[Veritas-bu] Re: Move backups off Data Domain to tape at specific intervals

2007-05-05 Thread cpreston

Vault is definitely the way to go, but bpduplicate can be used at no extra 
charge.  Anything more than basic usage, though, and you'll find yourself 
wanting vault.

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[Veritas-bu] Re: Infrant ReadyNAS

2007-09-13 Thread cpreston

What do you mean the trick didn't work?  You can certainly backup a CIFS share 
via NetBackup.  You just have to specify the UNC pathname to it.  (You may have 
check a box in the policy to allow backing up network drives.)

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[Veritas-bu] Tapeless backup environments?

2007-10-14 Thread cpreston

As promised, I looked into applying the Birthday Paradox logic to 
de-duplication.  I blogged about my results here:

http://www.backupcentral.com/content/view/145/47/

Long and short of it: If you've got less than 95 Exabytes of data, I think 
you'll be OK.

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[Veritas-bu] adding new media server to existing environment

2007-11-12 Thread cpreston

We just discussed this on the list yesterday.  See the thread here:

http://tinyurl.com/2y4jxv

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[Veritas-bu] sniff...bpgp is gone from 6.5

2008-01-22 Thread cpreston

I'm looking into whether or not this is true.  If it is, it's time for an email 
campaign. 

Some see it as a security hole, and I think that's ridiculous.  Anybody who is 
root/Administrator on a NetBackup master can push any file to any client any 
time they want via a backup/restore command.  Removing bpgp only makes it take 
a few minutes instead of a few seconds.

Other complaints about it over the years have been that it doesn't check for 
like/like. You can overwrite a directory with a file if you tell it to.  For 
example, the following command would be VERY BAD!

WRONGWAY# bpgp to client /etc/hosts /etc #DON'T DO THIS

While this would be perfectly valid syntax with copy, cp, rcp, mv, etc, it is 
NOT proper syntax with bpgp.  The command above would overwrite the /etc 
DIRECTORY with /etc/hosts, which, of course, would not be good for your client. 
 (Some have even overwritten their root mount point.)  Perhaps they got too 
many calls from people that did just that.

Of course, about five lines of code could have fixed that problem.  It doesn't 
allow you to copy a directory, but it doesn't check if what you're copying to 
is a directory. A simple check that the target file is or is not a directory 
would have sufficed.  If it was a directory, it could just exit with error.  
But they chose instead to just pretend the command didn't exist.  It's not 
documented; there's not even a Usage statement in the command itself, even if 
you do strings.  If you call support and complain they tell you it's not 
supported.

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[Veritas-bu] tape speed megabits or megabytes

2008-03-20 Thread cpreston

Megabytes/second, or MB/s.  Mb/s would be megabits.  But tapes are in MB/s.

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[Veritas-bu] how to copy backups from data domaintotapew/netbackup 6.5

2009-03-09 Thread cpreston


Wilkinson, Alex wrote:
 
 What is an OST interface ?
 


The OpenSTorage interface, a new way to use your Data Domain boxes (and other 
boxes that support it) with NetBackup.  It's not NFS or CIFS, it is its own 
transport.  It is also not VTL.  Think of it as a more intelligent DSU. 

In the case of DD  Quantum, the data is sent over IP.  With Falconstor, the 
data is sent over Fibre Channel.

With DD boxes (which is what started this conversation), the first improvement 
you'll get simply by switching from NFS/CIFS to OST is a significant increase 
in performance.   With all systems that support OST, you also get what NBU 
calls optimized deduplication, where NBU tells one OST device to copy a given 
backup to another OST device.  The OST device (in this case, the DD box) will 
use dedupe and replication to get the data there.  Once there, it informs NBU.  
Now NBU knows about both copies, just as if it had duplicated it via 
bpduplicate.  Nice, huh?

The nice thing that OST is supposed to support is tape-out functionality, where 
an OST device can copy it's backup to tapes and tell NBU which tapes got which 
backups.  Again, just as if it NBU did the copy.

Here's my blog post about OST:
http://www.backupcentral.com/content/view/198/47/

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[Veritas-bu] Can any one help in generating the failing job in Netbackup.

2009-04-05 Thread cpreston


chinni krishna wrote:
 I am trying to generate an failing event in netbackup environment.
 Please any one explain me how can create a failing job in Netbackup.


I do a number of things to generate failed backups (when I'm testing reporting 
products, for instance).  In NBU, I do things like this:

1. Create a Disk STU, then delete its directory
2. Delete all the free tapes in a tape library and mark the partial ones full 
(to create 96s)
3. Create funky host file entries so the hostnames of clients/servers resolve 
incorrectly, causing a failed backup
4. From the command line, you can also manually run policies and schedules that 
don't exist.

Hope that helps.

