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raid 0 dosen't use the hole space

I_Reaper888
Level 7

‎08-17-2013 05:23 AM - last edited on ‎03-06-2024 08:04 PM by Community Admin

hi,
I wondered if its normal when I have a 1TB HDD and 2x 256GB SSD combined into a RAID 0 that it dosen't give me the hole storage capacity. ( Now it says it only has 700 GB instead of nearly 1500GB)
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Arne_Saknussemm
Level 40

‎08-17-2013 06:46 AM

Yes that is normal...the raid will work but will work only at the speed of the slowest disk and will be a multiple in size of the smallest...
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Praz
Level 13
In response to Arne_Saknussemm

‎08-17-2013 06:55 AM

This configuration makes no sense at all. RAID0 the SSDs and use the HDD as a non-member RAID drive.
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tzvia1
Level 8
In response to Praz

‎08-17-2013 07:27 AM

Praz wrote:
This configuration makes no sense at all. RAID0 the SSDs and use the HDD as a non-member RAID drive.


^^^ THIS. When you RAID 0, all the drives will be treated as equal space, so if you have 2x256, and 1x 1tb, the RAID sees it as 3x256, less formatting=700gig. Move your data to something else, as you will have to break the mirror. RAID the 2x256, and leave the 1TB out of the mirror.
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I_Reaper888
Level 7
In response to Arne_Saknussemm

‎08-17-2013 10:30 PM

So I should delete the Raid and only use the SSD to get the best performance?
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Arne_Saknussemm
Level 40

‎08-17-2013 10:50 PM

Yes, delete the raid....then create a RAID with the two SSDs plugged into the SATA 3 ports ....you can still have the HDD on the intel SATA 2 ports it will be treated as AHCI despite the controller being in RAID mode...i.e. it can still be on the controler but not be part of a RAID set up.

Use the SSDs for OS and your favourite progs and the HDD for storage....
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Masterbobo
Level 7

‎08-18-2013 11:15 AM

Exactly what the past 4 posts said. Do exactly that, raid the ssds ONLY, and use the hard drive as your secondary drive. I had to read it twice when you first posted it to see if you actually raided a hard drive with an ssd LOL
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Chris_Manico
Level 10

‎08-19-2013 12:35 AM

My 2x90 GB SSD are on ports 1/2 and my 2x1Tb WD drives are on 3/4, I top out at like almost 1.1 Gb/s on the ssds, and 300ish on the WD's, According to Atto anyway.
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HiVizMan
Level 40

‎08-19-2013 08:47 AM

Good advise from all here. It is always better to RAID the same size and type of hard drive.

A SSD is way quicker than a mechanical drive. So it is always best to only RAID ssd to ssd and mechanical with other mechanical drive.
To help us help you - please provide as much information about your system and the problem as possible.
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I_Reaper888
Level 7
In response to HiVizMan

‎08-19-2013 08:57 AM

I don't want to loose all my data do i just backup the raid?? And I don't know how many times my activations code are valid ( WIN 7 / Kaspersky / Office 2013)
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