Is it possible to have the transaction log file write to a disk on a remote machine? For the SQL server transaction log file, it is possible to set its target file to a disk on a remote machine?  

I am working on a BI project.  In its current iteration, when the data warehouse loading processes run, the transaction log can balloon (>100 GB) in size before it has a chance to truncate.  There isn't any room to add more disks to this server, and future data loading operations will involve substantially more data and so I don't think there will be enough disk space for the log.  But we have a development server in the same rack with 900+ GB free and I was thinking we could use that free disk space so that bigger loads will work.
It is supported to have database files on network share, but Its inviting a disaster as any network blip might corrupt your database.


  Microsoft recommends that you store database files either on Local Disk or on Storage Area Networks (SANs).


You have to tune your data warehouse loading process. There are many parameters that can be tuned to have minimally logged operations and fast loading of data in sql server. e.g.


Trace Flag 610 - controls minimally logged inserts into indexed tables. 
I have listed few items in this answer.


Also, if you want to be proactive, then create an alert for Transaction log full, so you get notified when the log is about to get filled up.

Read up on :


The Data Loading Performance Guide
Load 1TB in less than 1 hour