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6TB seagate drive with USB 3.0 $109

$109.00
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well I am looking to build a Raid , So I bought one to find out the drive . the drive is a Seagate barracuda , the drive it self run $160 at Newegg

Also you can get 2% back for using the Costco visa

https://www.costco.com/Seagate-Ba...65355.html
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Created 07-03-2018 at 06:12 PM by PaulM1791
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$109.00
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#2
I saw this too, but reviews for reliability seem horrible. Does anyone have guidane for backup drives? I am looking to scan and store a trove of family photos.
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#3
Seems like amazon is matching the price - https://www.amazon.com/dp/B01K4241D0
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#4
What is good for xbox
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#5
I wouldn't these in a RAID array; sure the idea of RAID is redundancy, but do you really want to build an array where the odds are good that you're going to have to replace one of the disks within a year or so? Hedge your bets and stick to disks with good reliability records, even if they cost more. I'd go with HGST, myself.

Just to pull some numbers out of my a$$, let's say 10% of these disks fail within a year (not unlikely, judging by the reviews on Amazon). Let's further say that you've got a 4 drive array. That gives you a 40% chance that you're going to have a drive failure within a year.
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Last edited by swechsler July 3, 2018 at 06:33 PM.
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#6
Costco, eBay, Amazon,... all are having similar or better deal on this since last week.
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#7
Quote from swechsler
:

Just to pull some numbers out of my a$$, let's say 10% of these disks fail within a year (not unlikely, judging by the reviews on Amazon). Let's further say that you've got a 4 drive array. That gives you a 40% chance that you're going to have a drive failure within a year.
That isn't quite how it works. If there is a 10% failure rate the odds of any drive failing, no matter how many you have, is still 10%. The rate isn't cumulative.
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#8
Quote from AVB
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That isn't quite how it works. If there is a 10% failure rate the odds of any drive failing, no matter how many you have, is still 10%. The rate isn't cumulative.
Actually I think we're both wrong, although I forget how to calculate it. It's not directly cumulative, because if there were 10 drives then it would be at 100%, however, you have to realize that the odds of having any drive in a set of n are greater than the odds of a single drive failing. I believe the odds for any drive in a set of 4 failing in this instance would be 34% (1-.90*.90*.90*.90).
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#9
These drives are not meant to be used in Raid
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#10
it does appear amazon has price matched, they were not 109 last week.and with 5% cashback with an amazon visa...that is a better deal. anyhow , I looked up the drive model number on backblaze and this 6TB is supposed to be better than WD. Wd owns Hitachi.. so that compares them to hitchi as well
https://www.backblaze.com/blog/ou...revisited/

However of interest is the 4 tb seagates look like crap . The numbers are approaching 30% failure , that is crazy high and i would understand be a little leery of them...

too late the are already in raid 10... so if they fail like the 4tb I am grateful they are raided

after all a raid is like insurance.you don't want to use it but grateful when you have to.
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#11
Quote from swechsler
:
Actually I think we're both wrong, although I forget how to calculate it. It's not directly cumulative, because if there were 10 drives then it would be at 100%, however, you have to realize that the odds of having any drive in a set of n are greater than the odds of a single drive failing. I believe the odds for any drive in a set of 4 failing in this instance would be 34% (1-.90*.90*.90*.90).
Just a thumbs up for catching and correcting your own stats error. Don't see that much.
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#12
Quote from CSIG1001
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These drives are not meant to be used in Raid
Most drives aren't, but that doesn't mean they won't work. In my experience, the only drives that truly won't work well in a RAID setup are green drives.
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#13
Quote from swechsler
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Most drives aren't, but that doesn't mean they won't work. In my experience, the only drives that truly won't work well in a RAID setup are green drives.
WD Reds are made for raid not seagate crap drives , they are only good for reading not writing
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