Time machine can't access the backup disk ''time machine backup'' on WD My Cloud, Time machine can't access the backup disk ''time machine backup'' on WD My Cloud?

Question

Every time I try to start my Mac's time Machine receive above message and it seems no possible to reopen/start properly the application.
What is error OSS 2?

Answer 1

WD Back up connection problems for Networked WD hard drive
“Connection failed”
“Can not find server”
“There was a problem connecting to the server “WD ShareSpace-Backup”.”
There may be two problems and associated solutions:
Read only access
It may be necessary to “create” a disk for the WD back up.
Change Read Only Access
The WD hard drive may automatically create a share for the Time Machine. This share appears in Finder as “WD_Backup”
If you open WD interface through a web browser and go to
Advanced Mode > Users>Folder Share permissions
You will see it as “back up” or similar.
As indicated by others click on the icon on the far left – a pencil and paper – and change the “NFS Access” from “Read Only” to “Full Access”
For Networked back up dives it may be necessary to “create” a disk for the WD back up.
The WD hard drive may automatically create a share for the Time Machine. This share appears in Finder as “WD_Backup”
The password is “backup”, although others have suggested it is sometimes “admin”
If when you open “Time Machine” and “Select Disk” time Machine says it “can not find…” or “can not connect to…” the server/disk it may be necessary to “create”, ”map”, or manually force your mac to connect to the “WD_Backup” folder share.
To do this
Open Finder
Select GO>Connect to Server
In the box at the top enter the IP address for your WD drive. You can find this in the top of your web browser or through your web browser interface with your WD Drive:
Advanced Mode >Network>LAN
The IP address will probably be in the format
“192.168.0.X” where “X” is a number particular to your network
In my case X used to be 2 but then changed to 3 – I don’t know why.
Click “Connect” and enter the Name and password
Name: “WD_Backup”
Password: “backup”
Click “registered user” and click “connect”
Click the “+” button to add the server to the list in the lower box.
Now open “Time Machine”
Click “Select Disk”
Your new “disk” / Folder share should appear in the list with the IP address below it thus:
WD_Backup
On “192.168.0.X”
As in the screen shot below.
Select this disk by clicking on the disk and then on “use disk”.
You should now be away………….