
| 1. Install the Networker client on both the physical nodes 2. Add the client in NMC using cluster virtual name. |
| Question |
| Is there any firewall rule change required in 8.0 compare to 7.x if the client server communication through a firewall?what is the use of port 111? |
| Answer |
| No manual firewall rule change required. Port 111 is a portmapper, this port is required to communicate from networker to data domain. |
| Question |
| After upgrading the networker version gtom 7.x to 8.0 lock boxes for oracle clients are not working , what is the procedure to retain lock boxes while upgrading to 8.0 |
| Answer |
| 1)Rename the lockbox directory in, for example, C:Program FilesLegatonsrlockbox 2)Delete the lockbox resource in Networker 3)Create the a new instance of the client into a new test group 4)Perform backup and confirm it works 5)Delete old client instance and assign the new one to the correct group |
