After an updated release of Intel's Matrix Storage Manager [v.126.96.36.1993] and chipset drivers for Windows, you experience unexpected system timeouts, lockups, pausing, or freezing. The following event is recorded in the System event log:
The device, \Device\Ide\iaStor0, did not respond within the timeout period.
The issue is the result of Aggressive Link State Power Management (ALPM) on the PCI-Express bus negotiating a lower power state for the link between the controller and disk when there is no activity. When ALPM works, disk requests are queued, the serial link revived, and the queued requests are sent to the relevant disk; this requires a disk that supports ALPM.
Searching for a solution yielded a number of possibilities.
Setting the value of:
as discussed by Derek Seaman did not resolve my issue.
as suggested by Paul's Computer Service was also ineffective. At the time I was running the latest set of drivers for my platform. Caveat emptor: the solution I outlined in this article worked for me.