Write commit failure while loading data to windows vms

Install couchbase server 2.0.0-1427 on one windows server 2008 R2 64bit
Run view test py-view.conf
During the test, I see a lot of error
[2012-07-10 15:49:33,376] - [viewtests:698] ERROR - unable to set item to bucket default, error [Errno 32] Broken pipe
[2012-07-10 15:49:33,987] - [viewtests:698] ERROR - unable to set item to bucket default, error [Errno 32] Broken pipe
[2012-07-10 15:49:34,137] - [viewtests:698] ERROR - unable to set item to bucket default, error [Errno 32] Broken pipe
[2012-07-10 15:49:34,166] - [viewtests:698] ERROR - unable to set item to bucket default, error [Errno 32] Broken pipe
Exception in thread Thread-16:
Traceback (most recent call last):
File "/opt/python2.7/lib/python2.7/threading.py", line 552, in __bootstrap_inner
self.run()
File "/opt/python2.7/lib/python2.7/threading.py", line 505, in run
self._target(*self.args, **self._kwargs)
File "pytests/viewtests.py", line 702, in _insert_data_till_stopped
self.fail("inserts timeout after

seconds".format(ex))
File "/opt/python2.7/lib/python2.7/unittest/case.py", line 408, in fail
raise self.failureException(msg)
AssertionError: inserts timeout after [Errno 32] Broken pipe seconds

Open broswer, see popup alert: "Write Commit Failure. Disk write failed for item in Bucket "default""

-t viewtests.ViewBasicTests.test_load_data_get_view_x_mins_y_design_docs,num-design-docs=20,load-time=10,run-view-time=1,num-tries=100