Changing the default I/O timeout

This section describes how to change the default I/O timeout used by the Solaris iSCSI stack.

The sd_io_time variable sets the limit on how long an I/O can be outstanding before an error condition is returned. The Solaris default is 60 seconds (0x3c), but this variable is often set to 31 seconds (0x1f). To change the default timeout value, perform the following steps:

Open the file /etc/system.
Add this line to the end of the file:
```
set sd:sd_io_time = 0x3c
```
Reboot the machine.