Yes, you do. But what "tiny" hard drive do you have now and what O/S do you have. It would also be an advantage to know the date of your BIOS. Some BIOSs will only take up to 8gb hard drives which would be very difficult to find now.
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Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.