Re: CHGPF time

Rob,

I seem to remember that you had some questions (don't know if they
were answered) about the way data was moved from/to the SSDs. Found a
nice IBM presentation about SSDs here:

http://tinyurl.com/yg64yxz

Regards,

Luis Rodriguez
IBM Certified Systems Expert — eServer i5 iSeries



On Mon, Jan 18, 2010 at 9:19 AM, <rob@xxxxxxxxx> wrote:

Again, the help will not be updated on 6.1, but will in 7.1.  If you run
that on a file you will see that the unit will now be set to 255.  In
fact, with the appropriate ptf's on 5.4.5 you run CHGPF UNIT(255) because
they didn't even change the command to support *SSD.

Remember, IBM finds it much easier to make programming changes, but
promoting out help and what not to the myriad number of languages they
support lags behind.  Hence command changes and whatnot are often snuck
out in PTF's.  Help takes a new release.

I've decompiled the command at 6.1.1.  Notice how they change *SSD into
255 before passing it on to the CPP?
PARM       KWD(UNIT) +
          TYPE(*INT2) +
          DFT(*SAME) +
          RANGE( +
            1 +
            255) +
          SPCVAL( +
            (*SAME -2) +
            (*ANY 0) +
            (*SSD 255)) +
          EXPR(*YES) +
          PROMPT('Preferred storage unit' 20)


Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com





From:   Andy Youens <andy@xxxxxxxxxxxxxx>
To:     Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date:   01/18/2010 07:26 AM
Subject:        RE:  CHGPF time
Sent by:        midrange-l-bounces@xxxxxxxxxxxx



I get 'no longer supported' under 6.1 for that Rob

This parameter is no longer supported.  It exists solely
for compatibility with releases earlier than Version 3
Release 6 Modification 0 of OS/400. For information on
using auxiliary storage pools (ASPs), refer to the
Recovering your system book, SC41-5304.

Regards
Andy Youens | Senior IBM Consultant | formaserve systems ltd
( 01908 609500 | 2 07770 380276 | http://www.formaserve.com
________________________________________
From: rob@xxxxxxxxx [rob@xxxxxxxxx]
Sent: 14 January 2010 13:48
To: Midrange Systems Technical Discussion
Subject: SSD:  CHGPF time

When you execute
CHGPF FILE(SCHEMA/TABLE) UNIT(*SSD)
does it just flip a bit in the definition of the table and do the actual
move in the background or are you locked out of the table until all
sectors are moved?


Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

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