Slow Drive after sleep

Mick-1965 · 11 Nov 2009 at 11:04

Got a strange problem with my 74GB Raptor. The other drives in the pc are not affected

I'm running Win 7 and after I've put the pc to sleep then awoken it again the read speed is halved.
If I shut down and reboot every thing is back to normal....until the pc sleeps again.

Before sleep

After waking from sleep....well until a reboot

I've updated to the latest Intel Matrix storage drivers which makes no difference apart from it wakes a lot quicker.

Anyone with any idea's I'd be much obliged.

Mick-1965 · 11 Nov 2009 at 23:34

Its a weird one.

Even the windows experience index drops from 5.7 to 4.6 after awakening from sleep

idea's ???

AbsenceJam · 12 Nov 2009 at 00:31

In device manager does the controller properties show as being in a lower DMA mode after waking?
Try changing to IDE mode if you're using AHCI to see if it makes a difference.

Mick-1965 · 12 Nov 2009 at 10:47

That's a good point, but.... there are no details in the device manager>controller options to find out what DMA mode its running in. Not even the Intel Matrix storage manager tells you.
Its running in RAID mode so any non RAID disks automatically default to AHCI.
I've got 2*250 Gb in RAID 0 , 1*250GB, and the 74GB Raptor.
Its only the raptor that does it.

AbsenceJam · 12 Nov 2009 at 18:33

If you hotswap the Raptor (or is it your OS disk?) and then reconnect is there the same issue.

Mick-1965 · 12 Nov 2009 at 21:22

The raptor is the OS drive
If I restart it fixes it, also if I hibernate the pc it fixes it.

Mick-1965 · 12 Nov 2009 at 21:52

Is there an app I can run that will read the DMA status for each drive ?

AbsenceJam · 13 Nov 2009 at 00:33

Mick-1965 said:
Is there an app I can run that will read the DMA status for each drive ?

Not when using AHCI/RAID I don't think, but Everest might.

Mick-1965 · 13 Nov 2009 at 13:51

Moved the Raptor to the JMicron controller.
Problem solved.
Musn't have liked the Intel controller after sleeping for some reason.