Quote:
Quote:
Originally Posted by Stephan56
6/1/09 Update:
SATA's are faster than equivalent PATA's but also use more electricity and run hotter.
Heat is the killer of all electronics.
HARD DRIVES (regardless of manufacturer) begin to self-destruct when they reach 60C (140F) They last longer when run under 50C (122F), and last longest when running at under 40C (104F)
auskck retorted
WRONG WRONG WRONG
This statement is Wrong, SATA drives use less power and run cooler. Believe me I know. I 've been running SATA, ESATA drives in these machines for a while now. I don't know where your getting your information but it is untrue.
Regarding
auskck’s disclaimer of my statement above:
Anyone who builds or maintains any kind of computer system or network is aware that excess heat is the bane of this technology.
First of all let’s begin with the well known fact that excess heat degrades and kills electronic components.
Practically everything associated with computer function requires energy and generates heat.
CPUs generally consume the most electricity and generate the most waste heat. The exception being high speed gaming PCs in which the primary culprit is/are the video card/s. And in commercial systems where banks of multiple hard drives collectively draw more juice and generate more heat.
Of all computer components the one most vulnerable to excess heat is/are the hard drives.
This is why any computer system, be it PC or commercial, is so concerned about air flow.
Fans for intake and out take are crucial to drawing excess heat away from these critical components.
Every hard drive manufacturer has specs on operating temperature ranges.
For example
Seagate states that the
ST3500418AS Barracuda SATA 500GB has an environmental operating temperature range of 0-60C (32-140F).
But I might add that this is a rather generous marketing range and
the ideal operating temp range for maximum hard drive longevity is actually much narrower.
I appreciate
SteelTownGuy bringing up the
Google study.
The Google engineer data was presented Feb 2007 in San Jose, Calif., at the 5th USENIX Conference, on File and Storage Technologies, examined data center performance at temperatures from 15 to 45 degrees Celsius, or 59 to 113 degrees Fahrenheit.
They found
negative effects from high temperature only for the higher end of the temperature range (104 degrees Fahrenheit or more) and even at those temperatures the negative effects were only observed for drives at least 3 years old.
By contrast, a software and hardware manufacturer known as AVTECH Software said the
"optimal" temperature range to maintain data center reliability is between 68 and 75 degrees Fahrenheit.
The Google engineers did report seeing a "modest increase" in failure rates at the lowest end of the temperature
distribution they studied.
Google researchers wrote:
Quote:
"We can conclude that at moderate temperature ranges it is likely that there are other effects which affect failure rates much more strongly than temperatures do."
Frequent utilization seems to lead to problems in drives that are less than a year old, and also in drives that are at least five years old, but not in drives that are in the middle of the age range. This may happen because drives that perform poorly when utilized often do not survive past their first year.
"After their first scan error, drives are 39 times more likely to fail within 60 days than drives with no such errors."
One thing which Google failed to do in releasing this report is include the brand and model of Hard Drives which had the lowest and highest failure rate.
SATA drives generally run much faster, draw more electricity and produce more waste heat than their comparable IDE counterpart.
I know this as a personal fact having run both SATA and IDE hard drives side by side in the same system/s under the same load/operating conditions, and rotating rack positions.
For example at idle with an ambient temp of 76 F the following temps were noted.
Seagate ST3750640A 34C/93F
Seagate ST3750640AS 39C/102F
Maxtor 7L300SO 35C/95F
Maxtor 6Y250PO 29C/84F
Even under heavy load the IDEs consistently ran 10F less than the equivalent SATA.
SATAs require better air flow to help keep them cool which is one of the reasons why they use the more efficient round vs flat ribbon cables.
Granted, reliability stats can very from brand to brand and even model to model from the very same manufacturer.
Whether the drives are manufactured for commercial or private use and, as the Google study concluded, there can be a variance among individual drives of the same model.
Generally if one of these mass produced items is reliably error free after an initial test loads are run it will likely remain reliable for awhile, whereas whenever a scan error is first detected it is a warning that drive failure is imminent.
