Are you sure that the FLASHCOPY feature doing a point in time copy does not 
need enough space available to make a full copy?  That has been the number 1 
knock against the FlashCopy function.  I realize that it will not make a full 
copy unless it had to.  But I thought that there had to be enough physical 
space available and pre allocated to make that copy.  
Matt 

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Daniel Sparrman
Sent: Wednesday, September 15, 2004 4:55 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: DS4500 and TSM?

Hi

Yes, it would be possible, given the following conditions:

1. The end system has to be running AIX so that your TSM server can mount the 
volume in question 2. The TSM server has to be within the same storage 
partition in your FAStT subsystem so that the TSM server can get access to the 
snapshot volume.

Though it's possible, it's going the hard way. It would be alot easier to 
utilize LAN-free capabilities, as automating this procedure would take alot of 
scripting, and lots of engineering on your FAStT.

FlashCopy = Immediate copy. Not copying the whole volume at once, but only 
creating a second table of contents of an existing volume. This also means that 
the new flashcopy volume has ties to the original volume.
VolumeCopy = Replicating two different logical volumes. Replicate information 
stored in one logical volume onto another logical volume. The two logical 
volumes doesnt have any ties to eachother.

>From the IBM website:

"VolumeCopy option provides full logical drive replication within the FAStT700 
with enhanced data management and protection."

"FlashCopy feature creates a point-in-time (PiT) image of a volume?the 
equivalent of a complete physical copy but created much more quickly and 
requiring less disk space. FlashCopy volumes are host-addressable and function 
as normal volumes with complete read and write access. The FlashCopy feature 
uses an innovative copy-on-write technology to maintain the logical FlashCopy 
volume while reducing disk utilization. A repository volume stores only the 
data blocks that have changed since the time of the last use of the FlashCopy 
feature."

Best Regards

Daniel Sparrman
-----------------------------------
Daniel Sparrman
Exist i Stockholm AB
Propellervägen 6B
183 62 TÄBY
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51



Mike <mikee AT MIKEE.ATH DOT CX>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
2004-09-13 17:07
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Subject
DS4500 and TSM?






Given the DS4500 has FlashCopy and VolumeCopy (what's this?), is there
someway such that the TSM server (on AIX) can attach to the area that
contains a FlashCopy backup to push that area directly to disk without
involving the end server (possibly Windows/Exchange)?

Does that make sense? :)

Mike