4 ms·
> most of the features of ZFS don't add any value to a Mac with a single internal drive My favorites: * Data reliability (checksumming, etc...) * Comp
by dlsspy 16y ago
> most of the features of ZFS don't add any value to a Mac with a single internal drive
My favorites:
* Data reliability (checksumming, etc...)
* Compression
* Lots and lots of undo
* Including undoing entire OS upgrades
* Cheap and quick partitioning
* Easy disk replacements
I've made use of all of these things this week. It happens that the disk I replaced is part of a two-disk flat pool, but old disk out, larger new disk in and zero downtime is awesome.
- lloeki 16y agoI don't recall the details of a nice article I read a few years ago mainly about RAM and ECC but as storage size grows, the probability for any one of its bits to flick "by itself" raises. Data reliability and self-correction becomes an essential part of storage. I've played a bit with ZFS myself and really enjoyed it. It's like the sum of everything we learned about filesystems and storage and previously used to shoehorn into various historical filesystems, only this time it's a clean and simple implementation.
- tsuraan 16y agoI think the term you're looking for might be "adjacent track erasure", which is the idea that the magnetic fields of adjacent tracks on a hard drive interfere, so if one track is written frequently (such as a file system metadata block), the tracks that are physicially adjacent on disk may eventually have some bits flip. It's hard to find concrete numbers on whether this happens, or how often, but it's something that people are getting more concerned with on the higher-density drives that are being made now. Of course, ZFS makes the issue pretty much moot.