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Hibernation and SSD drives?

post #1 of 7
Thread Starter 
Hi,

I put my PC (sig) often in hibernation mode with the application "Simple Shutdown Timer", since Windows 7 doesn't seem to offer hibernation for desktop PCs. The same OS has hibernation on my laptop. I have read that when you use hibernation mode a lot it becomes necessary to defragment your OS-drive regularly.

My Windows-drive is a SSD though and SSDs shouldn't be defragmented as far as I know. So I would like to know if hibernation has effects on or may even damage an SSD.

Thanks.
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post #2 of 7
Quote:
Originally Posted by 12Honk34 View Post

Hi,

I put my PC (sig) often in hibernation mode with the application "Simple Shutdown Timer", since Windows 7 doesn't seem to offer hibernation for desktop PCs. The same OS has hibernation on my laptop. I have read that when you use hibernation mode a lot it becomes necessary to defragment your OS-drive regularly.

My Windows-drive is a SSD though and SSDs shouldn't be defragmented as far as I know. So I would like to know if hibernation has effects on or may even damage an SSD.

Thanks.

 

Hibernation is available for Desktop PCs.

 

Anyway, the reason why it's good to defrag hard drives more often when using Hibernation every day is that there's a special Hibernation File that is used to save where you left off.  I have come to assume that every time Windows starts, it does a very quick check to see if it has to boot from the Hibernation file.  If not, then it starts fresh.  The Hibernation file can be large too because it needs to be able to save everything, including the contents of your memory.  Also, one file is not just one thing sitting on/in a drive:  it's a bunch of fragments of data.  When going into Hibernation, the fragments that make up the Hibernation File become less and less organized and more and more in need of being defragged (organized neatly) because of all of the writing that is done into the Hibernation file.

 

With solid state drives, the fragments do not need to be organized neatly.  The onboard controller on solid state drives handles the fragments in the way that it has been designed to handle them, and this is generally always in a fragmented state/  This mostly helps with wear-leveling.  Even if you try to defrag a solid state drive, its onboard controller is still going to organize the fragments in the way that it has been programmed to while making the defragging software 'think' that the defragging is being done as requested.  So, defragging doesn't actually defrag the files at all because the SSD's onboard controller keeps them fragmented on purpose because it needs them to be that way.  So really, defragging a solid state drive is harmless in the short term and a complete waste of time.  :)

 

So in other words, a solid state drive's onboard controller is going to handle the fragments in the way that it has been programmed to regardless of what it is being told to do with them.  It will always "lie" in order to satisfy the request so that there are no software errors.

 

Don't worry about the daily writes onto the solid state drive from using Hibernation every day though.  You'd have to put some real effort into wearing it out before you noticed it, and Hibernating on a daily basis isn't going to do it.  That's nothing.  ;)

 

However, I do have 2 reasons to not use Hibernation:

 

  1. My computer takes 30 seconds to start up from a powered-off state
  2. I want to give Windows a restart every day, so shutting it down when I'm done takes care of that.

 

 

I can't quite remember how to make Hibernation available in Windows 7 for desktop PCs, but I remember it being easy.  I would love to re-enable Hibernation on my system, but I don't have enough free space on my solid state drive.  So hey, this is a 3rd reason for me to keep Hibernation disabled:  more drive space!

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post #3 of 7
Thread Starter 
Thanks so much. My SSD is alway about 90% full and I don't even know what takes up all that space. Windows 7 by itself isn't that large. I have a lot of stuff on my dektop though. But besides that I have no clue what that space is needed for. I assume an almost full OS-drive can slow down the system?

The hibernation file is erased after each reboot or are they all stored somewhere? If it is erased I assume the space it uses is freed up after the reboot?
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post #4 of 7
Thread Starter 
Thanks so much. My SSD is alway about 90% full and I don't even know what takes up all that space. Windows 7 by itself isn't that large. I have a lot of stuff on my dektop though. But besides that I have no clue what that space is needed for. I assume an almost full OS-drive can slow down the system?

The hibernation file is erased after each reboot or are they all stored somewhere? If it is erased I assume the space it uses is freed up after the reboot?
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Burger with Fries
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post #5 of 7
When you enable Hibernation, you lose the same amount of space as your RAM. You've got 8GB of RAM , so 8GB is going to be taken for hibernation. The contents are deleted upon waking up, but you don't get that space back.
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post #6 of 7
Quote:
Originally Posted by 12Honk34 View Post

Thanks so much. My SSD is alway about 90% full and I don't even know what takes up all that space. Windows 7 by itself isn't that large. I have a lot of stuff on my dektop though. But besides that I have no clue what that space is needed for. I assume an almost full OS-drive can slow down the system?

 

No.  My 60 GB Mushkin Callisto Deluxe has 4.62 GB free right now and yet my system is still fast.

 

3 of the biggest offenders for consuming drive space are:

 

  • The Page File
  • The Hibernation File
  • System Restore

 

With 8 GB of memory, I recommend disabling both the Page File and Hibernation because this will free up about 16 GB of space.  I recommend disabling System Restore too, but I'll leave that up to you.

 

How to disable the Page File:

 

  1. Right-click My Computer and choose Properties.  Alternatively, just press Windows Key + Pause/Break.
  2. Click "Advanced system settings" on the left side
  3. Click the first "Settings..." button of the 3, which is under "Performance" (alternatively, just press Enter)
  4. Switch to the Advanced tab
  5. Click the "Change..." button
  6. Select "No paging file"
  7. Click "Set"
  8. Click "Yes" when you see this

 

 

How to disable Hibernation (do not look for and delete the Hibernation file instead):

 

 

  1. Open the Command Prompt as an Administrator.  The easiest way is, open the Start Menu, type cmd, right-click the search result "cmd.exe", and choose "Run as administrator"
  2. Type powercfg -h off and press Enter
  3. If nothing happens except you get a new line, then it was successful.  It will not give you a confirmation.

 

 

 

Quote:
Originally Posted by 12Honk34 View Post

The hibernation file is erased after each reboot or are they all stored somewhere? If it is erased I assume the space it uses is freed up after the reboot?

 

The Hibernation file is always taking up the same amount of space in order to keep that space reserved so that it's always guaranteed to work.

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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #7 of 7
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

[*] The Page File
[*] The Hibernation File
[*] System Restore


With 8 GB of memory, I recommend disabling both the Page File and Hibernation because this will free up about 16 GB of space. I recommend disabling System Restore too, but I'll leave that up to you.

How to disable the Page File:
  1. Right-click My Computer and choose Properties. Alternatively, just press Windows Key + Pause/Break.
  2. Click "Advanced system settings" on the left side
  3. Click the first "Settings..." button of the 3, which is under "Performance" (alternatively, just press Enter)
  4. Switch to the Advanced tab
  5. Click the "Change..." button
  6. Select "No paging file"
  7. Click "Set"
  8. Click "Yes" when you see this


How to disable Hibernation (do not look for and delete the Hibernation file instead):

  1. Open the Command Prompt as an Administrator. The easiest way is, open the Start Menu, type cmd, right-click the search result "cmd.exe", and choose "Run as administrator"
  2. Type powercfg -h off and press Enter
  3. If nothing happens except you get a new line, then it was successful. It will not give you a confirmation.

Did that. It freed up about 6-7 gb, thanks.
Burger with Fries
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Burger with Fries
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