Here is one of my systems.  It is one month away (March 5) from being up for
four years.  It is in production and is processing thousands of transactions
daily. 

I am sure that there are other systems that have been up much longer.

:uptime
UPTIME 20030424
Copyright (c) 1996  Allegro Consultants, Inc.     Author:[log in to unmask]

MPE/iX 7.5; System started 2004-03-05 @  5:49 PM
 9:17pm  up 1434 days,  3:28   18 users

Boot history: (grouped)

last what    T  Date          Time     Group     Command
------------ -  ---------------------  --------  ----------------
last bootup     2004-03-05 @  5:49 PM  CONFIG    start    norecovery
prior bootup    2004-03-05 @  4:10 PM  CONFIG    START    NORECOVERY

last INSTALL T  2004-02-14 @  5:44 AM            install
last UPDATE  T  -empty-

last DUMP    T  -empty-


Mark Ranft 
(612) 804-2774
[log in to unmask] 

-----Original Message-----
From: OpenMPE Support Group [mailto:[log in to unmask]] On Behalf Of
Craig Lalley
Sent: Thursday, February 07, 2008 3:01 PM
To: [log in to unmask]
Subject: Re: How long???

Jeff Kubler <[log in to unmask]> wrote:     To all;
Appreciate everyone's response. I wondered if anyone is a aware of a 
"rule of thumb" that most would use for the average life that might 
be safely expected from a computer system? For instance, how often 
should one plan to upgrade your computer systems? Prior to HP 
foolish termination of the life of the HP 3000, what had been the 
normal practice for upgrading your HP 3000's?
  
 
  I think one of the problems of the HP3000 is that is broke the rule of
thumb, that a computer needs to be upgraded/replaced every 24 to 36 months.
I know of a lot of companies that have been running the same HP3000 for 10
years without a reboot.  :-)  
  
OK, so that may be a bit of a strech, but you get the point.
   
  -Craig