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

Forum Storage : Hard Disks - Is it possible? RAID 1 -> 0 with reinstalling?

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gilamran   04-18-2007 at 09:47:38 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

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Dahak   04-18-2007 at 10:07:00 AM
- 0 +

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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gse1   04-18-2007 at 10:29:02 AM
- 0 +

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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Flying-Q   04-18-2007 at 11:15:01 AM
- 0 +

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

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rammedstein   04-18-2007 at 01:05:54 PM
- 0 +

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.

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gilamran   04-18-2007 at 03:49:18 PM
- 0 +

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

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

Thanks
Gil

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