Granted, high end technology is improving, and trickling down from commercial to private use, however the end result of the Google study still shows that there is a great deal of variability, especially among private users. And, might I add, the hard drives used in these HD recorders is intended for private, not commercial use, as are the replacement drives listed by
Wajo.
So I reiterate:
The Google study focused upon a very narrow commercial range of temperatures from 15 to 45 degrees Celsius, or 59 to 113 degrees Fahrenheit.
They found negative effects from high temperature only for the higher end of the temperature range (104 degrees Fahrenheit or more)
I stated in my earlier post that
Quote:
SATA's are faster than equivalent PATA's but also use more electricity and run hotter.
Heat is the killer of all electronics.
HARD DRIVES (regardless of manufacturer) begin to self-destruct when they reach 60C (140F)
They last longer when run under 50C (122F), and last longest when running at under 40C (104F)
There is nothing within my statement that is contradicted by the Google study.
And even the
Wikipedia report referred to by
SteelTownGuy stated:
Quote:
the “optimum S.M.A.R.T.-reported temperature range of 36 °C to 47 °C.”
Which pretty much concurs with my statement as well.
Regarding the faster SATA requiring more electricity and generating more heat than equivalent capacity IDE’s, I leave that to check for yourself.
I have my own personal (as well as associate) studies which validate this statement but here is a link for anyone interested in doing their own research.
Links 'o Plenty (Ultimate Links Thread). This is another good place to discuss the latest computer hardware issues and technology.
http://forums.legitreviews.com/about2234.html
Granted, SATA is a superior performance technology over PATA, with many advantages. But until a new breed of SATA hard drive arrives on the local market the current SATAs of which we are considering here do require a little more electricity and do run a little hotter than their PATA counterparts.
Whether the excess heat produced and additional electricity is clinically significant depends upon the individual.
Bear in mind that the 160 GB HD on this unit is considered modest by today’s standards. Larger capacity drives with more platters tend to produce more heat than the smaller capacity drives.
Airflow (and hence heat) is a critical issue, which is why most electronics manufacturers recommend a minimum amount of free space around their operating devices.
Unlike a computer it is difficult to monitor the internal temperature of the hard drive in this recorder.
If one finds it necessary to replace the existing drive due to failure or plans on upgrading to a larger drive I recommend checking the replacement drive for initial reliability by having it first run on a PC where the disc can be scanned and run under load conditions to help insure initial individual reliability before installing it into the recorder unit. The drive can always be F disked prior to installation in the recorder.
Kelson wrote:
Quote:
You either keep the unit and live with the flaws or return it for a refund. Funai is a maker of throw-away electronics; a pure bottom-feeder. Product support beyond replacement or refund is not part of their business model. Once a product is manufactured, boxed and warehoused it is basically sold as-is until the stock is cleared.
Thanks to the many posts like yours prospective buyers of the 2160 should have a clear understanding of what the flaws in the unit are. They should then make their purchase decision based on whether or not they can live with those flaws without any expectation that they will ever be fixed.
I agree with and appreciate
Kelson’s post.
Because, unfortunetly,
Funai appears to be the only game in town I will, initially anyway, have to play by whatever rules they dictate.
I plan on keeping the unit, of course, as well as the back up so long as it is functional, as I will be able to use them both. I will work within the limitations of their abilities and apply the work arounds as necessary.
This however does not negate me from applying whatever pressure that I can to encourage Funai to address the obvious intrinsic manufacture flaws in a general constructive manner.
In the meantime I will acquire a couple of
ST3500418AS Seagate Barracuda SATA 500GB w/16MB cache hard drives, install them in a PC and follow my own advice.
After the warranty expires I will open the cases of my
H2160MW9A’s and install them, per the instructive advice provided by
auskck, Wajo and others within this forum.
I would also like to get a couple of spare burners as well, for I know that is a critical component bound to eventually fail from repetitive use.
Hopefully someone here can provide a source for that component for us as well.
I offer my grateful thanks for the knowledgeable input of the many posters and my sincere appreciation to
Wajo for originating this very enlightening thread.