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I know there have already been a number of posts for this and I agree with
the folks about looking for someone who can think and not just recite
things, but at the same time am completely tired of hearing from people
who claim to know "NetBackup Exec" or "NetBackup 8.6" (the Backup Exec
version).
If they say they have NetBackup experience on their resume and they can't
tell me the difference between a volume pool and a volume group, then
there's a problem.
Asking the error number questions can be ok because when they do get stuck
you can always ask what they would do to figure it out (or see if they
bring this up on their own). I can't count the number of times someone
has automatically answered "pick up the phone and call support" instead of
looking in the manual or using bperror or something first.
Anyway, since I already had it typed up somewhere, here are some of mine.
many are leading questions, where the answer could be simple or turn into
something really long (depending on their level of knowledge of the
item)...
How do you configure a client for automatic backups?
What's the difference between diff incr and cumulative incr? What happens
when I mix them on Windows client... Unix client?
How is a changed file determined on Windows and what happens afterwards
for each type of backup? How is a changed file determined on Unix?
When would I, or would I not, use cross mount points?
What is the difference between a Volume Group and a Volume Pool?
How do you back up the catalog? Why is this important? What do you have
to do if you don't have a catalog backup?
How do you recover the catalog?
How do you configure retention levels for a backup?
If I install the Admin client on an NT workstation, what else has to be
done for it to work... be an authorized server?
What is multiplexing? What is multiple data streams? Are they the same?
Can I have one without the other... both... ? where are they configured?
What determines the number of jobs a client can run? What determines the
number of jobs that will go to a single drive?
What is OTM? TIR?
What format does NetBackup write the tape in?
How does NetBackup tie together with Media Manager?
How do I create a Storage Unit that will only be used by one client?
What is the difference between the expiration date for a volume in
NetBackup's media catalog and Media Manager's volume database?
What is the process in which NetBackup decides if a tape is available and
which one it will use? Will media servers share tapes? Will retention
levels be mixed on a tape? What happens if the requested pool is out of
tapes?
What is the difference between a frozen volume and a suspended volume?
How many Robot Control Hosts can a DLT tape library have?
What does the bpbkar process do? bpsched? bpbrm? bpdbm? ltid? What
process controls a DLT tape library... a DLT tape drive? What is the AVRD
process?
- Scott
"Goldfarb, Josh" <Josh.Goldfarb AT blackrock DOT com>
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu
03/26/2004 11:56 AM
To: <veritas-bu AT mailman.eng.auburn DOT edu>
cc: <david.chapa AT adic DOT com>
Subject: [Veritas-bu] Questions to ask a Netbackup Admin on an
interview
*interesting*
Please tell me if you think these questions are suitable and if you have
any additions, please let me know.
Basic:
Why is the catalog the most important component of Netbackup?
What does status 59 mean in the activity monitor?
If you have an exchange database backup with a status 1 in the activity
monitor what would you do?
On a windows box if you encountered a status 11, what is the problem?
Why is a binary catalog more efficient than an ASCII catalog?
--------
Intermediate:
What is BPRD?
If you have a SCSI attached robot and in device monitor you see the drives
marked as AVR, what does that mean and how would you fix it?
If I asked you to tell me if a client has Netbackup on it just by using a
telnet command what would you do?
If you wanted to know what IP address netbackup was using to perform
backups what command would you run and where would you run it?
If an exchange server has four storage groups, how would you set it up so
that all four databases get sent to a different tape drive at the same
time?
If you have an Exchange database on box ab1 and you want to set NBU to
backup both the database and "C:\, F:\, System_state" how would you set up
the policy and or polcies to do this while using the same volume pool?
If a media ID A04567 comes back and it is frozen, what are the steps to
unfreeze it and move it back to scratch from the command line?
----------
Expert:
If you wanted to bypass netbackup commands and move a tape from slot 1 to
drive 3 how would you do that?
What does this command do? Vmcheckxxx -rt tld -rn 0 brnyc-eb01 -vmhost
brnyc-eb01 -list?
If your last catalog backup was two days ago and the master server crashed
what would you have to do to bring your environment back up to present
time?
How do you find a disk based image via the command line and then delete
it?
