The "power on hours" can't be correct. This Mac is running almost the whole day since six months.
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ssd swap - high usage of Terabytes Written
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I don’t know if I could use a computer without Spotlight!
I’ll have to get used to the changes, as I am one of the (apparently) few people who use Launchpad.
Why? How do you find anything?
The improvements to Spotlight are actually some of the most interesting and useful functionality in the new OS, IMO.
I've always disabled Spotlight. As to how I find stuff? I organize files so I know where they are.
One other thing if you're worried about TBW is to use an attached SSD. I have a 4 TB Samsung 990 Pro in an OWC 1M2 enclosure and it gets about 3,100 read/write and I put the vast majority of my files on it. If and when it goes, I'll just throw in another drive. The enclosure was $120 and the drive was about $300.
An Update from my 2021 16' MBP M1 Max with 4TB SSD - used every day heavily all day long (since it was bought) (I put it to sleep at night):
An update on my 16' MBP... Now 98% life percentage left!!! Dropped a %!
Data units written have fallen significantly vs when I first had the laptop.
Data units written have fallen significantly vs when I first had the laptop.
I'd guess that if you had 1TB drive, there would be 8% loss now?
Math is not something I'm good at. That is a great question.
I ran this through an LLM and it said that usually 1TB SSDs have significantly less TBWs than 4TB SSDs so while 92% is reasonable it would likely be less.
Very cool. I did not think of this till you mentioned it. Thank you
It’s typically relational, for example (via Samsung):
Warranty
MZ-V9P1T0BW (1TB)
5-year or 600 TBW limited warrantyMZ-V9P2T0BW (2TB)
5-year or 1200 TBW limited warrantyMZ-V9P4T0BW (4TB)
5-year or 2400 TBW limited warranty
If we do some very simple math...
Estimating one-percent per 100 TBW, you’ll have worn the drive to 50% after 5 PBW (that’s five petabytes written). If we quarter that (i.e., divide by four), that’s 50% at 1.25 PBW. I seriously doubt the vast majority of users have a drive write a petabyte of data in the system’s realistically usable lifespan, or even get close.
This is why I'm a fan of doing most stuff on an external. I don't worry that much about the internal but doing more on the internal means you just replace it when it's worn out. I still do a lot of stuff on my iMac Pro including video editing but I can replace the internal SSD on it. I understand that you can do this on the Mini and Studio now too. I don't think that I'll find out as I mainly use an external but it's nice to know that it's possible.
Indeed. I’m not worried about the internal storage but using external just takes away any consideration as they’re fairly easy to swap. Even for video editing, a USB4 drive is plenty fast. My OWC 1M2’s have up to 3.8 GB/s read and write.
Yep, I have external NVME drives for my TimeMachine and Parallels backups/instances. You can get super cheap ones on sale (I rarely am north of 300GB on those) and they're super super fast. Transfer 100+GB in less than a few mins.
So if I'm doing math right (I am terrible ... at math)...
2% life used of my 4TB SSD with 127 TB written means my 4TB Apple SSD has an estimated 6930 TBW?
2% life used of my 4TB SSD with 127 TB written means my 4TB Apple SSD has an estimated 6930 TBW?
Lets assume that internal ssd has TBW of 2400.
Ans you have used 2% of that.
Meaning that you have written 48 TB.
Now, if the TBW is 600, how many percents that would be?
Or do you think that "wear" is something else than what portion of TBW is already written?
The whole reason for this thread is, that there is something really much happening under the OS's hood.
Pretty much nobody writes thousands or even hundreds of terabytes of meaningful data in their whole life.
But if OS is writing swap (or something else) for 1MB per second, that means it has written in those 3600 (in that pic) hours 13 TB. This is not an amazing amount of the whole TBW, but remember times when TBW was a fraction of that?
I have weared out, back in the day, two ssd's which were part of (DIY) Fusion drive. Back then I estimated that over 90% of writes has to do something with OS or filesystem.
127/0,02= 6350 TBW.
It might be that.
Or something else.
Because the wear can be something else and Apple doesn't want to tell us.
How long you have had that MBP?
Good point.
Purchased April 2022. Used every single day all day long since then (except on vacations/etc).
And heavy use cuz of parallels running a W11 instance with C# and oracle programming.AlDente keeping the battery happy
Best laptop I've ever owned.
