Originally Posted by sepiashimmer
Thanks Lord Xeb, you are one of the most knowledgeable person I've ever come across for storage technologies.
In your opinion, are thinner hard disks more reliable or thicker hard disks more reliable?
Please go into more detail whenever you are free and it won't take your time.
They are about these same really. I dont see a lot of Seagate 1TB drives come in but we do see them. As from as what I can tell they are all really the same at that aspect. However, the big differences sometimes comes into play when you start digging into different families and series of drives. Back when the 1TB single platter seagate drives came out was about when hard drive platters hit 1TB aerial density (how many bits you can fit per platter). Around this time Seagate started to release those single platter 1TB drives. That is also the time I started to see those seagate drives.
WD also has this kind of tech, but they have always seem to stick to the old tried and true methods: Use what you have and make many different drives from them.
Every manufacturer has different hard drives with different quirks and that is where we start to get into drive families. Easiest one would be WD but it gets REALLY complicated. Lets take a WD500AAKX for example. From what I have seen, these drives have the following families:
From what I can tell, there are not a lot of phyiscal differences between each of these but I have seen some with different head counts. I think it may also come down to how the data has to be laid out on the platter (maybe even tracking information) and firmware differences. Not an expert on this unfortunately.
For Seagate drives, those thin ones you are referring to are likely the Barracuda XL series. Sometimes they are just Barracuda drives (generic model).
Most of the thin ones have been Grenada drives and they likely have a model number like ST1000MD00x on them. Almost any drive that is ST1000DM, ST2000DM, and ST3000DM is a Grenada. 4TB drives like the ST4000DM000 have been a lombard. Funny thing is that the ST500DM series still parks their heads on the platters and not on a ramp like almost EVERY other drive out there these days.
I know this doesn't go full into detail as to why but it does at least show there is something going on XD. There is a LOT of speculation within the data recovery industry as to the differences but hard drive manufacturers keep these kinds of things close to their chest.