Drives keep spinning down on waking PC up...how can I stop it?

akashj
akashj used Ask the Experts™
on
Hi all,

Probably a quick one - I put my machine on standby (PC not laptop) at night and wake it up in the morning.

Got 3 drives in there, 2 of them are RAID drives (Raid 0) and one is the main OS/software drive.

From what I can make out, when waking the PC up, I hear two drives which I assume are the RAID drives spin up and then straight away shut down/spin dow until they need to be accessed.

Is there any way to stop this?

Reason I ask is today the machine was in a state where it couldnt figure out what it wanted to do with the drives so while I could very slowly operate the machine, the HDD LED was continously on (usually indicating looking for  drives) and in reality the machine was not very usable.  On rebooting, everything was fine

Thanks
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Commented:
standby is a crapy mode, it allways gives problem.
microsoft never been able to fix it properly.
if you need the system to continue working overnight just keep it turned on and sitch off monitor.
if you don't need so,
and if you are using vista or seven just use freezing. it save system status to hd and it quickly reboot the system on startup.
it is quite slower than standby but it works better.
less crash and less proble once you pwer up the system again.
hope this help.
paolo
DavidPresident
Top Expert 2010
Commented:
NEVER NEVER NEVER NEVER configure a system that uses RAID LUNs put disks to sleep or itself to sleep.  You risk data corruption.   This insures that when system goes awake it doesn't think that a drive failed if one of the disks comes up a second later.   Even same make/model of HDD can vary a few seconds on a spin-up, so some error recovery logic kicks to figure out what is going on.  This is most likely what you are seeing.

Turn it off if you want to save electricity.  standby mode was simply never designed to work properly with RAID configs, and is more appropriate for laptops.
Lee OsborneSenior Infrastructure Engineer

Commented:
That's such an annoying thing! I have a few machines in my office, and if I'm in early, all I hear is machines spinning up and down and going in and out of standby!

Are you using Windows 7? Do you have Wake-on-LAN enabled? I 'think' it might be something to do with either WOL or the Hybrid Sleep mode.

Try disabling Hybrid sleep (Windows 7, maybe Vista too) -
Control Panel > Hardware & Sound > Power Options > Edit Plan Settings > Change advanced power settings > Sleep > Allow hybrid sleep - No.

Lee
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Commented:
Thanks all,
oloap88: Good points - I think because I always used Standby I didn't mind it but Hibernate could work I guess.

dlethe: I had no idea about this but makes perfect sense.
The two drives are identical.  Could there be partition corruption or just data?  Reason I ask is if there is a chance, I don't mind breaking the raid and rebuilding it just so I have a fresh start on it.  There is nothing on it at the moment anyway...

Would Hibernate be ok or would you def recommend shut down?  The only reason for standby was the speed and reason for shutdown is more for noise rather than electricity despite the juice it drinks!

LeeOsborneUK:
Good point, I forgot about the hybrid power.  It is W7 64bit Ultimate that is installed.

I think Ill see how the replies come in for the above and just shut it down I guess. If I can get WOL working then I don't mind as I can power it up from anywhere in the world

Commented:
hibernate, is aq shut down, but it simply save the content of RAM memory to the disk and recopy it to ram on reboot. it makes startup faster.
anyway after a few time i suggest to completly reboot system.
take a look to ready boos funtion.... with a usb hi speed flash drive you can afford a very quick setup!
thanks for apriciatig!
Lee OsborneSenior Infrastructure Engineer

Commented:
WOL should be easy enough to set in the BIOS. On our Dell's it is under Power Management > Remote Wake Up. It will vary on different manufacturers and models though.

Lee

Commented:
sorry for bad spelling..... i meant ready boost, that speeding up prefetch enable windows to speed up start up.
DavidPresident
Top Expert 2010

Commented:
Yes, you can have corruption, but no way of knowing where it is.  Realistically, any block that you ever wrote to has potential of being incorrect.  Since you have RAID0 and not RAID1, you have no protection against this.   Excuse me while I jump on my soapbox, but ... come on, RAID0?  What do you have against data integrity?   :)

Anyway, hibernation, sleep mode, all of this stuff is a major no-no. The code is just not designed for RAID.  Leave the computer on, or shut it down properly.  Those are the only two options you have if you value your data.
DavidPresident
Top Expert 2010

Commented:
... look at it this way, in the grand scheme of things, the most you will save is less than the amount you spend waiting if you miss a light going to work.   Factor in the time you spend chasing this issue down on EE, and your grief about the noise, and potential lost data, then you are just better off just turning the computer on at the start of the day.

Commented:
i never had problem with hibernation... its simplya way to save the wole content of ram to disk, i see no risk for the raid. anywai i agree that rai 0 is not reliable... are you sure you need these performance for a desktop? (hope is not a laptop!)
if so why not spend a hundred $ in another disk and a cheap raid card for raid 5?
otherwise back up every day is strongly advised specially cause i suppose it isn't a scsi/sas raid, bus ide/sata that fails like a charm... even if they are velociraptor....

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