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  3. April 2018

RE: For the Technical guys

I remember the old 3370 drives which does date me. But our drives are still under maintenance from IBM and I have had IBM show up at the door with a new drive before I got in the next morning. IBM was notified by the system. I am a big fan of Raid 6. Saved me at least 3 times in 3 years.

Ed Waldschmidt
IT Project Manager|PHD, Inc.
9009 Clubridge Drive
260.479.2283
*********************************************
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http://www.phdinc.com/
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From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> On Behalf Of Rob Berendt
Sent: Wednesday, April 25, 2018 9:30 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: For the Technical guys

Many of us have experienced disk failures. And most of those (who didn't
ignore messages on QSYSOPR, etc) have recovered from them with zero user
interruption.
That being said there will always be those who have rarely, if ever,
experienced a disk failure and keep their systems for a decade or more
after any supported OS would run on it. These people may never understand
your suggestion to replace all disks every 3 years. Even I find it rather
draconian (except for the huge maintenance charge on SSD's).

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com<http://www.dekko.com>





From: Diego Kesselman <diegokesselman@xxxxxxxxx<mailto:diegokesselman@xxxxxxxxx>>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx<mailto:midrange-l@xxxxxxxxxxxx>>
Date: 04/25/2018 09:22 AM
Subject: Re: For the Technical guys
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx<mailto:midrange-l-bounces@xxxxxxxxxxxx>>



Rob,

That's true. But SSDs and HDDs have a MTTF rounding 3 years. I don't
recommend using old disks on production systems.
I still remember my 141GB disks (1st gen) dying like flies

El mié., 25 de abr. de 2018 08:15, Rob Berendt <rob@xxxxxxxxx<mailto:rob@xxxxxxxxx>> escribió:

The biggest drawback to SSD is the cost of maintenance after the initial
warranty period.
If you're a shop who replaces your hardware every 3 years no big deal.
If you're a shop who keeps your hardware until the highest release it
ever
supports hits EOS, very big deal.
SSD maintenance fees are very painful. Level 10 on the :-( scale.


Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com<http://www.dekko.com>





From: Diego Kesselman <diegokesselman@xxxxxxxxx<mailto:diegokesselman@xxxxxxxxx>>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx<mailto:midrange-l@xxxxxxxxxxxx>>
Date: 04/25/2018 09:07 AM
Subject: Re: For the Technical guys
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx<mailto:midrange-l-bounces@xxxxxxxxxxxx>>



...and 931GB Mainstream SSD cost the same as 15k HDD per GB...

El mié., 25 de abr. de 2018 08:05, DrFranken <midrange@xxxxxxxxxxxx<mailto:midrange@xxxxxxxxxxxx>>
escribió:

They are in the list but don't buy 'em! Even for test and dev those
things are slow. At least get the 15K Drives and a few more of them.
For
test and dev you may find that the read intensive SSDs will work for
you
also yilding vast leaps in performance at reasonable cost.

- Larry "DrFranken" Bolhuis

www.Frankeni.com<http://www.Frankeni.com>
www.iDevCloud.com<http://www.iDevCloud.com> - Personal Development IBM i timeshare service.
www.iInTheCloud.com<http://www.iInTheCloud.com> - Commercial IBM i Cloud Hosting.

On 4/25/2018 8:58 AM, Gad Miron wrote:
Hi Techies.

Looking at (competing) quotes for a new S914 (P9) dev. machine:

one BP configures 1.1TB 10K RPM SAS SSF-3 disks
the other BP says these disks are not configurable for S914 IBM i
machines.

Who is correct?

TIA
Gad

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