Hard Drive upgrade capacity limit

"The 10 TB WD that I tried failed. In that generation Airport. Any attempt to erase the drive caused an error.

06-14-2019 10:12:00 Local0.Warning 192.168.10.6 Jun 14 10:11:58 apple-10tb storage: Volume dk0 on Disk sd0 (WDC WD100EMAZ-00WJTA0 XXXXXXXX 83.H0A83) failed to mount (256).

The drive always “needs repair” and the Erase function fails.

06-14-2019 09:55:48 Local0.Warning 192.168.10.6 Jun 14 09:55:47 apple-10tb storage: Volume dk0 on Disk sd0 (WDC WD100EMAZ-00WJTA0 XXXXXXXX 83.H0A83) needs repair (256).

On the time machine side it acts like it might work until it throws a

The operation couldn’t be completed. (OSStatus error 2.)

or

The operation couldn’t be completed. (OSStatus error 64.)

EDIT! The drive that works depends on the exact model of time capsule. The A1302 takes a 10TB drive but the A1355 does not - I don’t know anything about the A1409 - I mistakenly thought they were identical when I wrote this answer. The TIme Capsule drive is not designed to be upgraded and the firmware may or may not support specific drives, regardless of capacity!

More details: https://lab.remaker.com/2019/06/upgradin..."

You can replace the Hard Drive with a 3.5" drive, but a 10TB is sold at a premium for its density +$500. So technically yes, but I wouldn't recommend it. The rubber pad removal can get messy since its is glued on. If you are adamant about changing out the drive, maybe try the 8TB from Seagate ($235ish).

"I would definitely keep to 8TB as max size.

I tried with Toshiba Enterprise and that worked fine.. it even spins down.

sd0 at scsibus0 target 0 lun 0: <TOSHIBA, MG05ACA800E, GX0R> disk fixed

sd0: fabricating a geometry

sd0: 7452 GB, 7630885 cyl, 64 head, 32 sec, 512 bytes/sect x 15628053168 sectors

sd0: fabricating a geometry

sd0: async, 8-bit transfers, tagged queueing

boot device: <unknown>

root on md0a dumps on md0b

root file system type: ffs

WARNING: clock gained 30 days

WARNING: CHECK AND RESET THE DATE!

mgi_init: ifp=0xc252c03c, sc=0xc252c000

mgi_init: ifp=0xc25d303c, sc=0xc25d3000

mgi_init: ifp=0xc252c03c, sc=0xc252c000

dk0 at sd0: APconfig

dk0: 2097152 512-byte sectors at 40, type: hfs

dk1 at sd0: APswap

dk1: 2097152 512-byte sectors at 2097192, type: hfs

dk2 at sd0: APdata

dk2: 15623858784 512-byte sectors at 4194344, type: hfs

hfs: Initializing the journal (joffset 0xa000 sz 0x800000)...

hfs: Initializing the journal (joffset 0xa000 sz 0x800000)...

hfs: Initializing the journal (joffset 0xe8d3000 sz 0x20000000)...

jnl: journal start/end pointers reset! (jnl 0xc28c2c00; s 0x200 e 0x200)"

Some years ago I replaced the 3T drive that came in my A1409 with a 6T NAS drive. No problems. I don’t recall where I read it, but information out at that time stated this was the maximum the unit would work with.