Post by Martha Adams Post by Pascal Hambourg Post by Javier
You can buy an HD with a lower spinning speed (5400rpm instead of 7200rpm)
to decrease the power comsumption (at the cost of incresing access times).
And decreased sequential read/write speed.
Interesting responses here, especially re the smartctl resource. I'm
going to be looking in to that and may post here later re what I find.
But I notice that among responses here, none of those responds to my
Is there a rotary hd size vs lifetime dependence?
Besides anecdotal response, unless someone somewhere has done a
controlled study, you are unlikely to actually obtain a real answer.
And the one place that has done a real study (Backblaze) has studied
only 3.5 inch drive sizes, and so the results relate only to those
Post by Martha Adams
Surely somewhere, there's something about that around in cyberspace,
and I'd think Slackers here would be the best kind of people to have
I've not seen it. Does not mean it does not exist, but there's one
Now, think logically about the issue. What is it that 'wears out' in a
mechanical hard drive? The moving parts, obviously. More
specifically, the bearing surfaces in the bearings that allow for the
moving parts to actually move.
Now think about what factors contribute to the useful lifetime of a
1) quality of the bearing material
2) quality of manufacture of the bearing surfaces (i.e., smoothness
3) amount of lubricant provided to the bearing
4) quality of that lubricant
5) useful lifetime of that lubricant
Now, if one builds a large drive bearing, and uses, say, a low quality
lubricant, and builds a corresponding small drive bearing with a very
high quality lubricant, with all other factors being equal, one would
expect the small drive bearing to outlast the large drive one.
Reverse the lubricants above, and one would expect the large drive
bearing to outlast the small drive one.
Which comes to my point... There are enough variables involved in
quality of materials and workmanship that one can't say "X size drive
would always outlast Y size drive" because 'outlast' is determined by
how well built each one was. And "size of drive" has no relationship
to "quality of materials and workmanship" of bearings inside that
Post by Martha Adams
This is a growable topic, since it can lead into discussion of hardware
hd's vs SSDs, which surely interests many besides myself.
SSD's have a wholly different 'wear out' aspect that is unrelated to
the causes of failures in mechanical drives.