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3TB HGST Ultrastar 7K4000 3.5" SATA III Hard Drive (Refurb) EXPIRED

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Newegg.com has 3TB HGST Ultrastar 7K4000 3.5" SATA III Hard Drive (Refurbished, HUS724030ALE641) on sale for $49.99 - $5 w/ promo code 17FAN082 = $44.99. Shipping is free. Thanks Davidhh
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Editor's Notes & Price Research

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To learn more about the features and benefits of this hard drive, check out this data sheet from HGST - Randy71

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Edited July 12, 2017 at 12:23 AM by
Newegg has the "refurbished" (server pulls) 3TB HGST/Hitachi Ultrastar 7K4000 HUS724030ALE641, 64MB Cache 7200RPM SATA III 6.0Gb/s 3.5" Enterprise Internal Hard Drive on sale for $49.99 - $5 off w/ promo code 17FAN082 until 7/13, as part of their FantasTech promotion to compete with Amazon Prime Day, or $44.99 total. Shipping is free. Faster 2-day shipping is available with Shoprunner.

The previous best price seen on these is $47 once with an e-bay limited use coupon. Generally, these go on sale for around $55.

Note that these "refurbished" drives are pulls from server farms that have likely been in use for over 20,000 hours. You're going to want to run a scan of the SMART data right away to make sure it's healthy without bad sectors or errors. It's probably also a good idea to use software like Hard Disc Sentinel to make sure it's reading and writing without errors. That said, these are enterprise level drives that are meant to be much hardier than retail user drives and are specified for over 2 million hours median time before failure.

https://www.newegg.com/Product/Pr...001J-00224
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I bought two of these 'server pulls' a while ago from Ebay for about the same price. No errors on either, but 15K hours use on one and 17K hours on the other. That 17K hours is a full two YEARS of constant use, but there's no guaranty what you'll receive. Could be better or worse. So while these are fine for backups or part of a redundant RAID, I'd think twice before using them as a main boot drive or for any critical data.

Normally I wouldn't bother with a used hard drive, but these are Enterprise class HDD with some of the highest rated MTBF* around. Here a review on the drive, for anyone interested.
http://www.tweaktown.com/reviews/...index.html

BTW, it's 2 million hour MTBF, or MEAN time before failure. Not 2 millions hours of wear, like OP misstates. For anyone rusty on their high school math, the 'mean' is just a way of saying average. It does not mean they'll last 2 million hours, especially in real world use! In regular use they still only seem to last in the tens of thousands of hours before failing.

*MTBF is determined by the manufacturer and doesn't necessarily proove anything about the drive reliability any more than the length of the warranty. A larger one is a good sign, but it's not any kind of guaranty.
29 Helpful?
Exactly. That's my ex-wife.
8 Helpful?
Actually that's median. Mean and average are the same thing.
7 Helpful?

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#3
I bought two of these 'server pulls' a while ago from Ebay for about the same price. No errors on either, but 15K hours use on one and 17K hours on the other. That 17K hours is a full two YEARS of constant use, but there's no guaranty what you'll receive. Could be better or worse. So while these are fine for backups or part of a redundant RAID, I'd think twice before using them as a main boot drive or for any critical data.

Normally I wouldn't bother with a used hard drive, but these are Enterprise class HDD with some of the highest rated MTBF* around. Here a review on the drive, for anyone interested.
http://www.tweaktown.com/reviews/...index.html

BTW, it's 2 million hour MTBF, or MEAN time before failure. Not 2 millions hours of wear, like OP misstates. For anyone rusty on their high school math, the 'mean' is just a way of saying average. It does not mean they'll last 2 million hours, especially in real world use! In regular use they still only seem to last in the tens of thousands of hours before failing.

*MTBF is determined by the manufacturer and doesn't necessarily proove anything about the drive reliability any more than the length of the warranty. A larger one is a good sign, but it's not any kind of guaranty.
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Last edited by Danzilla July 11, 2017 at 06:56 PM.
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#4
Quote from Danzilla
:
I bought two of these 'server pulls' a while ago from Ebay for about the same price. No errors on either, but 15K hours use on one and 17K hours on the other. That 17K hours is a full two YEARS of constant use, but there's no guaranty what you'll receive. Could be better or worse. So while these are fine for backups or part of a redundant RAID, I'd think twice before using them as a main boot drive or for any critical data.

Normally I wouldn't bother with a used hard drive, but these are Enterprise class HDD with some of the highest rated MTBF around. Here a review on the drive, for anyone interested.
http://www.tweaktown.com/reviews/...index.html

BTW, it's 2 million hour MTBF, or MEAN time before failure. Not 2 millions hours of wear, like OP misstates. For anyone rusty on their high school math, the 'mean' is roughly similar to saying average*. It does not mean they'll last 2 million hours, especially in real world use! In regular use they still only seem to last in the tens of thousands of hours before failing.


*Mean is actual the center of a distribution. WIth the set of numbers 0, 2, 7, 9, 9, 10, 10 the average would be 47/7 = 6.71. The mean is the center value (4th), which is 9.
Actually that's median. Mean and average are the same thing.
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#5
Quote from sapio
:
Actually that's median. Mean and average are the same thing.
Embarrassment So I'm the one that doesn't remember his high school math! Noooo!
(I remembered that there was another term used for something similar to average, but assumed it was mean, as I wouldn't have come up with the term 'median' if my life depended on it.)
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#6
Mean is the median in a normal distribution Smilie
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#7
What's annoying is I just paid $49.99 for 5 on ebay for the same drives on ebay's "deal of the day"..couldn't get a 6th because ebay randomly decided so. Here I could have gotten all 6 and saved some cash too. (putting together raid-z2 freenas setup)
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#10
can this be inserted into a 3.5 inch disk enclosure and used a plug and play usb 3.0 storage?
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#11
I use two of these in my Synology NAS. No issues.
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#12
Quote from Nilay
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can this be inserted into a 3.5 inch disk enclosure and used a plug and play usb 3.0 storage?
you mean just like every other SATA 3.5" drive?? yes, assuming your enclosure isn't so old it has a 2TB limit.
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#13
Quote from Danzilla
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you mean just like every other SATA 3.5" drive?? yes, assuming your enclosure isn't so old it has a 2TB limit.
Or if the enclosure is IDE! lol

And yes these should be great drives new, but if they were on servers they would have gone through humongous amounts of use, so accept them for what they are if you plan on purchasing.
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Last edited by RattyRattyT July 11, 2017 at 08:03 PM.
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#14
How do these compare to the Deskstar NAS drives? Looks like double the MTBF but a fraction of the cost.
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#15
Not bad. Good for installing Steam game collection on!
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