RE: Strange DASD Utilization Issue

Rob beat tme to this reply, so let me second it.

I'd be willing to bet that your 520 will let you add disks without
bringing the system down.

Charles Wilt
--
iSeries Systems Administrator / Developer
Mitsubishi Electric Automotive America
ph: 513-573-4343
fax: 513-398-1121
  

> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx 
> [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
> Sent: Tuesday, February 28, 2006 1:07 PM
> To: Midrange Systems Technical Discussion
> Subject: RE: Strange DASD Utilization Issue
> 
> Debbie,
> 
> Just yesterday I put in a disk drive without bringing the 
> system down. 
> It's really no big deal.  I've even removed and added cards.  
> There are 
> some options in STRSST to do this.
> 
> Rob Berendt
> -- 
> Group Dekko Services, LLC
> Dept 01.073
> PO Box 2000
> Dock 108
> 6928N 400E
> Kendallville, IN 46755
> http://www.dekko.com
> 
> 
> 
> 
> 
> "DebbieKelemen" <DebbieKelemen@xxxxxxxxxxx> 
> Sent by: midrange-l-bounces+rob=dekko.com@xxxxxxxxxxxx
> 02/28/2006 12:28 PM
> Please respond to
> Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
> 
> 
> To
> "'Midrange Systems Technical Discussion'" <midrange-l@xxxxxxxxxxxx>
> cc
> 
> Fax to
> 
> Subject
> RE: Strange DASD Utilization Issue
> 
> 
> 
> 
> 
> 
> I guess I should have set the stage better with giving more 
> background on
> our system.  We just purchased it last year. 
> 
> We have an i5 model 520. With 351.6 g of usable DASD and 4g 
> of memory.  We
> only have about 100 users (if that).  We do have a website directly
> accessing us 24X7.  So I can't take the machine down too 
> often.  I have 12
> disk drives currently & will be adding 4 more in a few weeks 
> (when I can
> schedule the down time). 
> 
> We do have some power users.  And the web developer does have some SQL
> queries that I need to review because he is doing queries over the 
> database
> on the physical files or in ways that would be faster if we made new
> logicals for him to use.  I never realized that that would eat up temp
> space.
> 
> Deb
> 
> 
>  
> 
> -----Original Message-----
> From: midrange-l-bounces+debbiekelemen=hotmail.com@xxxxxxxxxxxx
> [mailto:midrange-l-bounces+debbiekelemen=hotmail.com@xxxxxxxxxxxx] On 
> Behalf
> Of Chris Bipes
> Sent: Monday, February 27, 2006 4:17 PM
> To: Midrange Systems Technical Discussion
> Subject: RE: Strange DASD Utilization Issue
> 
> Stop people from querying your database on non keyed fields.  
> Temporary
> access path, temporary copies of partial data are the two biggest uses
> of temporary space.  You will see a max and a current 
> temporary space in
> wrksyssts.  How much DASD do you have?  Large % jumps generally happen
> on low space machines.  If you have something like 4x17GB 
> drives raid 5,
> that is around 50 GB usable and 5% is only 2.5GB.  Where as a larger
> DASD pool such as our 637 GB usable, 5% = 31.8 GB not so easy for temp
> storage to use. 
> 
> 
> Christopher Bipes
> Information Services Director
> CrossCheck, Inc.
> 
> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of DebbieKelemen
> Sent: Monday, February 27, 2006 2:58 PM
> To: 'Midrange Systems Technical Discussion'
> Subject: Strange DASD Utilization Issue
> 
> I need some help trying to figure out a DASD utilization issue that is
> plaguing me.
> 
> After an IPL, my system is at a nice 38.64% utilization.  Within a day
> it
> has grown to 42.98%.  I can guarantee within a few weeks I 
> will be up to
> 50
> or more percent and I will need to IPL to get my DASD down for the mid
> 60%
> within a 6 week period or so.
> 
> When I run a GO DISKTASK, it shows that Temporary space is 5% of my
> system.
> That is what my system grew by.  How do I keep my temporary 
> space under
> control? 
> 
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