Re: Mean Time Between Failure

Hello bhupendrachaudhari.

I'm sorry, but this information is not allowed to be published nor do we own this information.
And it is also hard to calculate an MTBF for a whole system. As the single devices may have different values.

But be sure, as long as you have active support on the system, may it be 3yr or 5yr ProSupport, we will do everything to keep the system up and running.

You may also check with the different vendors (depends on the used hardware) if they offer such lists for their parts like hard drive or memory.

Do you have an actual issue with one of the named systems?
Let me know.

Best regards
Stefan

It isn't just "hard" to calculate, but it is impossible to calculate the MTBF for an entire system. What do you even define as a 'failure'? What you would have to factor in besides raw hardware failure rates, is also temperature, humidity, pressure, elevation, vibration from other equipment, directional heat from other equipment, air purity, devices plugged into it, power quality, what is the usage (which roles and services, how much and what type of data, how many users, 8 hours/day or 24, databases or files, Windows or Linux, 1Gb or 10Gb), are there cards installed and are they validated, what backup software and location and is there replication, not to mention questions of how well you maintain your server hardware (and software/drivers) - do you keep the iDRAC/BIOS up to date?, the RAID controller and NICs, or how about the hard drives?, SSD or HDD, SAS or SATA, redundant PS or not and what size are they, BIOS settings, RAID level, drive models ... NONE of this stuff would be tested under MTBF tests - this is all variable once it gets into your hands, and the MTBF would be increased more by any one of these environmental/usage factors than by all the raw hardware or configuration factors.

Dear,

We have installed one R630 and four R730 in Rack and all these servers are operational.

Centos6.0 OS are installed on these server with iDRACK configurared with top Propriety Pertsol Lawfull Interception SW, It is similar to CALIA solution in USA.

We need to know the MTBF for the Hardware Power edge R630/R730.

Service Tag details for ready reference
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DELL Server PoweredgeR630 { {Svc tag removed by moderator}}
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DELL Server PoweredgeR730 { {Svc tag removed by moderator}}
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DELL Server PoweredgeR730 { {Svc tag removed by moderator}}
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DELL Server PoweredgeR730 { {Svc tag removed by moderator}}
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DELL Server PoweredgeR730 { {Svc tag removed by moderator}}
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We need the MTBF/MTTR documentation for client requirmet

Tell them the truth, that no such documentation/information is available and explain to them the impracticality of such a request and the vast meaninglessness of any number they would get. Or just make it up, something like 26280 hours, +/- 20000 hours (see, meaningless).

Mr. Stephen,

If any issue not able to publish, pl share MTBF/MTTR on email..

Appreciating in  advance.

Hi bhupendrachaudhari,

like theflash1932 said, even if you know the time, it is meaningless, MTBF is a theoretical measurement you shouldn't rely on it. 

Let's say an HDD has an MTBF of 20k hours, it will last longer than that or even fail after a third of the time.

I checked it in our systems knowledge base for you and there is no such information available. Regarding the MTBF for HDDs you may check online on the vendor site (check the serial number on the hard drive) - the vendor sets an MTBF. 

I'm sorry but I can't help you out with this information.

Best regards,
Stefan

THANKS

@theflash1932​ pleae let me disagree with you, an aircraft engine is more complicated and have several parts from several different vendors and manufacturers and have a very precise MTBF.

I currently seeking for this same information for the PowerEdge MX servers that I am running at my datacenter.

@DELL-Stefan R​ If you are not allowed to publish this information, is there an official DELL document where I can find the lifespan of my PowerEdge MX servers?

How do I estimate when I will need to replace those servers due to obsolence?

Thank´s

@duminsky​ I think this is the point.
Mostly, MTBF is used to prevent those fails, with preventive maintenance, exchange of risk devices, ... in "retail electronics" usually is the value of the weakest part. And then you are aware to replace that when time gets to it and use for other noncritical tasks. 
Some manufacturers, just put the guarantee (ie. 5years guarantee-> MTBF >= 43800hours).
Still, yes, it is an statistical value and things can happen earlier.
But the intention behind use to be preventive replacement which means more sales :) so, unless it is a really bad value, I do not see other reasons not to share it.