Re: CFW and DFSORT

2006-02-24 Thread Ron and Jenny Hawkins
> -Original Message- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of David Betten > Sent: Friday, 24 February 2006 11:22 PM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: CFW and DFSORT > > I apologize, my earlier append was not clear. DFSORT does c

Re: CFW and DFSORT

2006-02-24 Thread David Betten
; > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > > Behalf Of Bruce Black > > Sent: Friday, 24 February 2006 10:52 AM > > To: IBM-MAIN@BAMA.UA.EDU > > Subject: Re: CFW and DFSORT > > > > > > > > You're from IBM right? S

Re: CFW and DFSORT

2006-02-23 Thread Ron and Jenny Hawkins
n when the controller has CFW OFF. The IO chaining behaviour suggests otherwise. Ron > -Original Message- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of Bruce Black > Sent: Friday, 24 February 2006 10:52 AM > To: IBM-MAIN@BAMA.UA.EDU >

Re: CFW and DFSORT

2006-02-23 Thread Bruce Black
You're from IBM right? So you are saying that ESS and DS8K ignore CFW and put a copy in the NVS anyway? Then why does DFSORT change its IO chaining behaviour when CFW is on. No, he said that if you disable CFW in the control unit but enable it in DFSORT, the control unit ignores the CFW request

Re: CFW and DFSORT

2006-02-23 Thread Ron and Jenny Hawkins
M Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of David Betten > Sent: Friday, 24 February 2006 3:11 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: CFW and DFSORT > > You should not have a problem with DFSORT if you disable cache fast write > in your contoller. Even i

Re: CFW and DFSORT

2006-02-23 Thread David Betten
You should not have a problem with DFSORT if you disable cache fast write in your contoller. Even if the DFSORT default is CFW, the controller will simply ignore the CFW flag and treat it as a normal write. Generally, I have not seen a significant perfomrance impact to DFSORT when CFW is turned o

Re: CFW and DFSORT

2006-02-23 Thread Ron and Jenny Hawkins
n the same behaviour with Syncsort. Ron > -Original Message- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of John (IBM-MAIN) > Sent: Friday, 24 February 2006 12:59 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: CFW and DFSORT > > > Hi

Re: CFW and DFSORT

2006-02-23 Thread John (IBM-MAIN)
> Hi all > because of GDPS Hyperswap-Tests we want to disable Cache Fast Write. We > were wondering which jobs would be affected by this change and we found > out that DFSORT has an option CFW=Y, which is our default. > 1. how will DFSORT react if option CFW=Y is used and on the HW it is > disabled