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Lost 30 GB after RAID 0 INSTALLATION?

Last response: in Storage
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March 16, 2012 11:12:19 PM

So apparently I installed my windows 7 on the raid 0 drives and then suddenly I noticed I lost 30 GB, is this normal and is there a solution to getting some of it back?

More about : lost raid installation

a b $ Windows 7
a c 154 G Storage
March 16, 2012 11:20:05 PM

Do you have 30 gigs of missing space as in 30 gigs too many files or did you actually loose 30 gigs like 100 gigs is now 70 gigs?

Windows tends to eat lots of space with system restore and shadow copies.

Depending on the settings in your raid setup, you can actually tell the controller to only use a certain amount of space(short stroke).
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March 17, 2012 12:19:02 AM

nukemaster said:
Do you have 30 gigs of missing space as in 30 gigs too many files or did you actually loose 30 gigs like 100 gigs is now 70 gigs?

Windows tends to eat lots of space with system restore and shadow copies.

Depending on the settings in your raid setup, you can actually tell the controller to only use a certain amount of space(short stroke).


I lost it as in 100-70
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a b $ Windows 7
a c 154 G Storage
March 17, 2012 4:34:09 AM

very strange.

What drives and how much does it show as.
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March 17, 2012 5:42:02 PM

nukemaster said:
very strange.

What drives and how much does it show as.


OCZ SOLID 3 60 GB each, about 118 GB.
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a b $ Windows 7
a c 154 G Storage
March 17, 2012 6:18:00 PM

With binary conversion, you should be looking at about 114.45 gigabytes of usable space.

How much does it show and what raid controller are you running?

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March 17, 2012 6:37:51 PM

nukemaster said:
With binary conversion, you should be looking at about 114.45 gigabytes of usable space.

How much does it show and what raid controller are you running?


I'm using the AMD SB950 controller

My motherboard is the Sabertooth 990FX
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a b $ Windows 7
a c 154 G Storage
March 17, 2012 6:39:31 PM

And it shows you how many gigabytes in windows?

What does disk management show you? Is it possible that it has been partitioned smaller then its full size?

Here is an example of a drive not partitioned to use all space. Also note that a 2TB drive becomes 1.81TB because drive makers use decimal numbers for gigabytes and computer are binary. so 60000000 bytes(what a drive makers calls 60gigs and can be divided by 1024 then that number divided by 1024 again to give you a binary value) = 57.220458985375 gigabytes.
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March 17, 2012 10:04:49 PM

nukemaster said:
And it shows you how many gigabytes in windows?

What does disk management show you? Is it possible that it has been partitioned smaller then its full size?

Here is an example of a drive not partitioned to use all space. Also note that a 2TB drive becomes 1.81TB because drive makers use decimal numbers for gigabytes and computer are binary. so 60000000 bytes(what a drive makers calls 60gigs and can be divided by 1024 then that number divided by 1024 again to give you a binary value) = 57.220458985375 gigabytes.
http://img51.imageshack.us/img51/9752/partitionv.png




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March 17, 2012 10:19:37 PM

Thats a normal amount for 2 60 gig drives it could be that one was near the end of its lifespan so it cut out a few gigs and the other drive had to match whatever that drive had left because its in a RAID 0.
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a b $ Windows 7
a c 154 G Storage
March 18, 2012 12:31:17 AM

You are out by less then 5 gigs from normal binary/decimal conversion.

It is possible that OCZ has more over provisioning on those drives(for instance most 60gig drives are in fact 64 gig drives with a 4 gig section over provisioned. This helps performance and allows the SSD extra blocks to use if some fail over the life of the drive).

I think you are good to go to be honest
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March 18, 2012 1:31:49 AM

nukemaster said:
You are out by less then 5 gigs from normal binary/decimal conversion.

It is possible that OCZ has more over provisioning on those drives(for instance most 60gig drives are in fact 64 gig drives with a 4 gig section over provisioned. This helps performance and allows the SSD extra blocks to use if some fail over the life of the drive).

I think you are good to go to be honest


30 GB gone is good to go??????? LOL
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March 18, 2012 1:50:31 AM

OP makes it sound like he lost the 30GB after installing windows... windows takes ~30GB of space before optimization, so instead of losing the space windows is taking it up?
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a b G Storage
March 18, 2012 1:52:46 AM

120GB (marketing) = 120,000,000,000 /1024/1024/1024 = approximately 111 GB
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a b $ Windows 7
a c 154 G Storage
March 18, 2012 7:02:52 AM

halodude23 said:
30 GB gone is good to go??????? LOL

I am not seeing 30 gigs missing(you show 109.9gigs to total space if you have 30 missing you would be showing like 90 or less).

If you mean you have 30 gigs less space as in files are taking too much. clear temp files/system restore points and run chkdsk.

EDIT and i did mess up some math 111 is right.
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March 18, 2012 10:56:06 AM

nukemaster said:
I am not seeing 30 gigs missing(you show 109.9gigs to total space if you have 30 missing you would be showing like 90 or less).

If you mean you have 30 gigs less space as in files are taking too much. clear temp files/system restore points and run chkdsk.

EDIT and i did mess up some math 111 is right.


I already cleared everything and used ccleaner. I don't really understand how windows takes 30 gigs since that didn't happen before.
http://answers.microsoft.com/en-us/windows/forum/window...

Right here it says about 15-20 GB max for 64 bit. hmmm, disabling hibernation returns about 10 gigs.
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a b $ Windows 7
a c 154 G Storage
March 18, 2012 4:23:22 PM

How much page file is allocated?

I have not used CCleaner for removing temp files. May be worth seeing what windows built in cleaner to remove system restore and shadow copies does for you.
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March 18, 2012 4:55:51 PM

nukemaster said:
How much page file is allocated?

I have not used CCleaner for removing temp files. May be worth seeing what windows built in cleaner to remove system restore and shadow copies does for you.

16337 mb
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March 18, 2012 6:50:23 PM

That would explain it, put your page file on a different drive if you want to have more space and have a greater SSD life because that page file eats through SSD's quick.
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a b $ Windows 7
a c 292 G Storage
March 19, 2012 8:13:56 PM

Page file, hibernate file. DO NOT RAID0 SSDs. You lose the TRIM command and performance degrades over time.

If you hadn't bought the hardware yet, I would recommend buying one 120 GB drive. http://www.xbitlabs.com/articles/storage/display/kigsto...

After the fact, I would recommend installing Win7 to one and using Disk Manager to expand Win7 onto the other. Or just carefully install Win7 on one and some large programs to the other.
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