FileNet: obtaining available space on a Storage Area

A particular Object Store, in my FileNet environement, is using a NAS as a Storage Area (this is a typical configuration). By the way, I do not have access to that NAS (the team that maintains the storage is remotely distant from me) and I want to know - in a particular moment - the available space. If the NAS will be almost saturated, I wish to know it in time, in order to make a request for adding free space on it.

If I inspect the Storage Area's properties from FEM, I obtain this:

As you can see, it shows no free bytes, but it is not true. It is, by the way, precise in the order of file count.

I also accessed the section "Storage Areas" of http://server:port/P8CE/Health, but it just shows the status of them:

Is there a way to know the available space of a Storage Area, via FEM or APIs?

You can not get the size or free space of the underlying storage device in FileNet. But you can do either of the following two

Set "Maximum size" parameter of the Storage area

Set the "Maximum size" parameter of the Storage Area to the allocated/maximum available space on the NAS.

After having done, you can check and calculate the available free space using the API. To get the values, something along the line of the following code snippet should do the trick

StorageAreaSet storageAreaSet = filenetConnection.getObjectStore().get_StorageAreas();

  Iterator<StorageArea> iter = storageAreaSet.iterator();
  while(iter.hasNext()){

    StorageArea sa = iter.next();
    System.out.printf("Storage Area %s is %s uses %f KB of %f KB available\n", sa.get_DisplayName(), sa.get_ResourceStatus().toString(), sa.get_ContentElementKBytes(), sa.get_MaximumSizeKBytes());

  }

Use a monitoring software

What we usually do is, monitor the free space of our storage devices using our monitoring solution. The monitoring solution sends an alarm if the available storage drops below a certain percentage