Specify amount of space on network backup?

Is there any way to specify how much space Time Machine will use in a network AFP volume?
The problem I see is that if the sparseimage keeps growing, the volume it's backing up to will ultimately become full, which is not necessarily ideal in many situations......

Time Machine will use up as much space as it needs until there's no free space left. When it finds this situation it will inform you that the backup device is full and has insufficient space to backup. It wioll attempt to scavenge space from the backups starting with the oldest ones first. If this scavenging results in insufficient space you will have to move to using another backup volume.

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