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All that means is you are living on borrowed time. You may not have a
catastrophic failure, but are you willing to bet your paycheck, and those of
all your co-workers paychecks on it?

I'm happy Holger's systems are holding up, it proves the hardware is top
notch. That does not change my premise that the statistics are going to
eventually get you.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Tuesday, February 25, 2014 7:03 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Hard drive failures

On our old Power5 9406-550
36 4328 drives - 1 failure from Nov 2005 to Feb 2013, and that drive failed
gradually over a 2 month period. 8/15/11, failed on 10/8/11.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Holger Scherer
Sent: Tuesday, February 25, 2014 7:20 PM
To: Midrange Systems Technical Discussion
Subject: RE: Hard drive failures

Depends...

our internal statistics on older boxes:

- 73 drives 6717 (!) on old boxes - no failure in the last 12 months
- 168 drives 6718 on old boxes - 1 failure in the last 12 months
- 40 drives 6719 on old boxes - 8 failures in the last 12 months
- 180 drives 4326 on aged boxes - 1 failure in the last 12 months
- 168 drives 4327 on i5 boxes - 9 failures in the last 12 months
- 84 drives 4328 on i5 boxes - 3 failures in the last 12 months

drives in Power6 boxes and newer: <1% of failing drives in 12 months.
Nothing to worry about.

The old 6717 are rock-solid unless you power them down. And yes - we run a
lot of old customer boxes for archive purposes. Old software forces them to
:-)

-h

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer

Age. Your mean time between failure date on those drives has long since
passed.




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