Subject: Re: FLASHCOPY performance to a DS6800 DASD
industrynews@winwholesale.com
Date: Wed Jul 16 2008 - 10:23:25 EDT
owner-vse-l@Lehigh.EDU wrote on 07/16/2008 09:59:44 AM:
> I just did the z/VM command FLASHCOPY on a 3390-mod 9 on DS6800
> to another 3390-mod 9 volume on the DS6800.
>
> FLASHCOPY 8A2 0 END TO 8A1 0 END SYNCHRONOUS
>
> The command responded instantaneously.
It only has to create an index table of the tracks to be copied.
Once that is done, the command responds and then kicks off the actually
copy process which operates on the index table. If a track is to be
modified which hasn't yet been copied, then that track is immediately
copied so that update processing can continue normally.
Sincerely,
Dave Clark
WinWholesale Group Services
3110 Kettering Boulevard
Dayton, Ohio 45439 USA
(937) 294-5331
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