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Should I just stop defraging? RAID 0 hates me...

post #1 of 8
Thread Starter 
For the second time in a few months, my RAID 0 setup has gone out of sync. I keep getting a popup in the system tray saying something along the lines of one of the ports being bad with a red icon representing the hard drive.

I can reproduce this by defragmenting it seems. Is it generally a good idea not to defrag a system in RAID 0? I've had two really bad experiences that act like hardware malfunction, causing me to reformat and start over. When I do start over, I re-initiate the drives in RAID 0 and everything seems to be working fine with no errors for a long time. But being an enthusiast, I like to have everything in working order so I do a defrag and it breaks my setup. :/

I'm using Defraggler btw. Any advice will be appreciated. For now, I'm not defragging any more. Thanks!
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TheZ
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post #2 of 8
I've defragged Raid 0 with 0 problems. Also, I have never read anywhere about it being bad to defrag Raid 0, but it's possible. I don't know. Applying general logic - defragging raid 0 should be identical to defragging single drive, if the drives are identical. If not - who knows how those files are spread in there..
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post #3 of 8
Try Auslogics Defrag.

I ran RAID0 with F1R 320gb drives from Samsung for a long time.
Recently switched to RAID1, didn't notice much besides slower sequential read/writes (like hashing for torrents).
post #4 of 8
Does the same issue occur if you just use the perfectly capable Windows defragger?
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post #5 of 8
I've run RAID 0 for years on all different controllers without any defrag probs.

One of your disks, cables or ports is probably bad.
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post #6 of 8
Thread Starter 
Quote:
Originally Posted by ronnin426850 View Post
I've defragged Raid 0 with 0 problems. Also, I have never read anywhere about it being bad to defrag Raid 0, but it's possible. I don't know. Applying general logic - defragging raid 0 should be identical to defragging single drive, if the drives are identical. If not - who knows how those files are spread in there..
You're right using basic logic, it should be doing the defrag across both drives. They're identical drives.
TheZ
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TheZ
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by MeQuerSat View Post
Try Auslogics Defrag.

I ran RAID0 with F1R 320gb drives from Samsung for a long time.
Recently switched to RAID1, didn't notice much besides slower sequential read/writes (like hashing for torrents).
I'll try that out. Thanks.


Quote:
Originally Posted by ronnin426850 View Post
Does the same issue occur if you just use the perfectly capable Windows defragger?
I haven't tried it with the Windows defragger or any other application besides Defraggler. :/


Quote:
Originally Posted by 2thAche View Post
I've run RAID 0 for years on all different controllers without any defrag probs.

One of your disks, cables or ports is probably bad.
But why would it work intermittently like that? For long periods. You could be right but I'm hoping you're not.
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TheZ
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post #8 of 8
Quote:
Originally Posted by Vbp6us View Post
But why would it work intermittently like that? For long periods. You could be right but I'm hoping you're not.
He's right.

The defrag is working the failing part hard enough that it intermittently fails.

Defragging RAID-0 is perfectly fine. But for you it's revealing a problem that you haven't dealt with.

So... you have to figure out if it's a cable, drive, or port. Probably the easiest way is to flip out of RAID mode, fire up a bootable Linux DVD, then dump the SMART data on each drive. Stuff like UDMA CRC Error indicates cable or port failure. Other errors may indicate drive failure. Once you've got the SMART data saved somewhere (or uploaded), reboot, flip back to RAID mode, then fire up your OS.
     
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