Using HDDScan-s command line builder and mountvol, I figured out the following two commands to unmount a hard drive (it only works with additional drives, like D:\), and spins it down, then mount it back later. If I don't unmount it first, sooner or later there is always a windows program in the background which queries it, but unmounting takes care about that.

Here is the code, if you are interested.
spindown.bat


spinup.bat


For the HDDScan part you can use the built in command line builder, for the mountvol, you can type mountvol d:\ /L to get the code.

Now my only problem is that using SpeenFan it triggers SMART values, which spins up the drive even if the partition is unmounted. I need to solve that, because except for that, this way if I ever buy a SSD I could just install OS to the SSD and only turn on those hard drives I need to use, meaning many TB's storage without any noise, when not needed.

Nice short tutorial.

"Now my only problem is that using SpeenFan it triggers SMART values, which spins up the drive even if the partition is unmounted. I need to solve that"

That's the easy part. Just disable temperature monitoring of selected hard drives. Temperature monitoring of HDDs is performed by reading SMART data. HDD's internal SMART logics read temperature sensor continuosly, but the system can only read the temperature data by requesting all SMART data... and some of that is written on the platters, requiring HDD to spin up on temperature polling of SpeedFan.

By default, SpeedFan polls all HDDs at 1 minute interval. Just click on "Configure", then "Temperatures", and then untick all HDDs you might occasionally want to spin down, and confirm all made changes by clicking "OK".

Constant HDD temperature monitoring isn't required after initial monitoring of temperatures after installation of new drive to the system. Even then, I don't bother to check the temperatures unless I've made something out of the ordinary (sandwiching, enclosing, wrapping in sound-insulation (which unfortunately usually insulates heat as well), or with systems with ultra-low-airflow.

This is great, I can't believe there aren't more replies to this. Can this also work with a raid 5 of 3 disks? It's so annoying having lots of storage being spun up all the time on the whim of background tasks in windows for no good reason.

Holy flirking schnit, it works! zsero, you're a star as far as I'm concerned.

I've been slightly infuriated that Vista keeps spinning up my data drive when it should be idle, but haven't known of any way to keep it shut down. It took me a little bit of googling to figure out what mountvol is and how to access it, but once I'd got that done, it worked like a charm.

I'm guessing that my data drive may still be using power, but it'll be minimal, so I'll be saving on my electric now, as well.

One question. Do I need to have HDDScan on my drive for this to work, or can I delete it now?

My most sincere thanks to you, sir

It's good to hear that it works!

Bad news for me is that it seems that my drives doesn't fully support the spindown feature (Seagate 7200.12), which means that when they spin up they will work, but start spinning down after 10 seconds of inactivity. A reboot solves the problem.

A good news for you might be that I found a more polished solution, called HotSwap!. It's a freeware program from Japan, which does it all, and it has a neat clickable interface on the system tray. It supports spindown, unmounting, everything.
http://mt-naka.com/hotswap/index_enu.htm

For HDDScan, you can put it in any folder, it doesn't need to be on the drive, and as far as I know it's portable (doesn't need to be installed, you can start it from any folder). But I would suggest for everyone to try out HotSwap! if it works on your system then it's a really cool one-click solution with no need for HDDScan or mountvol batch files.

EDIT: It seems that Windows 7's built in "turn off hard drives after ... min" works well on my drives, it must use a different command than what HDDScan and HotSwap! uses to turn off the drive.
Now my batch files are simply mountvol down - wait 1 minute - mountvol up, without the HDDScan part.

EDIT #2: Turning off HDD checkboxes doesn't work for me in SpeedFan, but I have found out that starting it with /NOSMARTSCAN option compeletely disables all SMART functions, hence it works very well for hard drives in a spindown.

What about mac os x? It would really be great with individual spindown settings on each disk. I've searched a bit and this is what I've found so far (applescript):



from http://forums.macnn.com/90/mac-os-x/396 ... -possible/

But an automatic shell script would be cooler, maybe something like this:
http://forums.freebsd.org/showthread.ph ... r#post5891

If it's possible to tweak for os x usage.

Wow, I have been looking for years to find a way to spin down my hard drive when im not using it! I can finally buy a SSD and not worry about space or anything, since half the time im just browsing the net, i dont really need all my other data.

Yes this post was useless but i still wanted to say thanks

I'm not sure I understand the need for this at this point in history?

I have a fairly old MB, circa 2005.
With the MB and WinXP and a BIOS setting, my HD powers down at a user selected time interval (mine is about 20 minutes I think.)

Am I missing something?

Yes, the problem is that something always spins it up, whether its explorer, or an AV. So essentially it wont power down and STAY powered down for very long.

On a side note, anybody having issues with this software? Specifically im having an issue where i spin down a drive and unmount, and after remounting it it keeps spinning down. I open my documents, it spins up, loads my documents, then spins right down again. Very annoying, very bad for the drive, very time consuming as well. any1 experience this?

I've just come across this wonderful program called revoSleep.
You can download it here
http://revosleep.realspooky.de/

There's a x64 and x86 version.
I have been using it all day long, without a problem in Windows 7 Pro x64.

Basicly just install it, select which drive you want to shut down (it only shows the first partition in each HDD) and click GO!. That's it.

Just be sure to run it as Administrator.

I have copied all the files I use most often to another partition on my OS HDD. So now I just basicly spin down my backup drive (which also stores most of my media) and run a weekly backup. I was looking for a program like this for a very long time. I hope it can be of use to some.

Great contributions people! Thanks.

Now the next step is to only use spare capacity in your SSD when you're around and get the SSD to offload automatically onto your mechanical HDD when you're not.

"If a drive makes a noise when there's no one around to hear it, does it make any sound?" Silence....

Check out my previous question - no detailed answers unfortunately, perhaps someone could contribute.

Thanks!

http://www.silentpcreview.com/forums/vi ... highlight=

can you upload the program? the d/l doesn't work

I googled it and found it, it works great!

Maybe they got a huge hosting bill, because of the soundtrack on the page . I got google results for the 64-bit zip, but not for the 32-bit:
http://www.google.co.uk/search?sourceid ... TA_x64.rar

But they have a board, I'm sure if you post there someone will send it to you. I would be good to collect it and upload to ifile.it, for example.

i have an iram card 4gb and a samsung 250gb and i can turn off the samsung hd when i read or surf the web. it works great.

Sorry for bumping up this old thread. While the batch scripts work great for a few minutes, the unmounted drives still spin up after 5-10 minutes. I'm using Windows 7 -- has anyone encountered similar issues?

I don't see the point to begin with. Isn't Windows own power management sufficient, spinning down idle hard drives after some configurable number of minutes?

Not really, windows power management is pretty disappointing, random drive spin ups (MFT/ tracking.log) and to mention installers and similar programs spins up all drives when they check for free space. Noisewise really annoying also with the increased wait time to be allowed to continue when all drives spins up. Not possible to fix otherwise than these scripts, which are only useful if you want to use the drives only locally.

You're not going to avoid this by shutting down drives manually. They'll still spin up when accessed.

33, what these scripts do is they unmount the drives. They won't be able to be accessed. Their drive letter will disappear from windows, until mounted back. Only SMART utilities can access them this way.

Has anyone found a way to implement this with a simple powershell script for Windows 7? Just pop a file on the Desktop and execute whenever would be ideal.