On 14/11/2024 20:33, Dale wrote:
It's one thing that kinda gets on my nerves about SMR. It seems, sounds, like they tried to hide it from people to make money. Thing is, as some learned, they don't do well in a RAID and some other situations. Heck, they do OK reading but when writing, they can get real slow when writing a lot of data. Then you have to wait until it gets done redoing things so that it is complete.
Incidentally, when I looked up HAMR (I didn't know what it was) it's touted as making SMR obsolete. I can see why ...
And dual actuator? I would have thought that would be good for SMR drives. Not that I have a clue how they work internally, but I would have thought it made sense to have zones and a streaming log-structured layout. So when the user is using it, you're filling up the zones, and then when the drive has "free time", it takes a full zone that has the largest "freed/dead space" and streams it to the current zone, one actuator to read and one to write. Indeed, it could possibly do that while the drive is being used ...
Cheers, Wol