>From the expert himself - Dave Chapa
-----------------------------
How do you import an NBU image that has been written to a disk storage
unit?
What are the critical catalogs or databases on a Media Server?
How would you tune NetBackup to increase backup performance?
Josh Goldfarb
BlackRock Financial Management Inc.
BlackRock Solutions - Technology USA
40 East 52nd Street
NY, NY 10022
Phone: 212.409.3702
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<br><font size=2 face="Arial">I know there have already been a number of posts
for this and I agree with the folks about looking for someone who can think and
not just recite things, but at the same time am completely tired of hearing
from people who claim to know "NetBackup Exec" or "NetBackup
8.6" (the Backup Exec version).</font>
<br>
<br><font size=2 face="Arial">If they say they have NetBackup experience on
their resume and they can't tell me the difference between a volume pool and a
volume group, then there's a problem.</font>
<br>
<br><font size=2 face="Arial">Asking the error number questions can be ok
because when they do get stuck you can always ask what they would do to figure
it out (or see if they bring this up on their own). I can't count the
number of times someone has automatically answered "pick up the phone and
call support" instead of looking in the manual or using bperror or
something first.</font>
<br>
<br><font size=2 face="Arial">Anyway, since I already had it typed up
somewhere, here are some of mine. many are leading questions, where the
answer could be simple or turn into something really long (depending on their
level of knowledge of the item)...</font>
<br>
<br><font size=2 face="Arial">How do you configure a client for automatic
backups?</font>
<br><font size=2 face="Arial">What's the difference between diff incr and
cumulative incr? What happens when I mix them on Windows client... Unix
client?</font>
<br><font size=2 face="Arial">How is a changed file determined on Windows and
what happens afterwards for each type of backup? How is a changed file
determined on Unix?</font>
<br><font size=2 face="Arial">When would I, or would I not, use cross mount
points?</font>
<br><font size=2 face="Arial">What is the difference between a Volume Group and
a Volume Pool?</font>
<br><font size=2 face="Arial">How do you back up the catalog? Why is this
important? What do you have to do if you don't have a catalog
backup?</font>
<br><font size=2 face="Arial">How do you recover the catalog?</font>
<br><font size=2 face="Arial">How do you configure retention levels for a
backup?</font>
<br><font size=2 face="Arial">If I install the Admin client on an NT
workstation, what else has to be done for it to work... be an authorized
server?</font>
<br><font size=2 face="Arial">What is multiplexing? What is multiple data
streams? Are they the same? Can I have one without the other...
both... ? where are they configured?</font>
<br><font size=2 face="Arial">What determines the number of jobs a client can
run? What determines the number of jobs that will go to a single
drive?</font>
<br><font size=2 face="Arial">What is OTM? TIR?</font>
<br><font size=2 face="Arial">What format does NetBackup write the tape
in?</font>
<br><font size=2 face="Arial">How does NetBackup tie together with Media
Manager?</font>
<br><font size=2 face="Arial">How do I create a Storage Unit that will only be
used by one client?</font>
<br><font size=2 face="Arial">What is the difference between the expiration
date for a volume in NetBackup's media catalog and Media Manager's volume
database?</font>
<br><font size=2 face="Arial">What is the process in which NetBackup decides if
a tape is available and which one it will use? Will media servers share
tapes? Will retention levels be mixed on a tape? What happens if
the requested pool is out of tapes?</font>
<br><font size=2 face="Arial">What is the difference between a frozen volume
and a suspended volume?</font>
<br><font size=2 face="Arial">How many Robot Control Hosts can a DLT tape
library have?</font>
<br><font size=2 face="Arial">What does the bpbkar process do? bpsched?
