Although not discussed in today's keynote, Apple is adding a new "universal" filesystem to iOS and macOS. Apple File System (APFS) will likely replace HFS+ as the default filesystem for Macintosh computers, iPads, and iPhones and brings a wealth of modern features. But judging from the initial developer documentation, that's not going to happen for a few more years. And there's … [Read more...] about macOS Sierra Includes a New Apple File System, APFS
Since most MacBooks are SSD-only, one would think Apple would be careful about leaving junk around on the drive. But many people are finding 5 GB wasted for a years-old leftover Mac OS X install image! Here's how to reclaim that space if you're missing it... Lost+Found In a brief DuckDuckGo search, I discovered that it's fairly common for a Mac OS X upgrade to leave … [Read more...] about Check Your Mac’s Drive and Reclaim 5 GB of Wasted Space!
Hard disk drives keep getting bigger, meaning capacity just keeps getting cheaper. But storage capacity is like money: The more you have, the more you use. And this growth in capacity means that data is at risk from a very old nemesis: Unrecoverable Read Errors (URE). Let's get one thing out of the way from the start: The only thing protecting your data from corruption … [Read more...] about Why Big Disk Drives Require Data Integrity Checking
Why do some data storage solutions perform better than others? What tradeoffs are made for economy and how do they affect the system as a whole? These questions can be puzzling, but there are core truths that are difficult to avoid. Mechanical disk drives can only move a certain amount of data. RAM caching can improve performance, but only until it runs out. I/O channels can be … [Read more...] about The Four Horsemen of Storage System Performance: Get Smart
Last week, at WWDC, Apple introduced many of the features found in their next operating system, OS X “Lion”. At that time, I posted an article about the storage features found in this new release, including integrated revision control, a major update to the FileVault encryption package, and additional enterprise storage protocol support. But, like Snow Leopard, Lion still lacks … [Read more...] about Three Key Storage Features Missing in Mac OS X “Lion”