Re: 7.3 upgrade & disk space requirement

[DrFranken <midrange@xxxxxxxxxxxx>]

If your i810 had 15K Drives unless you moved to SSDs the disks in a 720 
were the same approximate performance as those in the 810.

The big difference was the RAID cards.  For the CEC in the  720 the RAID 
cards were no big shakes, they were redundant which is good but not 
exceptionally quicker. If you moved to FC #5887 drawers and FC #5913 or 
newer (No cache battery) cards then yes the improvement with those was 
pretty impressive.

So as usual, 'It Depends.' :-)

        - Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 6/1/2017 10:54 AM, Justin Taylor wrote:
> That can also go the other way.  When we got replaced our iSeries 810, we chose a POWER 720 for the number of disk arms.  Our BP assured us that the newer drives were fast enough to get by with fewer disk arms.  My boss wasn't buying it.
>
>
>
> -----Original Message-----
> From: Rob Berendt [mailto:rob@xxxxxxxxx]
> Sent: Thursday, June 01, 2017 6:54 AM
> To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
> Subject: RE: 7.3 upgrade & disk space requirement
>
> I bet it's really tough for hardware peddlers when someone finally upgrades their ancient hardware with six 17GB drives for a total of about 100GB space, and you try to sell them six 140GB drives just to get a good number of arms.
> I can just hear them saying "WTF???  Why do I need to upgrade to 840GB?
> Are these newer versions so full of bloatware???"
>
> I've heard the counter argument is that the old hardware is so slow that even with only one arm the performance of the new machine would not be bad.  I suspect that is by the guy who is hoping to at least get the machine in the door and hopefully he won't lose his job or get sued when they decide they really do need more drives just because of the arms.
>
>
> Rob Berendt
> --
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