Use the Internet Information Services Global counters described in Table F.17 through Table F.20 to monitor FTP, SMTP, and NNTP services as a whole. You cannot configure these counters to monitor individual sites. This differs from IIS 5.x, in which global counters monitored the WWW and FTP services.
If the service that you want to monitor (FTP, SMTP, or NNTP) is not installed or is not running, the counters return a zero value.
Table F.17 lists the Async I/O counters that are no longer valid for the Internet Information Services Global performance object. The value of these counters is always zero.
Table F.17. Async I/O Counters
Measured Async I/O Bandwidth Usage
Total Blocked Async I/O Requests ...