SEAGATE BTFO'S WD AND TOSHIBA

>>52513414
What do they mean by failure rate? Is that the probability density function or is it the hazard function?

>>52513414
seagate sells thirty times the amount of 3tb hdd's compared to its competitors, hence why 4TB and 6TB shows much lower results since mainstream doesn't go over 3TB

>>52513468
sectors

>>52513414
So Seagate had a bad batch of 3tb drives a few years ago, and they're all dying now?

>>52513538
their 6TB drives is btfoing everything

>>52513538
I remember seeing something years ago about their 3.5tb drives being bad because they were actually repackaged 4tb drives that didn't meet spec. Not sure if this is the same.

>>52513505
Doesn't really answer the question. In reliability engineering the probability density function would be the portion of the initial number of drives that failed in a given time period, while the hazard function is the chance of it failing in a given time period provided that it has survived until that time. They are very different measures.

>>52513627
you don't use a hard drive once it reaches a bad sector

you trash it and get a one immediately

>>52513728
Still doesn't answer the question.

Suppose you have 100 hard drives, and 25 fail each year (so 4 years of 25 fails per year) the probability density function would be:
year 1: 25%
year 2: 25%
year 3: 25%
year 4: 25%
While the hazard function would be:
year 1: 25% (25 of the 100)
year 2: 33% (25 of the remaining 75)
year 3: 50% (25 of the remaining 50)
year 4: 100% (25 of the remaining 25)

I'm asking which measure they used for reliability, since the image doesn't specify.

>>52513414
>They don't tell us the the number of drives used in these statistics.
Might as well use a random ass number to base these stats upon

>>52513958
>Max # in Service

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>mfw I own multiple 3Tb barracudas and a 4TB toshiba.

>>52514042
they sell toshiba 4TBs here but i want the MD04ABA model, which toshiba drive do you have and for how long has it been running

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I was hoping 4th quarter of 2015 already came up

>>52514061
I have a MD04ACA400.
I use it as backup via a dock.
So most of the time it is offline.

>>52514095
exactly what i plan to do

thats the one available in my store as well, you use NTFS right?

>>52514120
yes.

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>own multiple HSGT 4T drives
>my model number isn't listed
I'm not sure if this is fear or elation.

I haven't had a disk failure since the late 90s (WD 45GB under warranty). Still I hold backups of every single byte I have. Given that Backblaze combined failure percentage is 4.81% I think the best strategy continues to be buying hdds from different manufactures and batches and keep simple backups.

>>52514525
pretty sure 6TB seagate or 4TB toshiba is the best thing to do

>>52513978
So that means that the values used and percentages of values have major discrepancies.

>>52514801
it means you get the one with largest sample size with lowest risk of failure

What is the catch with Backblaze?
$50/year unlimited backup looks affordable as a offsite backup so what is the catch?

>>52514908
nothing, they are huge with extremely well done own pots and know how
this allows them to save shit ton of data cheaply

>>52514942
So can I backup selectively (file by file of my choosing) not mirroring my local hdds. How granular and powerful is their client?

>Your external hard drives need to be connected to your computer and scanned by Backblaze at least once every 30 days in order to keep them backed up.
Yeah fuck that. Make it 6 months and I will consider wasting a weekend doing this but once every 30 days is a no go. This is nothing more that a cloud backup of online data. Anything that isn't on the system is not considered data unless you let it sniff it once every 30 days. THAT IS A BIG CATCH.

>>52515089
what happens if you dont back up after 30 days

>>52515405
they delete the data.

>>52515439
what the fuck`? why would they delete it if you don't want to regularly back up every month

>>52515452
They give you a client to install in your system. Files older than 30 days that cannot be accessed by the client (say on a offline hdd or on a external hdd) are deleted from their backup.
I wonder what will happen if the fiber is cut on your side and the ISP takes more than 30 days to fix it. Will they delete all you data then?
As I said this is NOT unlimited backup. This is backup of online data. It may still be worth it. I do have circa 10TB of online data but given that I would still have to manage offline data backups what is the fucking point of paying them if I still have to manage backups on my side.

>>52515610
that's pretty greedy from their side

but just so you know, "Unlimited" is never unlimited for a company, at least for bandwidth.

>>52515610
>I wonder what will happen if the fiber is cut on your side

what happens if you can't get fibre and it takes over 30 days to complete a backup?

>>52513414
>backnblaze
Maybe quoting people who know how to properly conduct test would better help your argument.
Backblaze took the scientific process, ate it, shat it out, stirred it with poo from the loo, and made charts with the results.

>>52513414
>Seagate wins...
Seagate makes the drives with the very highest failure rate in this report, along with the drives with the 5th highest failure rate.

I have a Seagate 2TB external on my desk, bought on a massive sale just for price. I haven't abused it and use it rarely and it's failing anyway.

184 End-to-End_Error        0x0032   099   099   099    Old_age   Always   FAILING_NOW 1
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   099   000    Old_age   Always       -       1 1 1
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   052   039   045    Old_age   Always   In_the_past 48 (24 181 59 40 0)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       46
193 Load_Cycle_Count        0x0032   030   030   000    Old_age   Always       -       141945
194 Temperature_Celsius     0x0022   048   061   000    Old_age   Always       -       48 (0 17 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       1858h+16m+27.035s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       17500925678
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       7783972267