bpbrm? bpdbm? ltid? What process controls a DLT tape
library... a DLT tape drive? What is the AVRD process?</font>
<br>
<br>
<br><font size=2 face="Arial">- Scott</font>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td>
<td><font size=1 face="sans-serif"><b>"Goldfarb, Josh"
<Josh.Goldfarb AT blackrock DOT com></b></font>
<br><font size=1 face="sans-serif">Sent by: veritas-bu-admin AT
mailman.eng.auburn DOT edu</font>
<p><font size=1 face="sans-serif">03/26/2004 11:56 AM</font>
<br>
<td><font size=1 face="Arial"> </font>
<br><font size=1 face="sans-serif"> To:
<veritas-bu AT mailman.eng.auburn DOT edu></font>
<br><font size=1 face="sans-serif"> cc:
<david.chapa AT adic DOT com></font>
<br><font size=1 face="sans-serif"> Subject:
[Veritas-bu] Questions to ask a Netbackup Admin on an
interview *interesting*</font></table>
<br>
<br>
<br><font size=2 face="Arial"><b><i>Please tell me if you think these questions
are suitable and if you have any additions, please let me
know.</i></b></font><font size=3 face="Times New Roman"> </font>
<p><font size=3 face="Times New Roman">Basic: <br>
Why is the catalog the most important component of Netbackup? <br>
What does status 59 mean in the activity monitor? <br>
If you have an exchange database backup with a status 1 in the activity monitor
what would you do? <br>
On a windows box if you encountered a status 11, what is the problem? <br>
Why is a binary catalog more efficient than an ASCII catalog? <br>
-------- <br>
Intermediate: <br>
What is BPRD? <br>
If you have a SCSI attached robot and in device monitor you see the drives
marked as AVR, what does that mean and how would you fix it?</font>
<p><font size=3 face="Times New Roman">If I asked you to tell me if a client
has Netbackup on it just by using a telnet command what would you do? <br>
If you wanted to know what IP address netbackup was using to perform backups
what command would you run and where would you run it?</font>
<p><font size=3 face="Times New Roman">If an exchange server has four storage
groups, how would you set it up so that all four databases get sent to a
different tape drive at the same time?</font>
<p><font size=3 face="Times New Roman">If you have an Exchange database on box
ab1 and you want to set NBU to backup both the database and "C:\, F:\,
System_state" how would you set up the policy and or polcies to do this
while using the same volume pool?</font>
<p><font size=3 face="Times New Roman">If a media ID A04567 comes back and it
is frozen, what are the steps to unfreeze it and move it back to scratch from
the command line?</font>
<p><font size=3 face="Times New Roman">---------- <br>
Expert: <br>
If you wanted to bypass netbackup commands and move a tape from slot 1 to drive
3 how would you do that? <br>
What does this command do? Vmcheckxxx -rt tld -rn 0 brnyc-eb01 -vmhost
brnyc-eb01 -list? <br>
If your last catalog backup was two days ago and the master server crashed what
would you have to do to bring your environment back up to present time?</font>
<p><font size=3 face="Times New Roman">How do you find a disk based image via
the command line and then delete it? </font><font size=3 color=red face="Times
New Roman"><br>
>From the expert himself - Dave Chapa</font><font size=3 face="Times New
>Roman"> </font><font size=3 color=red face="Times New Roman"><br>
-----------------------------</font><font size=3 face="Times New Roman">
</font><font size=2 color=#000080 face="Arial"><br>
How do you import an NBU image that has been written to a disk storage
unit?</font><font size=3 face="Times New Roman"> </font><font size=2
color=#000080 face="Arial"><br>
What are the critical catalogs or databases on a Media Server?</font><font
size=3 face="Times New Roman"> </font><font size=2 color=#000080
face="Arial"><br>
How would you tune NetBackup to increase backup performance?</font><font size=3
face="Times New Roman"> </font>
<p><font size=3 face="Times New Roman"><br>
<br>
<br>
<br>
</font>
<p><font size=2 face="Times New Roman"><i>Josh Goldfarb</i></font><font size=3
face="Times New Roman"> </font><font size=2 face="Times New Roman"><i><br>
BlackRock Financial Management Inc.</i></font><font size=3 face="Times New
Roman"> </font><font size=2 face="Times New Roman"><i><br>
BlackRock Solutions - Technology USA</i></font><font size=3 face="Times New
Roman"> </font><font size=2 face="Times New Roman"><i><br>
40 East 52nd Street</i></font><font size=3 face="Times New Roman"> </font><font
size=2 face="Times New Roman"><i><br>
NY, NY 10022</i></font><font size=3 face="Times New Roman"> </font><font size=2
face="Times New Roman"><i><br>
Phone: 212.409.3702</i></font><font size=3 face="Times New Roman"> </font>
<p>
<p>
<p>
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