TM challenges

[ic2]

Aplogies if this has been posted before but a search threw nothing up.

Running Big Sur

I am running Carbon CC on an external disk (not SSD) and have formatted it as Mac OS Extended (Journaled) and when i run the back up it keeps the disk as this and run perfectly. I also have a G-Drive raid array (2x2TB) and if i format it to Mac OS Extended (Journaled) then go into TM preferences and select this disk it prepares it for TM but changes it to APFS which i understand is *not* optimal for mechanical drives; only SSD.

Any help as to how i can keep it as Mac OS Extended (Journaled)? detecting the container in disk utility and formatting to that way still does not help - plus its saying over 12 hrs for the initial TM backup?

Regards

 

[chscag]

I'm running Time Machine from Big Sur to an external spinning hard drive, but it's formatted to HFS+. Time Machine did not try to format it as APFS. Perhaps Time Machine did that because it's a RAID array but I don't understand why since spinner type drives are not optimized for APFS.

Both of my CCC backup drives are SSDs and they are formatted to APFS.

Your internal hard drive regardless of whether it's an SSD or spinner has been formatted to APFS since Mojave.

 

[ic2]

It was HFS+ then big sur sort of borked it. I have reformatted it again to see if it helps but apparently not, TM not reporting the initial back up as 18hrs +..LOL

 

[chscag]

It was HFS+ then big sur sort of borked it. I have reformatted it again to see if it helps but apparently not, TM not reporting the initial back up as 18hrs +..LOL

Try backing up to a single external hard drive formatted to HFS+ if you have one handy. I think Time Machine doesn't like your RAID array.

 

[David Hassholehoff]

While APFS is spcifically built for solid state devices, HFS+ is a terrible file system.

I have all my disks (mechanical as well) formatted as either APFS or ZFS (for those in my BSD machines). APFS is a modern system that can easily be snapshotted and is resistant to data degradation.

 

[snakes-]

apfs is ok i have 2 mechanical data drives with apfs and 3 usb sticks that works fine.

 

[DimaVR]

Anything via usb is fine anything via wifi or over network as NAS for backup is slow and Brocken lately