Re: Virtual tape optimal image catalog entry size(s).

[Jim Oberholtzer <midrangel@xxxxxxxxxx>]

Rob,

If the tape image runs out of room, most likely it will create a new 
tape catalog entry 256 called GEN001.  It starts there and backs up 
until the save it complete.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 2/7/2012 2:56 PM, rob@xxxxxxxxx wrote:
> Well one thing I was wondering was, if I had the space set to 10GB and I
> save 22GB to it will it just grow to accommodate it?  I am guessing not.
> So that's why I ran CHGIMGCLGE IMGSIZ(25000) on both entries.  It didn't
> change the allocated size (yet).  Perhaps there's three sizes?
> These you see with option 8 of WRKLNK:
> 1 - Size of object data in bytes . . . . . :   12369
> 2 - Allocated size of object . . . . . . . :   8662810624
> And this you see with WRKIMGCLGE VRTCLG, option 2:
> 3 - Image size . . . . . . . . . . . IMGSIZ         25000
>
> I am guessing that 2 can increase up to 3.  And stays at the largest save
> size it has completed until you delete/rebuild it.
> I am also guessing that 1 increases up to the amount of data saved on that
> tape at this time.  It shrinks down on an INZTAP (fact).
> 1 is the size of the data actually sent in my ftp sessions.
>
>
>
> Rob Berendt
> -- Group Dekko Dept 1600 Mail to: 2505 Dekko Drive Garrett, IN 46738 
> Ship to: Dock 108 6928N 400E Kendallville, IN 46755 
> http://www.dekko.com From: bdietz400@xxxxxxxxx To: Midrange Systems 
> Technical Discussion <midrange-l@xxxxxxxxxxxx>, Date: 02/07/2012 03:33 
> PM Subject: Re: Re: Virtual tape optimal image catalog entry size(s). 
> Sent by: midrange-l-bounces@xxxxxxxxxxxx Rob, the way I read the 
> ADDIMGCLGE ADDIMGCLGE IMGCLG(TAPE) FROMFILE(*new) TOFILE(tap02) 
> ALCSTG(*MIN) Allocate storage size (ALCSTG) - Help Specifies for tape 
> image files, whether to allocate the entire amount of storage 
> specified on the Image size (IMGSIZ) parameter. *MIN Only allocate 
> storage required to initialize the tape image file at the time of the 
> create. *IMGSIZ Allocate the entire amount of storage specified on the 
> Image size (IMGSIZ) parameter. The test lib I saved to a vrttape had 
> about the size of the library itself. Am I close to what you were 
> wondering about? Bryan
> --