nope, mark is right.  ITC is considered part of vault, while it can 
be used outside of vault.

for more ITC information, check out chapter 6 of the 4.5 Vault SAG:

<http://seer.support.veritas.com/docs/246838.htm>

as well as the NBU 4.5 SAG:

<http://seer.support.veritas.com/docs/246847.htm>


At 8:49 AM -0700 7/9/02, White, Steve wrote:
Are you sure about that?  I thought the base product could do a 
maximum of two inline copies, each restricted to the same retention 
whereas the Vault option provided the ability to do more than two 
copies, and each one to have a different retention.

I may be recalling this incorrectly.

Steve

-----Original Message-----
From: Donaldson, Mark [mailto:Mark.Donaldson AT experianems DOT com]
Sent: Tuesday, July 09, 2002 7:44 AM
To: 'Fabbro, Andrew P'; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] NB 4.5 and Inline Copies?

Just a quick note that a big disappointment to me is that in-line 
copy is part of the separately licensed Vault option.  Unfortunately, 
my company is not willing to buy the whole product to get this one 
feature.

-M

-----Original Message-----
From: Fabbro, Andrew P [mailto:Fabbro.Andrew AT cnf DOT com]
Sent: Monday, July 08, 2002 11:28 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] NB 4.5 and Inline Copies?

My understanding from NB notes I've read is that 4.5 supports in-line 
backup copies.  e.g., you backup a client and write the backup to two 
tapes at the same time.  The NB release notes say you can do up to 9 
copies at the same time.

Putting additional drives needed, etc. aside for a moment, it seems 
like it could be a good way to make offsite/disaster recovery backups 
without the hassle of either duplicating tapes (which doesn't scale 
well) or running another full backup
for offsite/DR purposes.  I assume one could use Pool A for one copy 
and Pool B for another and send Pool B offsite.

Some questions:

- Has anyone used inline copying?  How well does it work?

- In NB 3.4.x, to use a duplicate of a tape, you need to flip it to 
the primary copy.  It's easy enough to script - does NB 4.5 work the 
same way?

- What about shared memory usage?  The calculation for NB 3.4 is 
number of data buffers x size of data buffers x number of drives x 
MPX per drive.  For a box driving DLT (64512 data buffer size 
recommended, maybe 64 data buffers), it's not a major factor - 
usually not over 128Mb (say, 8 drives at 4 MPX each).  With more 
recent technologies, you want fatter buffers, more buffers, and more 
MPX - easily 512Mb of shared memory, maybe more.  But I can't imagine 
all of that is just to drive the tape - some of it is network 
buffering, right?  So if I need X kilobytes of shared memory for a 
tape drive, do I need X times 2 for two drives doing the same backup 
in an in-line backup?  Or is it more like X times 1.5  (or whatever)?

Thanks,


-drew
  <mailto:fabbro.andrew AT cnf DOT com>fabbro.andrew AT cnf DOT com



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