| Question |
| What are ports should be open during installing EMC networker ? |
| Answer |
| While installation no need to open any ports as default port is enough but if there is firewall then we need to open the ports. NetWorker connection flow: Default NetWorker configuration results in the following connection flow for scheduled backups: server:conn->client:7938 (nsrrpc) server:conn->client:rpc/390113 (nsrexecd/7937) server:conn->client:svc (save) client:conn->server:7938 (nsrrpc) client:conn->server:rpc/390119 (nsrexecd/7937) client:conn->server:rpc/390436 (nsrauth/svc) client:conn->server:rpc/390103 (nsrd/svc) client:conn->server:rpc/390104 (nsrmmd/svc) client:conn->server:rpc/390105 (nsrindexd/svc) |
| |
| Question |
| |
| Explain what is storage node? |
| |
| Answer |
| Storage node is used to configure to take the SAN backup |
| |
| Question |
| What are ports should be open while installing emc networker. |
| |
| Answer |
| Service ports: 7937-9936 |
| |
| Question |
| What is pool ? |
| Answer |
| Pool is used to configure to run the backup of certain tapes. for example you can create a pool as default as assign 10 tapes to the pool. when you run the backup using the pool. it will use only that 10 tapes |
| |
| Question |
| How does the integration of EMC networker with Data Domain extends the capabilities of the backup application or is it just a replacement of the physical tape library with a VTL/disk-based backup ? |
| Answer |
| DD will have de-duplication , and its own architecture , encryption , DD boost. these features will make the backup complete 50% faster than the normal tape. replication also will easy in DD |
| |
| Question |
| What is procedure for RMAN restoration in Oracle database server from one client to another client ? |
| Answer |
| http://nsrd.info/documentation/modules/Oracle/Oracle_45_Admin.pdf check the page 98. it will have the procedure |
| |
| Question |
| Can we configure Networker server on a VM ? |
| Answer |
| Yea we can configure but we will get into huge performance issue as the backup data grows. mostly we will use only the physical servers with more RAM & CPU |
| |
| Question |
| |
| Networker service will run on all OS or is there any exception ? |
| Answer |
| |
| It will run on all Os. |
| |
| Question |
| |
| Backup server and storage node are different configurations or can be same? |
| Answer |
| its different configuration. to reduce the load on the backup server we will configure the storage node on different server. it is a storage node agent which we need to install |
| |
| Question |
| How we can configure an ndmp backup through storage node and what are all the pre-requisites and steps need to be taken care in networker. |
| Answer |
| Yes we can take. we need to zone the TL with backup server and configure storage node. in NDMP backup properties we need to specify the storage node as backup destination |
| |
| Question |
| What is the purpose of RAP? |
| Answer |
| It is not enabled default. if you need you can enable it. it will generate the RAP.log for the audit propose. where you can monitor the changes done by whom and when |
| |
| Question |
| |
| Explain autochanger and jukebox? |
| Answer |
| Both are same. it is the robotic arm in the TL where it is used to move the media |
| |
| Question |
| What is the procedure to configure DD to networker? |
| Answer |
| It is very easy to the configure the DD with networker. after the physical connectivity and zoning done. you can go to device tap in networker you will get the options as emc DATA domain. you need to give the required info and it will be configured successfully. details procedure you can get from EMC site or youtube |
| |
| Question |
| While running the backup in DD we are facing the below issue thorough command line . ORA-19506 ORA-270628 ORA-19511 |
| Answer |
| |
| It looks like permission issue error. check the oracle team. ask them to run the RMAN backup form there end. once its completed successfully. get the correct username and password and configure the same in networker |
| |
| Question |
| |
| What is the maximum distance that replication can be happened from source to destination in data domain through LAN, WAN and SAN. |
| Answer |
| LAN & SAN it will be within the DC.. for WAN its depends upon the bandwidth |
| |
| Question |
| What is difference between EMC AVAMAR AND Data Domain ? |
| |
| Answer |
| EMC Avamar is the backup appliance. DD can be used as disk or VTL to take backup |
| |
| Question |
| What is DD boost? |
| Answer |
| EMC Data Domain Boost: Advanced integration with backup and enterprise applications for increased performance and ease of use. Faster, More Efficient Backup Data Domain Boost distributes parts of the deduplication process to a backup server or application client, resulting in 50-percent faster backups and requiring up to 99 percent less local area network (LAN), wide area network (WAN), or storage area network (SAN) bandwidth. Advanced Load Balancing Aggregate transport links for transparent load balancing, automatic link failover and dynamic client routing. Simplified Disaster Recovery Enable backup administrators to control the EMC Data Domain replication process with full-catalog awareness when they use EMC Data Domain Boost for Backup Applications. |
| |
| Question |
| |
| How can we configure auto reports of backup like all backups taken in last one week/month, tape numbers used, retention period, data / file systems backed up? Is there any other method than scripts ? |
| Answer |
| |
| We can use EMC DPA tool for the same ? |
| |
| Question |
| I have to backup 10 TB of data on daily basis with all unix clients and backup server also unix. What type of architecture is best suited in this condition and why ? |
| Answer |
| Use networker with Data domain. it will have de-duplication , encryption and backup will run fast. it will reduce the load of the client server by using DD boost. it will give 50% better performance when compare to normal tape backup |
