SSD Wear Leveling and Partitions

now i see it

macrumors 603
Original poster
Jan 2, 2002
5,363
10,840
If an SSD was partitioned in two, with a different bootable OS on each partition, will the SSD wear level on the entire drive if only always booted on the same partition, or will wear leveling be confined to only that booted partition?

This isn't a Sierra question per se, but a Mac partition & SSD function question I guess.
 

keysofanxiety

macrumors G3
Nov 23, 2011
9,536
25,263
I wouldn't worry. Modern SSDs can withstand a solid 50GBs worth of data written daily for 5 years straight without failing.

That's not to say SSDs don't fail, of course. But if they do, it's most likely due to something else.

Basically, don't worry! Just use your computer as you would expect to. Make backups of the stuff you can't afford to lose, naturally. But no need for concern. :)
 

Tech198

macrumors G5
Mar 21, 2011
14,946
1,933
Australia, Perth
SSD's write to any part of the drive.... just like spinning hard drives, do,, Its only the OS that cares about the partition being used..
 

argon3030

macrumors newbie
Nov 13, 2016
1
0
United States of America
I wouldn't worry. Modern SSDs can withstand a solid 50GBs worth of data written daily for 5 years straight without failing.

That's not to say SSDs don't fail, of course. But if they do, it's most likely due to something else.

Basically, don't worry! Just use your computer as you would expect to. Make backups of the stuff you can't afford to lose, naturally. But no need for concern. :)
Yes, regular backups are a must, no matter what. But 50 GB per day is not as much as it sounds, particularly if you leave the computer running 24/7. Some recent studies showed Firefox and Chrome can write 20+ GB per day on their own, even with only casual light web browsing. It's unfortunate that most consumer SSD's are rated for such low write durability.
 
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