RE: AS/400 UPGRADE

["Richard Jackson" <richardjackson@xxxxxxxxxxxxxxxxxx>]

The first two units on your system comprise a mirrored pair.

The other 10 units are RAID-5 protected.  The parity data is stored on 8
disk arms.  The arms containing parity data are the ones whose size are
3670.  The maximum number of arms in a single RAID set is 10, this RAID set
is full.  A system this old might have an IOP that is incapable of
supporting more than one RAID set.  The minimum drives in a new RAID set is
four.  I hope that you have considered that.

Considering the percent-used on the disk, after you add new disk units, you
should use DSKBAL to re-spread your objects.  Otherwise, you may experience
a performance issue.

If you add DASD to this IOP, the IOP may become overloaded and you may
experience a performance issue when the system is under high stress.  This
is a complex issue, not easily described in one or two sentences.

Adding memory to this system could reduce page faulting and smooth out the
effect of the overloaded disk IOP.

Richard Jackson
mailto:richardjackson@richardjackson.net
www.richardjacksonltd.com
Voice: 1 (303) 808-8058
Fax:   1 (303) 663-4325

-----Original Message-----
From: owner-midrange-l@midrange.com
[mailto:owner-midrange-l@midrange.com]On Behalf Of oludare
Sent: Monday, July 17, 2000 10:40 AM
To: MIDRANGE-L@midrange.com
Subject: Re: AS/400 UPGRADE


Guys, I am on a 510-2143 system and currently about 42Gig (see below), this
is only a DASD, MEMORY and OS400 upgrade.  I think I have RAID dasd system
from your discussions.  I have included DISK configuration below for
clarity.  Thanks all for your input.


                     Display Disk Configuration Protection
             Serial                  Resource
 ASP  Unit   Number      Type Model  Name        Protection
   1
Mirrored
         1   00-0BB9617  6607  030   DD001       Controller
         1   00-0BD2365  6607  030   DD002       Controller
         3   00-0F33908  6607  070   DD012       Device Parity
         4   00-0F43768  6607  072   DD011       Device Parity
         5   00-0BB8603  6607  072   DD010       Device Parity
         6   00-0BC1727  6607  072   DD009       Device Parity
         7   00-0BC2962  6607  072   DD008       Device Parity
         8   00-0F37094  6607  072   DD007       Device Parity
         9   00-0BB7222  6607  070   DD006       Device Parity
        10   00-0F43363  6607  072   DD005       Device Parity
        11   00-0BB9159  6607  072   DD004       Device Parity
        12   00-0F43632  6607  072   DD003       Device Parity



                     Display Disk Configuration Capacity
                                              ----Protected--- ---Unprotecte
d--
 ASP  Unit   Type Model  Threshold  Overflow       Size  %Used      Size
%Used
   1                                                 90%    No
41943 94.57%         0  0.00%
         1   6607  030
4194 94.51%         0  0.00%
         1   6607  030
4194 94.51%         0  0.00%
         3   6607  070
4194 94.61%         0  0.00%
         4   6607  072
3670 94.88%         0  0.00%
         5   6607  072
3670 94.52%         0  0.00%
         6   6607  072
3670 94.78%         0  0.00%
         7   6607  072
3670 94.43%         0  0.00%
         8   6607  072
3670 94.60%         0  0.00%
         9   6607  070
4194 94.45%         0  0.00%
        10   6607  072
3670 94.54%         0  0.00%
        11   6607  072
3670 94.44%         0  0.00%
        12   6607  072
3670 94.50%         0  0.00%






----- Original Message -----
From: "Chris Bipes" <chris.bipes@cross-check.com>
To: <MIDRANGE-L@midrange.com>
Sent: Monday, July 17, 2000 10:33 AM
Subject: RE: AS/400 UPGRADE


> For the hardware compatibility.  The older software may not handle the new
> memory or dasd.  But again it may.  You your self warn about the
> pre-requisites.  You do have a valid point about spreading the OS across
the
> new drives, but then there is the new disk balancing that is available
with
> V4R3 and even better in V4R4.  The V4R4 version is even better than the
> spread when loading the tapes.  Also, they are only upgrading the OS so
the
> data will not be touched and not spread across the new drives.
>
>
>
> Christopher K. Bipes mailto:ChrisB@Cross-Check.com
> Sr. Programmer/Analyst mailto:Chris_Bipes@Yahoo.com
> CrossCheck, Inc. http://www.cross-check.com
> 6119 State Farm Drive Phone: 707 586-0551 x 1102
> Rohnert Park CA  94928   Fax: 707 586-1884
>
> If consistency is the hobgoblin of little minds, only geniuses work here.
> Karen Herbelin - Readers Digest 3/2000
>
>
> -----Original Message-----
> From: Allen, Stu [mailto:sallen@fellowes.com]
> Sent: Monday, July 17, 2000 3:32 AM
> To: 'MIDRANGE-L@midrange.com'
> Subject: RE: AS/400 UPGRADE
>
>
> Chris,
> Out of interest, why?
> Extra memory would make the software u/g quicker, and the extra disk would
> ensure that the LPP libraries would be spread over more disk arms...
>
> Dare, concentrate on the s/w upgrade.  As long as you meet pre-requisites,
> (which your hardware vendor should be able to confirm), disk, memory, and
no
> protection->raid are a piece of cake.
>
> Regards,
> Stuart
>
> Stuart Allen
> European Systems Analyst,  Fellowes
> mailto:sallen@fellowes.com
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