BACKUPIO and BACKUPBUFFER wait types question

Hi All,

Im checking wait stats on a SQL 2008 Standard server, and the top wait types are BACKUPIO and BACKUPBUFFER (24 and 23% respectively). I am backing up about 30GB to a network share and it takes on average 3-4 hours!! (yeah, not good).

My question is, from BOL and other articles, i've read that BACKUPIO and BACKUPBUFFER are usually if you backup to tape which i dont. Why am i seeing these wait stats? Is it because these are also recorded if im backing up over a network share or something like that?

Btw the next wait type that is high usage is ASYNC_IO_COMPLETION.

Thanks in advance.