Re: Data Transfer

[CRPence <CRPbottle@xxxxxxxxx>]

  I do not have access to any system to formulate and verify the steps, 
but they have been discussed on this forum several times in the past.  I 
could only read those messages and the documentation, and hope to 
properly formulate a script without errors.  I will defer to links to 
those; some are included later in my reply.

  However the use of VrtTap is somewhat moot, if the test\timing of the 
FTP PUT is not verified to be significantly\sufficiently faster.?  For 
example... Even if the transfer time drops to 2hrs from 3hrs as ~1/6th 
of the presumed total work, then the 2hrs*6similar_files is still some 
12hrs of presumed transport-time, which is way beyond a 5hr maximum as 
the allowed transport-time.

  Regardless... Basically, the data to be transported [e.g. using FTP 
PUT] is the storage allocated *behind* the virtual tape.  That is the 
Image Catalog.  Here are some past messages [threads] and doc links that 
may be of interest to get the necessary steps:

http://pic.dhe.ibm.com/infocenter/iseries/v7r1m0/topic/rzam4/rzam4virtualtapeusevt.htm
IBM i 7.1 Information Center -> Storage solutions -> Virtual storage -> 
IBM i virtual tape
_i Setting up virtual tape storage i_
"Follow these steps to set up your virtual tape storage.
 ...
Parent topic: _IBM i virtual tape_
http://pic.dhe.ibm.com/infocenter/iseries/v7r1m0/topic/rzam4/rzam4virtualtape.htm
 ..."

Subject: DUPTAP from physical media to virtual tape.
http://archive.midrange.com/midrange-l/201202/msg00721.html
" _i Virtual tape media i_
http://publib.boulder.ibm.com/infocenter/iseries/v7r1m0/topic/rzaiu/rzaiuvirtualtape.htm
"
http://archive.midrange.com/midrange-l/201202/msg00722.html
http://archive.midrange.com/midrange-l/201202/msg00724.html
" ... Subject: Re: physical / virtual tape backup file at a time
 ... http://archive.midrange.com/midrange-l/200703/msg00561.html
"

Subject: Tape/Library Question
http://archive.midrange.com/midrange-l/201109/threads.html#00162
http://archive.midrange.com/midrange-l/201109/msg00383.html
http://archive.midrange.com/midrange-l/201109/msg00391.html
http://archive.midrange.com/midrange-l/201109/msg00393.html
http://archive.midrange.com/midrange-l/201109/msg00392.html

Subject: Re: Save multiple libraries to a savfile then restore
http://archive.midrange.com/midrange-l/201110/msg00587.html
" <refers mostly to above links and doc links> "

Regards, Chuck

On 06 Sep 2013 10:50, Don Wereschuk wrote:
> <<SNIP>> I only need data files (PF & LF) from 1 library and creating
> the SAVF is easy and doesn't take a great amount of time. How is this
> different from the Virtual Tape file and how do I go about creating
> this? Once the Virtual Tape file is created, how do I transfer to the
> other box? Using FTP, I use the PUT command. Are you referring to
> something else? <<SNIP>>
>
> CRPence on Friday, September 06, 2013 1:30 PM wrote:
>
> > <<SNIP> I would suggest testing\timing a transfer of the 16GB
> > save file data again, but PUT the file data into a stream file.
> > The timing of that request would give a better idea of how much
> > faster the transfer of the same saved data could be effected using
> > virtual tape images than when using a save-file; i.e. the
> > difference should imply the overhead of writing save file records
> > vs writing non-record\binary stream data.