HFS+ vs APFS: What Changed?

30 Haz 22:15

Comparing HFS+ to APFS is a lot like comparing NTFS in Windows to the old FAT32: while both are file systems, they differ significantly in performance and security. HFS+ (the old Mac standby) feels sluggish and inefficient by today’s standards. Fragmentation over time—especially with large files—can grind hard drives to a crawl. APFS, on the other hand, was built to keep up with the speed of SSDs and NVMe drives. For example, with copy operations (like rsync), APFS’s snapshot feature lets it complete file transfers almost instantly. While both theoretically allow unlimited storage, HFS+ struggles with inefficiencies at large volumes, which APFS handles better thanks to its space allocation. When it comes to data integrity, HFS+ does have metadata journaling, but APFS uses it more intelligently. Sudden shutdowns (like a forced Mac power-off) often lead to file loss in HFS+, while APFS’s copy-on-write structure keeps data safer. So if HFS+ is like parking an old car without engaging the emergency brake, APFS is like letting the car park itself automatically.

30 Haz 23:54

HFS+ (Hierarchical File System Plus) was Apple's classic file system used for Macs for decades. Apple switched to APFS (Apple File System) with macOS High Sierra due to severe performance bottlenecks in HFS+, even with small files. The key difference was that APFS was a cleaned-up version of HFS+'s 30 years of accumulated dust: improved structures for metadata operations, more efficient space allocation, and modern approaches that extend the lifespan of NAND cells in SSDs. Neither has a serious annual storage limit—theoretically, both support up to 8EB. However, in practice, APFS shines with its "Clone" and "Snapshots" systems, which manage dwindling disk space efficiently. For example, when copying a file, APFS doesn’t physically create a new copy—instead, it creates metadata-level references, making the process instant and nearly free, whereas HFS+ would waste significant space. Metadata journaling was also improved: APFS uses smarter journaling, recording only metadata changes and speeding up recovery after system crashes. The advantages of APFS are clear in space allocation and performance comparisons. With HFS+, the system slows down as the disk fills up, and deleted files leave behind fragmented "holes"—a situation known as fragmentation. APFS avoids this by continuously optimizing disk space through its metadata structures. For small files (like photo directories), APFS can be almost 2x faster—especially on SSDs—validating Apple’s innovative approach.

01 Tem 00:43

The biggest differences when switching from HFS+ to APFS can be summed up like this: APFS introduced fundamental changes to the file system, significantly boosting performance—especially with its SSD-optimized structure. I’ve been using APFS since 2017, and ever since macOS High Sierra, I’ve noticed a clear improvement in system responsiveness—faster file transfers and instant system reactions make the upgrade undeniable. No more dealing with HFS+’s sluggish metadata operations. APFS’s snapshot feature completely changed the recovery process. Last month, I accidentally deleted a file—normally a nightmare—but even without Time Machine integration, I easily reverted to a version from a few hours prior thanks to snapshots. That’s one of its most valuable features in my book. As for space allocation, APFS is designed to dynamically distribute free space to files, eliminating the fragmentation issues I used to face on older hard drives. I remember struggling with HFS+ where a 50GB disk would somehow fill up 20GB without warning—APFS doesn’t have that problem anymore.