Well, I guess so if that was the only occurrence. I'll never know and I doubt
that they will fess-up.
At any rate, If one wants to use NT or any other OS for that matter in a 24x7
guaranteed manner then one should look into making as much as possible
redundant. Back in my Blue Suit days we did a lot of cause and effect analysis,
particularly on Nuclear stuff, to insure that if one component failed there was
a redundant part to take over the tasks of the failed unit. We also did
analysis to determine what the likelihood of the failure was and what the
cost/benefit of having the redundant part was. Basically, if you can expect say
1 failure every 8544 hours and it will take less than 1 hour to correct the
failure, is it worth the expense to have redundant hardware for that failure?
It's one of those things that needs to be evaluated on a case by case basis. In
the case of NT, you'd need a separate server and be running OPS. What is the
cost, what is the expected frequency, and is the loss >= the cost??
Good questions, but only you can provide the answers. In the case we have here,
out HP's fail once every 4 years on average over the 10+ years of history we
have with HP. And each failure takes about 2 hours to fix. Now at $1000 per
minute of lost revenue that comes to $120,000. A dual server and OPS
architecture would cost $190,000 just to acquire the hardware and software.
Definitely not worth the expense since all of the failures we've had have been
soft ones anyway.
Dick Goulet
____________________Reply Separator____________________
Author: "Mohan; Ross" <[EMAIL PROTECTED]>
Date: 6/25/2001 4:56 PM
Wow. They must have known it
was you, Dick! <G>
so...."last April"....proceeding
scientifically, that's less than
one crash a year...better than
five nines, right?
;->
-----Original Message-----
Sent: Monday, June 25, 2001 4:47 PM
To: Mohan; Ross; Multiple recipients of list ORACLE-L
Ross,
I've had Dell's site crash on me before, last April right in the middle
of
customizing a system. They apologized, but I went with Gateway anyway.
Dick Goulet
____________________Reply Separator____________________
Author: "Mohan; Ross" <[EMAIL PROTECTED]>
Date: 6/25/2001 1:12 PM
Somebody should let Dell know. www.dell.com
They run on NT. When's the last time you heard
about their site being out?
A $40 Billion company can't be all wrong about NT, can it?
-----Original Message-----
Sent: Monday, June 25, 2001 4:58 PM
To: Multiple recipients of list ORACLE-L
OK, after my vacation, I'll wade back into the fray!!
Ron,
To start with I do not believe it possible to guarantee that NT will be
up
24x7, never mind Oracle. That is the main reason that we use Oracle ONLY on
Unix (in one flavor or another) here. All of our NT servers require a
periodic
unscheduled reboot, otherwise they do the unscheduled crash under Murphy's
rules.
Dick Goulet
____________________Reply Separator____________________
Author: "Kevin Kostyszyn" <[EMAIL PROTECTED]>
Date: 6/25/2001 12:31 PM
Wow what a can of worms that has just been opened!!!
KK:)
-----Original Message-----
L.
Sent: Monday, June 25, 2001 4:07 PM
To: Multiple recipients of list ORACLE-L
I have a treasury application that needs to be up 24 x 7 except for
scheduled downtime. Is there any way to guarantee an app will be available
24 x 7 on NT? Is anyone faced with this?
Ron Smith
Database Administration
[EMAIL PROTECTED]
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