- #Direct attached raid storage for the mac 2018 update
- #Direct attached raid storage for the mac 2018 full
For most RAID users, that is woefully inadequate. Both should work fully with non-SSD APFS drives.ĪppleRAID doesn’t support APFS, although Apple claims that you can combine APFS volumes with Apple RAID volumes to support RAID levels 0 and 1.
#Direct attached raid storage for the mac 2018 full
If you prefer a volume cloning and backup tool, then SuperDuper! version 3.1.4 claims full support for APFS, as does Carbon Copy Cloner 5. They cannot be used for Time Machine backups anyway. Networked drives which are formatted in APFS are not accessible by AFP, though, and can only be accessed using SMB or NFS. At present, AFP is deprecated but still works for drives which are not formatted in APFS. Whatever the type of drive, if it is to be used for Time Machine backups, it must be in HFS+ format for the foreseeable future. As far as I can tell, Apple has given no indication as to whether the current version of Time Machine will ever support APFS, or what its solution will eventually be.
Time Machine backup drives cannot be in APFS format, but must either be in Journalled HFS+, or networked via SMB. There are four major limitations to the use of APFS. So, as of High Sierra 10.13.3, APFS is the standard file system for SSDs which are only used by High Sierra systems, “can” be used on hard disks which are only used by High Sierra systems, but remains unsupported on Fusion Drives. While APFS is optimized for the Flash/SSD storage used in recent Mac computers, it can also be used with older systems with traditional hard disk drives (HDD) and external, direct-attached storage. Help for High Sierra’s Disk Utility mirrors the developer FAQ, advising that It gives no advice as to which to choose when formatting a hard disk, although it hints heavily that APFS is intended mainly for SSDs. It states that the installation of High Sierra results in the automatic conversion of SSDs to APFS, and that Fusion Drives and hard disks aren’t converted. Among them, this article provides advice on choosing the most appropriate format for disks. There are other Apple support documents which cover APFS for users. No mention is now made of Fusion Drives in that FAQ. macOS High Sierra supports Apple File System for both bootable and data volumes. andĬan I boot macOS High Sierra from an APFS-formatted hard disk? However, on 5 February 2018, Apple updated its developer documentation to state that:Īpple File System is optimized for Flash/SSD storage, but can also be used with traditional hard disk drives (HDD) and external, direct-attached storage.
I have not come across any release notes which have claimed any change in the storage supported by APFS.
#Direct attached raid storage for the mac 2018 update
There were reports at the time that Apple staff stated that such support would be provided in a future update to High Sierra, but I did not see any written release from Apple making that clear, nor was there any promised timescale.ĪPFS has been updated several times since 25 September, the last being in the 10.13.3 update of 23 January 2018. However, when High Sierra 10.13 was released on 25 September 2017, not only did it not convert Fusion Drives to APFS, but Apple made it clear that APFS was not then supported on Fusion Drives. There was no doubt at that time that APFS was intended to replace HFS+ as the standard file system across hard disks, Fusion Drives, and SSDs. In his presentation to WWDC in June 2017, Pavel Sokolov, a File System Manager, stated unequivocally that APFS was the official replacement for HFS+, Fusion Drives were fully supported as boot volumes, APFS stored all its metadata on the SSD part of a Fusion Drive, APFS automatically defragments on hard disks, hard disks were not automatically converted from HFS+ to APFS during High Sierra installation, and performance improvements were still being sought. This article tries to clarify APFS support beyond SSDs.ĪPFS has worked on non-SSD storage since May-June 2017. Although I stated that it is not, that is neither completely correct, nor competely wrong. Yesterday’s article about selecting hard disks raised questions about whether APFS is now officially supported on them.
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