Study says failure rates 15 times that of what manufacturers indicate

jmke · 11th March 2007, 11:37

A study released this week by Carnegie Mellon University revealed that hard drive manufacturers may be exaggerating their mean-time before failure (MTBF) ratings on hard drives. In fact, researchers at Carnegie indicated that on the average, failure rates were as high as 15 times the rated MTBFs

http://www.dailytech.com/article.aspx?newsid=6404

jmke · 11th March 2007, 11:38

Quote:

In fact, researchers indicated that drive operating temperatures had little to no effect on failure rates -- a cool hard drive survived no longer than one running hot.

interesting...

11th March 2007, 13:08

ot they just quoted the google results

but the important thing is this:

In our data sets, the replacement rates of SATA disks are not worse than the replacement rates of SCSI or FC disks. This may indicate that disk-independent factors, such as operating conditions, usage and environmental factors affect replacement rates more than component specific factors.

jmke · 11th March 2007, 13:22

people don't buy SCSI/FC disk for lower replacements, they are already running in RAID 5 at least, with support contracts to swap the disks without cost if one breaks down.

11th March 2007, 20:21

Quote:

Originally Posted by Rutar

ot they just quoted the google results

but the important thing is this:

In our data sets, the replacement rates of SATA disks are not worse than the replacement rates of SCSI or FC disks. This may indicate that disk-independent factors, such as operating conditions, usage and environmental factors affect replacement rates more than component specific factors.

As I recall the Google results differed a good bit in some areas, especially in regards to temperatures.

jmke · 11th March 2007, 20:55

google results indicate lower temps give higher failure...
Massive Google hard drive survey

11th March 2007, 11:37	#1
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 78,577	Study says failure rates 15 times that of what manufacturers indicate A study released this week by Carnegie Mellon University revealed that hard drive manufacturers may be exaggerating their mean-time before failure (MTBF) ratings on hard drives. In fact, researchers at Carnegie indicated that on the average, failure rates were as high as 15 times the rated MTBFs http://www.dailytech.com/article.aspx?newsid=6404 __________________

11th March 2007, 13:22	#4
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 78,577	people don't buy SCSI/FC disk for lower replacements, they are already running in RAID 5 at least, with support contracts to swap the disks without cost if one breaks down. __________________

11th March 2007, 20:55	#6
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 78,577	google results indicate lower temps give higher failure... Massive Google hard drive survey __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Components returns rates in France	jmke	WebNews	2	14th May 2010 17:47
ATI DX11 RV870 is 1.6 times faster than RV770 (HD4870)	jmke	WebNews	0	31st August 2009 14:23
Xbox 360 Failure Rate Is 54.2%	jmke	WebNews	14	24th August 2009 20:44
"1234" and "password" are most used passwords according to study	jmke	WebNews	0	13th February 2009 14:58
Firefox downloaded 75 million times	jmke	WebNews	1	1st August 2005 14:13
On death and dying: reconciling yourself to hard drive failure	jmke	WebNews	0	15th February 2005 11:17
Bluetooth Boosts Its Transfer Rates	jmke	WebNews	0	9th November 2004 22:39
VSYNC, Frame Rates, Refresh Rates	jmke	WebNews	0	25th August 2004 11:12

11th March 2007, 13:08	#3
Rutar Posts: n/a	ot they just quoted the google results but the important thing is this: In our data sets, the replacement rates of SATA disks are not worse than the replacement rates of SCSI or FC disks. This may indicate that disk-independent factors, such as operating conditions, usage and environmental factors affect replacement rates more than component specific factors.