RAID dual 500 G drive only shows 450G capacit

October 8, 2010 at 18:36:08
Specs: Windows 7
I have a windows 7 system with a Serial ATA II RAID 0 with Dual 500GB Hard Drives. If I look at my hard drive on My Computer, the capacity is only shown as ~500G. Both disks do appear when looking at disk manager. I been told that this might be a problem with the BIOS settings and that I should back up the system and reset the BIOS to factory settings. Does this make sense and has anyone else seen this problem

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October 8, 2010 at 19:35:33
Are you certain you have it set up as RAID 0 ?
And why would you do this? You do realize that in a RAID 0 configuration if you have any problem with either disk you will lose all info off both disks.

With large drive capacities there is no valid reason to use a RAID 0 configuration. There is a perception that this will give greater speed but the difference is negligible and the risk of loss is magnified. If you need a single partition of 1TB capacity ( and why would you anyway) why not just buy a 1TB disk?

arranging the two 500mb drives in a mirrored array instead of spanned makes a lot more sense. Automatic redundant backup if ( when) a disk develops a problem.

Goin' Fishin' (Some day)

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October 8, 2010 at 21:55:01
I agree with Richard59.
RAID0 will improve performance in certain specific situations. Typical uses of Windows do not qualify. The minor performance improvement does not offset the problems inherent with RAID0. Using the drives separately will provide the same capacity with greater flexibility of use and without the problems

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