1 .What is a master server & media server?
The master server manages backups, archives, and restores. The master server is responsible for media and device selection for NetBackup. Typically, the master server contains the NetBackup catalog. The catalog contains the internal databases that contain information about NetBackup backups and configuration.
Media servers provide additional storage by allowing NetBackup to use the storage devices that are attached to them.
During a backup or archive, the client sends backup data across the network to a NetBackup server. The NetBackup server manages the type of storage that is specified in the backup policy.
During a restore, users can browse, then select the files and directories to recover. NetBackup finds the selected files and directories and restores them to the disk on the client.
2)What is volume pools & volume Groups?
Volume pool contains pool of backup medias and volume group contains location of volumes.
3 What is media multiplexing?
Its nothing but distributing the data across multiple media for a backup job.
5)What does these status codes mean- 216, 256,298,50?
216 - failed reading retention database information
256 - An internal Vault error occurred.
298 - This error occurs if the robotic library is not in a state to support ejecting media.
50 - The client backup terminated abnormally. For example, this error occurs if a NetBackup master or media server is shut down or rebooted when a backup or restore is in progress.
6)What is the process of importing images and why do we import images?
When you need to restore a backup which is expired from the netbackup catalog you have to import the image.
7)What does it mean by inventoring a robot?)What is media multiplexing?
Inventory robot is done to recognize new tapes inserted into the library.
Your answer for media multiplexing is wrong.
ReplyDeletesingle drive allowing multipul types of data form different clients
ReplyDeletemultiplexing is incorrect
ReplyDeleteThe process of sending concurrent-multiple backups from one or more clients to a single storage device and interleaving those images onto the media
ReplyDeleteMultiplexing : Multiplexing sends data from multiple clients to a single tape drive.
ReplyDeleteThis is useful for low end clients with slow throughput (such as over a slow network connection). Since these clients cannot send data fast enough to keep the tape drive busy, multiplexing will allow backups of multiple clients to send data to a single tape drive simultaneously. Multiplexing is the process of alternately sending (interleaving) data. In this case, alternately writing or interleaving multiple clients data to a single tape.
in one media taking backup multiple client.
ReplyDeleteWell you guys took 3 to 4 years to tell his answer on MEDIA-MULTIPLEXING is wrong? great :p ...Anyway atleast you were aware of it now....or the thread came to your view just now :)
ReplyDeleteHi
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can someone send the dumps to vinayj1214@gmail.com as I want to appear for the netbackup certification 7.0 7.1 or 7.5 in February 2014.
ReplyDeleteMy contact number is 9000034534 or 8341207546
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