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Is it possible? RAID 1 -> 0 with reinstalling?

Tags:
  • Hard Drives
  • NAS / RAID
  • Backup
  • Storage
Last response: in Storage
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April 18, 2007 7:47:38 AM

Hi,
I've installed windows (And eveything else) on RAID 1, and I didn't find it to be fast enough, so I want to move to RAID 0...

I have 320Gb. X 2 for the RAID, and another 200Gb. outside the RAID...
Can I make a GHost backup, move it to RAID 0, and loadup the backup to this disk(s)?

Thanks
Gil

More about : raid reinstalling

April 18, 2007 8:07:00 AM

Yes.That should be possible.You only really need raid 0.But why bother with raid???I know it is faster than just a single drive,but that only counts for sata version 1.SATA2 on thew other hand runs at 300 in stead of 150 and hence it should be faste enough for you.Goodluck.

Dahak

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April 18, 2007 8:29:02 AM

Dahak, I don't mean to be rude but what you've just said is basically tosh.

Those numbers you quoted are merely the maximum speeds of the SATA interface. A single drive setup will never saturate even 150GB/s so a RAID performance setup will always reap some kind of benefits.

Even old PATA drives gained from RAID performance setups and they were limited to up to 133GB/s.

The ghost backup route should be a sensible one, I've heard a lot of people mention this as being the best way to migrate across RAID settings. I don't have any experience with it myself, however, as I backup my data to a server-based filesystem so I don't have to do restores, so I'll leave someone with better knowledge to help you with that.
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a b G Storage
April 18, 2007 9:15:01 AM

Make sure you have an uptodate version of Ghost as the version I have (2003) won't migrate across RAIDs. It gets stuck recognising the volume properly during the write phase and leaves the drive(s) unbootable without then doing a full fdisk and rebuild.

Q
April 18, 2007 11:05:54 AM

yeah, just ghost your 320gb drives to the 200 or a spare (check the data) then delete the raid array, then build a new raid 0 on, then ghost it back, the controller should handle everything else.
April 18, 2007 1:49:18 PM

OK, great, I'll go with the GHost route...

Does anyone knows about preformance charts for with/without RAIDs?

Thanks
Gil
!