Re: Typical PC Guy question - and request for RFB contacts -- MIDRANGE-L

4 drives for sure to do RAID-5
If disk space is not an issue I would recommend
to go for a 4x 4GB config - a relative expensive RAID-
capable controller is also needed, then. (2740 or 2741)
If only MFIOP controlled (or was it the 2728 controller
in that type of model  170 ?), then you cannot switch to
RAID later on, if you just "add another drive"

HTH,  Philipp Rusch


Carl Galgano schrieb:

> I believe you need 4 drives to do RAID 5.
> cjg
>
> Carl J. Galgano
> EDI Consulting Services, Inc.
> 550 Kennesaw Avenue, Suite 800
> Marietta, GA  30060
> (770) 422-2995 - voice
> (419) 730-8212 - fax
> mailto:cgalgano@ediconsulting.com
> http://www.ediconsulting.com
> AS400 EDI, Networking, E-Commerce and Communications Consulting and
> Implementation
> http://www.icecreamovernight.com
> Premium Ice Cream Brands shipped Overnight
>
> "You ain't gonna learn what you don't want to know" - rw
>
> -----Original Message-----
> From: midrange-l-admin@midrange.com
> [mailto:midrange-l-admin@midrange.com] On Behalf Of Anthony Hardy
> Sent: Wednesday, December 04, 2002 5:06 PM
> To: midrange-l@midrange.com
> Subject: Re: Typical PC Guy question - and request for RFB contacts
>
> another note for the masses before i am flooded -
>
> If you wish to send me contact info, please put "JDCC ISERIES BID" in
> your subject and send to me directly at mis@jdcc.edu, so as not to flood
> the list.
>
> the new box i am reviewing has 2 8.58G drives . . . .thought mirrored is
> likely NOT an option as I am currently using 8G or so (just over 70%) on
> the current qty3 4G drives . .. .on the RAID 5 setup . .  i would hope I
> am ..but there are only 3 drives . . .so . if it works like PC RAID.
> then no ... .
>
> I can remove s/36, s/38 environments and the migration and migration
> assistants . .not sure how much that will free up . .i'm told quite a
> bit . . . which might be enough for me to mirror the two drives . which
> would be MUCH better than nothing at least.
>
> I am looking forward to each and every response:).
>
> ----- Original Message -----
> From: "Anthony Hardy" <mis@jdcc.edu>
> To: <midrange-l@midrange.com>
> Sent: Wednesday, December 04, 2002 3:55 PM
> Subject: Re: Typical PC Guy question - and request for RFB contacts
>
> > yes . hehe . to its knees .  . . .my mind is in top condition today as
>
> > you can plainly see:).
> >
> >
> > ----- Original Message -----
> > From: "Justin Haase" <JHaase@jackhenry.com>
> > To: <midrange-l@midrange.com>
> > Sent: Wednesday, December 04, 2002 3:42 PM
> > Subject: RE: Typical PC Guy question - and request for RFB contacts
> >
> >
> > > Hard to say unless you figure out where your contention is coming
> > > from first.  Generally, you should notice a lot better performance
> > > just from
> > the
> > > hop in model.  However, the 17G DASD has me scared you'll be at only
>
> > > 1
> > disk
> > > arm (active - should be mirrored to another 17 Gb drive) while your
> > > old system leads me to think 4x 4 Gb drives with RAID-5.  So you may
>
> > > have an increase in drive contention.
> > >
> > > However, generally speaking you should notice an increase in
> performance.
> > A
> > > detailed analysis of contention would need to be done first to
> > > figure
> out
> > > for sure what kind of numbers you'd get.
> > >
> > > jch
> > >
> > > ps - did you mean "to it's knees"?
> > > pps - be prepared for a barrage of e-mails.
> > >
> > > -----Original Message-----
> > > From: Anthony Hardy [mailto:mis@jdcc.edu]
> > > Sent: Wednesday, December 04, 2002 3:38 PM
> > > To: midrange-l@midrange.com
> > > Subject: Typical PC Guy question - and request for RFB contacts
> > >
> > >
> > > This is a multi-part message in MIME format.
> > > --
> > > [ Picked text/plain from multipart/alternative ]
> > > I, having very little AS400/iseries experience am in charge of our
> current
> > > AS400.  I understand fully the impact in performance when I talk in
