Backup fails to write to local storage

Backup cannot write to my local storage (SD Card). It seems to be a hassio supervisor timeout, but I don’t know why it occurs. My SD card is new and uses the A2 type, so it’s in good shape. The backups write to the cloud storage fine. Any idea what’s the cause and how to fix?

The error log gives the following info:


Logger: homeassistant.components.backup
Source: components/backup/manager.py:588
integration: Backup ([documentation](https://rc.home-assistant.io/integrations/backup), [issues](https://github.com/home-assistant/core/issues?q=is%3Aissue+is%3Aopen+label%3A%22integration%3A+backup%22))
First occurred: 5:18:21 AM (1 occurrence)
Last logged: 5:18:21 AM

Unexpected error for hassio.local: Timeout connecting to Supervisor

Traceback (most recent call last): File "/usr/local/lib/python3.13/site-
packages/aiohttp/client_reqrep.py", line 532, in start message, payload = await protocol.read() # type: ignore[union-attr] 
^^^^^^^^^^^^^^^^^^^^^ File "/usr/local/lib/python3.13/site-packages/aiohttp/streams.py",
 line 672, in read await self._waiter asyncio.exceptions.CancelledError

How big is your SD card?
How much free space do you have on it?
Have you ever managed to back up to it successfully before today?

It’s 64GB with over 32GB free. Worked fine for years, then it’s been intermittent for a couple months. It might have something to do with supervisor updates. Hard to say though.

I’m confused. Is it a new card or not?

When I started having problems, I replaced my sdcard to see if it was the problem. Unfortunately it did not help. Now I have another SDCard to misplace. lol