If this is a controlled environment you could use the following script (change database name):

SELECT file_id,

io_stall_write_ms,

io_stall,

num_of_writes

FROM sys.dm_io_virtual_file_stats(DB_ID('DATABASENAME'), 2);

http://technet.microsoft.com/en-us/library/ms190326.aspx

Run it before your transaction and then after it to collect the deltas.