A couple of days ago I was reading this thread and amongst the discussion I found a new HGST 2TB hard drive for a pretty decent price so I decided to buy it as my 1TB drive was almost full.
However, a little while after I bought it I read some of the reviews and a few were complaining about the drives not being new and had 16000 - 25000+ hours of power on time and that the seller was falsifying the SMART data to show them as new drives.
So today my drive arrived and at this point I was 100% sure that it was not a new drive and commenced with my testing.
I first opened Gnome Disk Utility and viewed the SMART Data:
From here everything seems fine, it has 0 bad sectors, power cycles count is 1 and the power on time is zero. But this is not conclusive evidence that this drive is new as this data can be falsified.
I then ran sudo smartctl -l selftest /dev/sdb
and these were the results:
martctl 6.5 2016-05-07 r4318 [x86_64-linux-4.8.6-300.fc25.x86_64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short captive Completed without error 00% 32385 -
# 2 Short offline Completed without error 00% 31978 -
# 3 Short offline Completed without error 00% 15579 -
# 4 Short offline Completed without error 00% 12782 -
# 5 Short offline Completed without error 00% 12369 -
As you can see the last test ran on this drive was with a power on time of 32385 hours which is 3.6 years, this means that the drive is at least 3.6 years old. Also the date listed on the drive is MAY-2012 so the drive its self is five years old and likely won't be under manufactures warranty, especially given that the power on is over three years which is more than the warranty from HGST.
I am also running testdisk to see if I can find anything on the drive but it hasn't turned up with anything as of yet.
All of this isn't such as big issue for me as I noticed early on that this drive was a little bit dodgy and it is still within the return period from Amazon, but others have not been so lucky, from reading the reviews (from multiple sellers) these drives are likely to last around 6 months at most which is past the return period from Amazon and the drive isn't covered under warranty from HGST either, and not to mention massive data loss for people who don't have regular backups.
The drive I got was sold by C-PAY on Amazon but many different sellers are doing the same thing as can be seen by the reviews for this drive: