Actually you do need to worry since it's a large capacity drive but only if the alignment is not properly done.
I know this is a standard HDD, but, download AS SSD Benchmark from this sitehttp://www.alex-is.de/
Open it and check the left topmost square where it displays the Drive and it's status
It's something like this
msahci - ok
1024 - ok
Depending on your BIOS settings for AHCI or IDE, that ought to be ok and the 1024 Ok should be ok in green, if the disc has not been aligned properly then the 1024 will be replaced by some number and be in red and not ok.
This can be corrected using the paragon alignment tool and is pretty simple and free.
Check it and see if it's fine or else follow the paragon alignment instructions to get it right.
I wouldn't worry too much about it, but , it certainly does effect speed and data credibility, something a HDD is all about.