Server updata error

I have two physical hard disk.

The first install OS X system.

The second as a Data hard disk for Server.

Today Update Server version 5.1.5.

There is a problem, and in the last version also exists.

Server data is stored in the path: '/Volumes/Data/Library/Server'.

My second hard disk name is 'Data'.

Server Update now can not find the path, and create another 'Data' folder in '/Volumes' below

Data hard disk name changed to 'Data 1'

Then on the tragedy.

Last problems, I deleted the newly created 'Data' folder, and then restart, it is normal.

This is really a serious problem for me.