Super User
Super User

Questions tagged [mtbf]

Mean Time Between Failures (MTBF) is the estimated time between failures of a device and is used to help predict its lifespan.

The MTBF is the average time between failures of a device. It is generally calculated in terms of the sum of time that the device is not functional divided by the number of failures. This figure is often used as part of a calculation to determine the expected lifespan of a device and by extension, the warranty period ascribed to it.

9 questions
14
votes
6 answers

Are SSD's really reliable enough for power users?

TL;DR (though please read my full experience before jumping in with a quick answer.) A power user performs a certain amount of write cycles. Does an MLC SSD drive support enough write cycles to last a power user around 5 years of usage. In my first…
JL.
  • 5,818
12
votes
2 answers

How is SSD lifetime affected by usage pattern and amount of free space?

It is known that SSDs are relatively very limited in the number of writes they can take before starting to slow down or otherwise deteriorate. Suppose I have a 250GB SSD with 225GB of files which are seldom modified (like system files) and 25GB…
GJ.
  • 10,151
11
votes
3 answers

Do SSD's really last 285 years?

Some Sold State Disks (SSD) have a mean time between failures (MTBF) of 2,500,000 hours. If you divide that by the rough number of hours in a year you get 2500000÷(365×24) ~= 285 years before there is a problem. I know that the first generation…
Xeoncross
  • 4,842
8
votes
2 answers

ssd 2 million hour mtbf? how is this proven?

How can this ssd (corsair) have a mean time before failure of 2000000 hours? last time I checked that was in the hundreds of years... From experience even with Computers that don't receive constant use ssd's seem to always fail much sooner when…
user478124
4
votes
2 answers

Is Mean Time Between Failures (MTBF) a measure of life expectancy?

Does anyone know if MTBF (Meantime Between Failures) can be used to determine when a piece of computer hardware (CPU cooler, power supply, case fans, etc) will fail, thus requiring replacement? Or is it just an unreliable statistic that can be…
karanza
  • 77
2
votes
2 answers

Data safety: How error-prone are SSDs compared to HDDs

I recently bought an SSD (http://www.samsung.com/de/consumer/m/MZ-7TE250KW). When I tell this to other people, I always get warnings in reply: "SSDs highly error-prone. save your data on a magnetic drive and use the SSD only for the system". For the…
Sven
  • 227
2
votes
1 answer

mean time before failure is given, but variance is missing

I have 8TB HDD WD Gold. Here they claim 2M MTBF (mean time before failure) hours. What is the statistical variance (estimated at least) of this data ?
user865044
  • 43
1
vote
2 answers

Laptop HDD vs Desktop HDD

Recently my desktop HDD failed and I am considering replacing it with two laptop HDDs, 7200rpm, 16mb buffer in RAID 1. I am not able to find anything relevant in regard to MTBF or performance for Laptop vs Desktop HDDs. Any suggestion on this, would…
w00t
  • 123
0
votes
1 answer

SSD drives lifetime

Some years ago when I was looking to buy an SSD drive, I remember reading about how SSD drives had low lifetime with frequent read/writes, so I backed off. Now I see this in Specifications: http://www.kingston.com/en/ssd/s#sms200s3 MTTF: 1,000,000…
g7k
  • 121