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backblaze hdd brand survey of their hdd failure rate

post #1 of 8
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yet again HGST still being the best hdd that has the least failure rate
https://www.backblaze.com/blog/hard-drive-reliability-q3-2015/

pretty suprised that they still buy seagate though despite their high failure rate
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post #2 of 8
How did the Seagate Barracuda Green get a %222.77 failure rate? Did they catch fire and burn down the computers they were in?
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post #3 of 8
Quote:
Originally Posted by maikon View Post

...pretty suprised that they still buy seagate though despite their high failure rate

Their "interesting" business plan is based on getting the Seagates cheap enough to offset the cost of frequent replacements, including labor. So far, wacky though it may seem, it seems to be working for them.

Quote:
Originally Posted by wizardonthejob View Post

How did the Seagate Barracuda Green get a %222.77 failure rate? Did they catch fire and burn down the computers they were in?

The figures BB has been providing are raw failures which is skewed in that they don't account for the age of the drive when it fails; the figures are just for the total number of failures in any given timeframe. For example, WD showed a sharp increase in failures but, per BB's own notes, that was due to the average age of the failed drives being over five years. What would be far more meaningful for us would be to show the failure rate for drives after a specific amount of service time, such as the average failure rate for drives at one, two, three, etc. years of service. This could be difficult for them since they would have to maintain a history for each drive and I doubt they bothered to do that.
Edited by Lady Fitzgerald - 11/9/15 at 11:57am
     
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post #4 of 8
Saw this in the comments section of the report.



I cringe every time I see the words "certified refurbished" on a freggin hard drive.
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post #5 of 8
Quote:
Originally Posted by maikon View Post

yet again HGST still being the best hdd that has the least failure rate
https://www.backblaze.com/blog/hard-drive-reliability-q3-2015/

pretty suprised that they still buy seagate though despite their high failure rate

if you consider the price factor as well, then HGST doesn't worth like double price for like 2 % better failure rate.
post #6 of 8
Quote:
Originally Posted by Lady Fitzgerald View Post

The figures BB has been providing are raw failures which isskewed in that they don't account for the age of the drive when it fails; the figures are just for the total number of failures in any given timeframe. For example, WD showed a sharp increase in failures but, per BB's own notes, that was due to the average age of the failed drives being over five years. What would be far more meaningful for us would be to show the failure rate for drives after a specific amount of service time, such as the average failure rate for drives at one, two, three, etc. years of service. This could be difficult for them since they would have to maintain a history for each drive and I doubt they bothered to do that.
The raw data they have available actually allows you to sort in this way. Also, the chart in their quarterly blog post shows failure rates per year/quarter.
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post #7 of 8
Quote:
Originally Posted by claes View Post

Quote:
Originally Posted by Lady Fitzgerald View Post

The figures BB has been providing are raw failures which isskewed in that they don't account for the age of the drive when it fails; the figures are just for the total number of failures in any given timeframe. For example, WD showed a sharp increase in failures but, per BB's own notes, that was due to the average age of the failed drives being over five years. What would be far more meaningful for us would be to show the failure rate for drives after a specific amount of service time, such as the average failure rate for drives at one, two, three, etc. years of service. This could be difficult for them since they would have to maintain a history for each drive and I doubt they bothered to do that.
The raw data they have available actually allows you to sort in this way. Also, the chart in their quarterly blog post shows failure rates per year/quarter.

No, the raw data used in the chart shows only the number and percentage of failures per brand during that quarter, not the age of the drives at the time of failures. Read what I wrote again.
     
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post #8 of 8
Yeesh sorry to offend redface.gif
Quote:
Originally Posted by Lady Fitzgerald View Post

No, the raw data used in the chart shows only the number and percentage of failures per brand during that quarter, not the age of the drives at the time of failures. Read what I wrote again.
No, the raw data is not the data in the chart, which is a summary analysis. Please read what I wrote again:
Quote:
Originally Posted by claes View Post

The raw data they have available actually allows you to sort in this way. Also, the chart in their quarterly blog post shows failure rates per year/quarter.
As you can see, although I am referring to the same data set, I am also referring to two different ways it can accesses - the "raw data" as opposed to "the chart in their quarterly blog."

Regarding "the chart in their quarterly blog," although it does not show the age of the drive/only goes back to 2013, it does show that some drives were not deployed in 2013 (newer models that hadn't been purchased/released). While you can not draw conclusively how old a drive is from this information, you can see yearly failure rates per drive, as I argued.

Further, the "raw data" is actually very explicit about when a drive was deployed and it's quarterly failure rates. You can get that data here, as linked to twice in the blog post, which includes a lot more data than provided in their quarterly summaries. SQL required. thumb.gif
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Hitachi 120GB 2.5" LG BR-RW CM GeminII S + NF-P12 2x NF-R8 - Intake 
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NF-B9 Windows 7 Sony KDL-46NX700 MK700 
PowerCaseMouseAudio
Antec EA-650 Zalman HD160XT, Modded MK700 Yamaha RX-V373 
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finally quiet
(20 items)
 
Peggy
(11 items)
 
Betty - WIP
(17 items)
 
CPUMotherboardGraphicsRAM
i5-760 3.8 + turbo MSI P55-GD80 MSI GTX 970 Golden Edition 16GB Tactical LP 1600 c8 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Pro 128GB OCZ Agility 60GB Spinpoint F3 1TB Noctua NH-U12P SE2 
CoolingOSMonitorMonitor
2x NF-P12, CPU OS X 10.10, 8.1 Ultimate Asus VW246H Ergotron Neo-Flex 
KeyboardPowerCaseMouse
CM Quick Fire Rapid EVGA Supernova G2 850W Silverstone FT-02W CM Spawn 
AudioAudioAudio
Sony TA-AX380 Sennheiser HD 280 KLH 911B 
CPUMotherboardGraphicsRAM
i3-2125 GA-H61N USB3 HD3000 8GB Samsung Miracle RAM 
Hard DriveHard DriveHard DriveCooling
Kingston 60GB 3ware/LSI 9750-4i Hitachi 5k3000 2TB x4 RAID 5 Intel for now 
OSPowerCase
OS X 10.8.2 Corsiar CX430M Fractal Design Node 304 
CPUMotherboardGraphicsRAM
i3-2100 ASUS P8H67-M PRO/CSM ASUS Passive GT 440 4GB Dominator 1600 c8 
Hard DriveOptical DriveCoolingCooling
Hitachi 120GB 2.5" LG BR-RW CM GeminII S + NF-P12 2x NF-R8 - Intake 
CoolingOSMonitorKeyboard
NF-B9 Windows 7 Sony KDL-46NX700 MK700 
PowerCaseMouseAudio
Antec EA-650 Zalman HD160XT, Modded MK700 Yamaha RX-V373 
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