> > > Megahertz, RAM, etc. and have learned a decent amount of IBM lingo,
> DASD,
> > > main memory, CPW, etc.
> > >
> > > My question is this .  .our third pary vendor recently made a needed
> > change
> > > to our administrative software which has our current system at its
> needs.
> > > We are a higher ed. institution and we have students waiting 3-4
> > > minutes
> > for
> > > fees to process.
> > >
> > > Our current machine is a model 600-2129 , 22.7 SHARED CPW, 192 main
> > > mem.
> > and
> > > 12G DASD.
> > >
> > > I am looking at a refurb 170-2291, 115/25 CPW, 512 main mem and 17G
> DASD.
> > >
> > > Disk space is not an issue for me . .the ONLY thing this box is used
>
> > > for
> > is
> > > this ONE third party app (no web, mail, storage, etc).  I have been
> > > told that this 170 config will push me to the top of the P05 group
> > > (don't
> want
> > to
> > > go P10 for budgetary reasons).
> > >
> > > My questions are this:
> > >
> > > 1. What kind of performance increase am I looking at generically.  I
> know
> > > you can't give me exact figures, but in generic terms, are we
> > > talking
> > about
> > > moving from a 386 to a pentium here?  maybe better?  I have some
> > performance
> > > figures on this box . .but i'm really not interested in specifics .
> .just
> > > trying to get an overall feel for CPW ratings and the difference
> > > they
> > make.
> > >
> > > 2. I need to bid out this project (the hardware, license transfer
> > > and
> data
> > > move).  If you handle this type of thing, please send me your
> > > contact information, including name, address, phone, fax and email.
> > >
> > > Sincerely,
> > >
> > > Anthony Hardy
> > > Director of MIS/Enrollment Management
> > > Jefferson Davis Community College
> > > (251) 809-1531
> > > --
> > >
> > > _______________________________________________
> > > This is the Midrange Systems Technical Discussion (MIDRANGE-L)
> > > mailing
> > list
> > > To post a message email: MIDRANGE-L@midrange.com
> > > To subscribe, unsubscribe, or change list options,
> > > visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l
> > > or email: MIDRANGE-L-request@midrange.com
> > > Before posting, please take a moment to review the archives at
> > > http://archive.midrange.com/midrange-l.
> > >
> > > _______________________________________________
> > > This is the Midrange Systems Technical Discussion (MIDRANGE-L)
> > > mailing
> > list
> > > To post a message email: MIDRANGE-L@midrange.com
> > > To subscribe, unsubscribe, or change list options,
> > > visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l
> > > or email: MIDRANGE-L-request@midrange.com
> > > Before posting, please take a moment to review the archives at
> > > http://archive.midrange.com/midrange-l.
> > >
> >
> > _______________________________________________
> > This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
> list
> > To post a message email: MIDRANGE-L@midrange.com
> > To subscribe, unsubscribe, or change list options,
> > visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l
> > or email: MIDRANGE-L-request@midrange.com
> > Before posting, please take a moment to review the archives at
> > http://archive.midrange.com/midrange-l.
> >
>
> _______________________________________________
> This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing
> list To post a message email: MIDRANGE-L@midrange.com To subscribe,
> unsubscribe, or change list options,
> visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l
> or email: MIDRANGE-L-request@midrange.com
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/midrange-l.
>
> _______________________________________________
> This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
> To post a message email: MIDRANGE-L@midrange.com
> To subscribe, unsubscribe, or change list options,
> visit: http://lists.midrange.com/cgi-bin/listinfo/midrange-l
> or email: MIDRANGE-L-request@midrange.com
> Before posting, please take a moment to review the archives
> at http://archive.midrange.com/midrange-l.