SE means "space-efficient."  See 
http://publib.boulder.ibm.com/infocenter/dsichelp/ds8000ic/index.jsp?topic=/com.ibm.storage.ssic.help.doc/f2c_spc_effnc_3icy8z.html,
 inter alia.


Bill Fairchild

Software Developer 
Rocket Software
275 Grove Street * Newton, MA 02466-2272 * USA
Tel: +1.617.614.4503 * Mobile: +1.508.341.1715
Email: [email protected] 
Web: www.rocketsoftware.com


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Hal Merritt
Sent: Wednesday, December 02, 2009 8:38 AM
To: [email protected]
Subject: Re: DS8700 Feature FlashCopy SE

Not sure what the 'SE' is, but we use Flashcopy on both of our DS8100's. It is 
a little cumbersome, but it seems to work pretty well to take a PIT copy of any 
number of volumes in that unit. 

Flashcopy can be a key component of a pretty slick DR strategy with XRC and 
GDPS. There is a Redbook or two that talk to those strategies. 

We also use Flashcopy as a key tool in taking DB2 backups.  

A drawback is that it is just a PIT (point in time) physical copy of a volume. 
You may have issues with logical consistency because it takes a short time to 
get all of a set of logically related volumes flashed. (I think that some 
models support 'logical groups' where a whole group of volumes is snapped via a 
single command). 

Another potential issue is that even though the copy is logically instant, it 
does take some time for the physical copy to complete, and that process uses 
bandwidth in the unit.   

HTH and good luck. 
 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
David A. Diatto
Sent: Tuesday, December 01, 2009 6:19 PM
To: [email protected]
Subject: DS8700 Feature FlashCopy SE

While reviewing the features of the DS8700, our IBM business partner stated 
the feature, FlashCopy SE, is not widely used on z/OS.  Is any using this 
feature on z/OS and can anyone share any experiences with the feature. Your 
responses will be greatly appreciated.
Thanks,
Dave

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