Update
I've had confirmation from Seagate that the drive I purchased from SE is covered by an Australian 5 year warranty.
Don't know whether it's just my drive, the batch, or a universal problem, but if you buy one of these drives, don't expect the online warranty checker to correctly apply the Australian warranty duration.
If you're in the same boat I was - keen to determine that your drive is entitled to the full 5 years, and the online verification says it's not - you can contact support through http://support2.seagate.com/ attaching proof of purchase and the drive model/serial and have them manually update the online warranty to exactly 5 years from date of purchase. Be prepared for them not to believe you. The first two email reps (in Singapore?) were adamant that nowhere in the world got a 5yr warranty on the NAS drives, that their (Seagate's) Aus website was a mistake and it would be corrected to say 3 years. In the end I called 1-800-14-7201 got the case joined to the email case and requested escalating to a manager to get the outcome I did.
Original
Word of warning to those of us who've bought Seagate NAS drives from Shopping Express, claiming 5 year warranties. (e.g. https://www.ozbargain.com.au/node/152369 and https://www.ozbargain.com.au/node/148364 ) You might have got a lot less than you paid for.
I bought a ST2000VN000 (2TB NAS drive) on 7/10/2014 at which time SE claimed a "5 year manufacture (sic) warranty". Internet wayback machine http://archive.org/web/ confirms they were listing the drive with the (I assume Aus specific NAS warranty) at least since 7 July 2014. That also aligns with the OzBargain listings above where they also claimed 5 years. Checking Seagate's online warranty validator, the drive they sent me came up with LESS THAN 2 YEARS remaining, so I contacted SE with full pics of all the drive details- they even asked for manuf date. David finally replied only with "Should be all good. We will cover you" and at that point their website was changed to show 3 Year warranty on the Seagate NAS drives. (Other vendors like Scorptec still claiming 5 years which I guess is maybe an indication of Aus stock)
Have contacted them repeatedly since to get some reason/apology/more formal guarantee of the support for the drive, but nothing sensible is forthcoming. Final (not very smart) response was from James - claimed it was all because the drive (which wasn't intro'd until mid 2013) had probably been sitting in storage at the Australian Distributor for the difference between the original 5 year and 2 years remaining warranty and that I could just use my invoice to get warranty service (From Seagate's online RMA? When the invoice doesn't even state a warranty period? Geez. :s )
Interested to hear anybody else's luck with warranty checking on these drives from SE - or a response from the SE rep - cause they don't seem to want to reply to me through their helpdesk anymore… doesn't inspire confidence in being "covered" by them.
Yeh, I no longer buy Seagate due to warranty concerns and also am a bit careful with ShoppingExpress. I ran into false advertising problems with logitech android keyboards with them earlier but it became painful to resolve so haven't chanced them up on it. I got the feeling it was going to be painful to get ANY result.
As for what your saying, that really sounds wrong. Warranty does not start from manufacturing date, yes sure manfacturers often use this if no receipt is provided, but once a valid receipt is offered they should then set the date from the date of the receipt. Sounds really dodgy, might want to clarify with your local consumer affairs group. Only possible reason for that I can see is if Shopping Express is not recognised as a valid business or reseller of seagate, then perhaps it would make sense but that would put the warranty responsibility squarely on SE.
P.S. Should never ever keep any kind of electronics in storage for long periods of time. Certain components have a shelf life and inactivity can actually shorten the life of a device more than actual use..