I believe IBM's use of MTTR for the address of a record on disk goes back to
OS360 and HASP.  Not exactly new.

""Ted MacNEIL"" <[EMAIL PROTECTED]> wrote in message
news:<[EMAIL PROTECTED]
0.bisx.prod.on.blackberry>...
> >JES2 SPOOL addressing uses 4 byte MTTR where
> >M is SPOOL extent number
> >TT is track address (up to 64K)
> >R is record number
> 
> Why does IBM always do that?
> Why do they continue to confuse us by appropriating other anacronyms 
> and re-using them?
> 
> I remember when an electonics engineer was in an IMS course with me 
> (circa 1981), and he was continually getting confused about PCB.
> 
> Programme Control Block
> Printed Circuit Board
> 
> And, they have done it over and over again.
> 
> The term they 'steal' is usually a well-established and understood 
> term in another discipline.
> 
> 
> -
> Too busy driving to stop for gas!
> 
> -----Original Message-----
> From:         Ted MacNEIL <[EMAIL PROTECTED]>
> Date:         Sat, 3 Mar 2007 13:47:23 
> To:[email protected]
> Subject: Re: JES2 MTTR
> 
> >Unfortunately Ted didn't take sufficient account of the qualification 
> >in your Subject line.
> 
> I know of no other meaning for MTTR.
> I have been involved in availability and other service levels for 26 
> years.
> 
> If there is another meaning, please enlighten me.
> 
> I did state that my version of MTTR did apply to more than just JES2 
> (or even just IT).
> 
> Mean Time To Recover.
> -
> Too busy driving to stop for gas!
> 
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