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[Veritas-bu] Netbackup 6.5 DSSU fragmentation

2009-05-06 Thread cpreston


owiking wrote:
 Im having problems with my diskstage getting to fragmented and thus getting 
 very slow performance when duplicating to tape. Running defrag isnt an option 
 since the files are reaplced fequently and the defrag job will take to long 
 time to run.  From what Ive seen and read, this is a major problem for alot 
 os users of Netbackup.thanks


This IS a common problem that people have, and is one of the reasons that some 
people prefer VTLs.  VTLs have a specialized file/storage system that is 
designed to handle the types of I/O that backups create.  Regular filesystems 
are designed to support random I/O, where backups are very sequential I/O.

The only thing you can do to minimize fragmentation in your setup is to 
completely fill and completely empty the system every night.  When the 
diskstaging cache is completely emptied, then backups written from that point 
on will not be fragmented.

However, if you are going to completely empty your cache, do so just before 
your backup so that last night's backup is around as long as possible for 
restores.

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[Veritas-bu] PLEASE READ BEFORE POSTING

2009-06-02 Thread cpreston

Before posting to this forum, you need to understand that it is also connected 
to a mailing list that existed before the forum, and that we must respect that 
community's wishes.  EVERY forum post that you make is immediately sent to that 
mailing list as an email.  Messages that include no context may make sense on a 
threaded forum, but make no sense to an email user that can't easily see the 
previous message to which you are replying.

Therefore, when replying to another post (including your own), YOU MUST INCLUDE 
the relevant parts of the post to which you are replying in quotes.  That way, 
when someone is following on the mailing list, they won't get an email that 
says Here's what you can do about that? without having any idea what that 
is.

The easiest way to do this is to use your mouse to select the appropriate 
amount of text needed for context, then right click and select Copy.  Paste 
that message into your forum post as the first paragraph or two.  THEN SELECT 
THE PASTED TEXT AGAIN and click the Quote button just below the title of your 
post.  That will place the Quote and End Quote codes around your text, 
causing it to show up as a quote in the forum post and in the email to the 
mailing list.

Your assistance in this is greatly appreciated.

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[Veritas-bu] Synthetic Backups

2009-07-07 Thread cpreston


 I've been testing it myself. I think you do need to keep that full backup 
 around. The synthetic part of a synthetic backup is the consolidation of 
 the full backup and the incrementals into a single image. This is done via 
 duplication. 


What makes it synthetic is that it is created tape to tape instead of 
transferring a bunch of non-changed data from the client again.  Once that new 
(synthetic) full is created, there is no need for previous fulls (other than 
for retention).  The new full DOES NOT rely on the old full once it's created.

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[Veritas-bu] bpdbjobs -all_columns

2009-09-01 Thread cpreston


 Yes, well, the forum software replaced all the at signs in my script with 
 less-than-space-a-t-space-greater-than...


Sorry about that.  It's the obfuscate email addresses feature that others 
requested.  I'll manually edit it and fix that.

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[Veritas-bu] More Netbackup and VCB questions

2009-09-16 Thread cpreston


  For a particular guest, there is a 1TB VMDK, but there is currently only 
 about 100GB of data on the VMDK. We see it get through the 100GB in record 
 time, but then it just keeps going until it gets through the whole disk.
 
 Is this normal?


I believe this is the way that FlashBackup works.  It's a raw backup, so it's 
going to look at the whole disk each time, even if it only backs up part of it. 
 The incremental backups in NBU are done file-level, so this should only happen 
with the full.

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[Veritas-bu] Type de stockage pour donn�es d�dupliqu�es

2010-04-06 Thread cpreston

For those interested, the google english translation of the previous post is:

Hello everyone,
I just read the C version (April 1) on deduplication NetBackup 7.0.
It is mentioned that only the DAS or FC is supported (not CIFS, NFS and iSCSI 
bizare).
Someone has experience on the subject?
I do not really see why the iSCSI protocol does not work.
Thank you in advance for your answers.
Regards.

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[Veritas-bu] Can't get nbu to use drives, and cant 'up' the drives.

2010-07-15 Thread cpreston

Interesting - I see this response but not what it is responding too. 
Did something not make to the mailing list from BackupCentral? 

It's a side effect of my human SPAM filter.  The first post had to be approved 
and the second post didn't. ;)

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[Veritas-bu] symantec netbackup 7.0 books

2010-10-28 Thread cpreston
quotehi. i am a new baby to netbackup please anyone suggest me some books to 
gain complete knowledge on netbackup and to get certified also, please don't 
tell me that symantec books vol1,vol2 are good, i don't like them./quote

Unfortunately the only books on NetBackup are the books you just said you don't 
like.

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[Veritas-bu] Netbackup 7 compression

2010-11-29 Thread cpreston
Standard compression ratio rules apply.  Your mileage may vary, but it's 
typically going to be 1.5:1 to 2:1 or so.

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[Veritas-bu] Tech Field Day Live Stream from Symantec Headquarters

2011-02-10 Thread cpreston
I am here at Symantec Headquarters for Tech Field Day, where Symantec Execs 
will be briefing (and be drilled by) 14 bloggers including myself and 13 
others.  We're going to talk about a number of Symantec products.  You can see 
a live stream of this event here:

http://gestaltit.com/field-day/tfd5/

This is the first time they have broadcasted live from Symantec Headquarters.  
I hope some of you find it useful.

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